INVERSE MULTIPLEXING FOR ATM IDT82V2604 Version - 2 December 8, 2003 2975 Stender Way, Santa Clara, California 95054 Telephone: (800) 345-7015 * * FAX: (408) 492-8674 Printed in U.S.A. (c) 2003 Integrated Device Technology, Inc. DISCLAIMER Integrated Device Technology, Inc. reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. IDT does not assume any responsibility for use of any circuitry described other than the circuitry embodied in an IDT product. The Company makes no representations that circuitry described herein is free from patent infringement or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent, patent rights or other rights, of Integrated Device Technology, Inc. LIFE SUPPORT POLICY Integrated Device Technology's products are not authorized for use as critical components in life support devices or systems unless a specific written agreement pertaining to such intended use is executed between the manufacturer and an officer of IDT. 1. Life support devices or systems are devices or systems which (a) are intended for surgical implant into the body or (b) support or sustain life and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any components of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. Table of Contents TABLE OF CONTENTS .......................................................................................................................................................... III LIST OF TABLES ...................................................................................................................................................................VI LIST OF FIGURES ................................................................................................................................................................VIII FEATURES .............................................................................................................................................................................. 1 APPLICATIONS....................................................................................................................................................................... 1 STANDARDS COMPLIANT .................................................................................................................................................... 1 DESCRIPTION......................................................................................................................................................................... 1 FUNCTIONAL BLOCK DIAGRAM .......................................................................................................................................... 2 1 PIN ASSIGNMENT .......................................................................................................................................................... 3 2 PIN DESCRIPTION ......................................................................................................................................................... 4 3 IDT82V2604 INTERFACE ............................................................................................................................................... 9 3.1 UTOPIA INTERFACE ......................................................................................................................................... 9 3.1.1 Utopia Loopback Function ..................................................................................................................... 9 3.2 LINE INTERFACE ............................................................................................................................................ 10 3.2.1 Line Interface Work Modes .................................................................................................................. 10 3.2.1.1 Mode0 .................................................................................................................................. 11 3.2.1.2 Mode1~Mode4 ..................................................................................................................... 11 3.2.1.3 Mode5~Mode6 ..................................................................................................................... 13 3.2.1.4 Mode7~Mode10 ................................................................................................................... 13 3.2.1.5 Mode11 ................................................................................................................................ 13 3.2.1.6 Mode12~Mode13 ................................................................................................................. 13 3.2.1.7 Mode14~Mode15 ................................................................................................................. 14 3.2.2 Line Interface Timing Clock Modes...................................................................................................... 14 3.2.3 Line Interface Loopback Function ........................................................................................................ 14 3.3 EXTERNAL MICROPROCESSOR INTERFACE ............................................................................................. 15 3.3.1 External Microprocessor Interface Selection........................................................................................ 15 3.3.2 Command FIFOs.................................................................................................................................. 15 3.3.3 Registers .............................................................................................................................................. 15 3.3.4 Register Map........................................................................................................................................ 15 3.3.5 Register Description............................................................................................................................. 16 3.3.6 Procedure of Loading Software and Sending Commands ................................................................... 18 3.4 SRAM INTERFACE .......................................................................................................................................... 20 4 IMA AND UNI FUNCTIONS .......................................................................................................................................... 21 4.1 IMA MODE ....................................................................................................................................................... 21 4.1.1 IMA Frame ........................................................................................................................................... 21 4.1.2 TRL (Timing Reference Link) ............................................................................................................... 21 4.1.3 Stuffing Mode ....................................................................................................................................... 21 Table of Contents III December 8, 2003 IDT82V2604 4.2 Inverse Multiplexing for ATM 4.1.4 Link Backup.......................................................................................................................................... 21 UNI MODE ....................................................................................................................................................... 21 5 PROGRAMMING INFORMATION FOR IMAOS04 ....................................................................................................... 22 5.1 COMMAND TYPES .......................................................................................................................................... 22 5.1.1 Command Message ............................................................................................................................. 22 5.1.2 Command Reply Message................................................................................................................... 22 5.1.3 Alarm Message .................................................................................................................................... 22 5.2 COMMAND ENCODING .................................................................................................................................. 23 5.3 COMMAND DESCRIPTION ............................................................................................................................. 24 6 IMA OPERATION .......................................................................................................................................................... 60 6.1 IMA INITIALIZATION ........................................................................................................................................ 60 6.2 CONFIGURE A GROUP .................................................................................................................................. 60 6.3 START UP A GROUP ...................................................................................................................................... 61 6.4 INHIBIT A GROUP/NOT INHIBIT A GROUP ................................................................................................... 61 6.5 ADD LINKS TO A GROUP THAT IS IN OPERATIONAL STATE .................................................................... 61 6.6 DELETE LINKS ................................................................................................................................................ 61 6.7 DEACTIVATE AND RECOVER LINKS ............................................................................................................ 61 6.8 RESTART A GROUP ....................................................................................................................................... 61 6.9 DELETE A GROUP .......................................................................................................................................... 61 7 PMON (PERFORMANCE MONITORING) .................................................................................................................... 62 8 IMAOS04_SLAVE ......................................................................................................................................................... 64 8.1 GROUP AUTO DETECT .................................................................................................................................. 64 8.1.1 Master Side .......................................................................................................................................... 64 8.1.2 Slave Side ............................................................................................................................................ 64 8.2 PROGRAMMING INFORMATION FOR IMAOS04_SLAVE ............................................................................ 64 8.2.1 Command types ................................................................................................................................... 64 8.2.2 Command Encoding............................................................................................................................. 64 8.2.3 Command Description.......................................................................................................................... 64 9 JTAG TEST ACCESS PORT ........................................................................................................................................ 71 9.1 TAP BUS SIGNALS ......................................................................................................................................... 71 9.2 INSTRUCTIONS .............................................................................................................................................. 71 10 PHYSICAL AND ELECTRICAL CHARACTERISTICS ............................................................................................... 72 10.1 ABSOLUTE MAXIMUM RATINGS ................................................................................................................... 72 10.2 D.C. CHARACTERISTICS ............................................................................................................................... 72 10.3 A.C. CHARACTERISTICS ............................................................................................................................... 73 10.3.1 Output Loading..................................................................................................................................... 73 10.3.2 System Clock and RST Signal Timing ................................................................................................. 73 10.3.3 Utopia Interface Timing ........................................................................................................................ 74 10.3.4 Line Interface Timing............................................................................................................................ 75 10.3.5 Microprocessor Interface Timing ......................................................................................................... 76 10.3.5.1 Interface with Motorola CPU (MPM =0) ............................................................................... 76 10.3.5.2 Interface with Intel CPU (MPM =1)....................................................................................... 78 Table of Contents IV December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3.6 SRAM Interface Timing ........................................................................................................................ 80 10.3.6.1 Write Cycle Specification...................................................................................................... 80 10.3.6.2 Read Cycle Specification ..................................................................................................... 81 GLOSSARY ........................................................................................................................................................................... 82 INDEX .................................................................................................................................................................................... 86 ORDERING INFORMATION.................................................................................................................................................. 89 Table of Contents V December 8, 2003 List of Tables Table-1 Table-2 Table-3 Table-4 Table-5 Table-6 Table-7 Table-8 Table-9 Table-10 Table-11 Table-12 Table-13 Table-14 Table-15 Table-16 Table-17 Table-18 Table-19 Table-20 Table-21 Table-22 Table-23 Table-24 Table-25 Table-26 Table-27 Table-28 Table-29 Table-30 Table-31 Table-32 Table-33 Table-34 Table-35 Table-36 Table-37 Table-38 Table-39 Table-40 Table-41 List of Tables Pin Description............................................................................................................................................... 4 Data Rates of Different Modes..................................................................................................................... 11 Pins Used in Multi-Rate Multiplex Mode ...................................................................................................... 13 Register Map................................................................................................................................................ 15 Input FIFO Data Length Register (INPUT_FIFO_LENGTH_REG) .............................................................. 16 Output FIFO Data Length Register (OUTPUT_FIFO_LENGTH_REG) ....................................................... 16 Output FIFO Data Register (OUTPUT_FIFO_DATA_REG) ........................................................................ 16 Input FIFO Data Register (INPUT_FIFO_DATA_REG) ............................................................................... 16 FIFO Interrupt Enable Register (FIFO_INT_ENABLE_REG) ...................................................................... 17 FIFO Interrupt Status Register (FIFO_STATE_REG).................................................................................. 17 FIFO Interrupt Reset Register (FIFO_INT_RESET_REG) .......................................................................... 17 Output FIFO Internal State Register (OUTPUT_FIFO_INTERNAL_STATE_REG)..................................... 18 Input FIFO Internal State Register (INPUT_FIFO_INTERNAL_STATE_REG) ........................................... 18 Maximum Delay Tolerance Value for Different SRAM Size in T1 Unchannelized Mode ............................. 20 Maximum Delay Tolerance Value for Different SRAM Size in E1 Unchannelized Mode............................. 20 Command Encoding .................................................................................................................................... 23 ConfigDev Command (Encoding: 01H)........................................................................................................ 24 ConfigUtopiaIF Command (Encoding: 03H) ................................................................................................ 26 ConfigLoopMode Command (Encoding: 04H) ............................................................................................. 27 ConfigGroupPara Command (Encoding: 05H) ............................................................................................ 28 ConfigGroupInterFace Command (Encoding: 06H)..................................................................................... 30 ConfigGroupWorkMode Command (Encoding: 07H)................................................................................... 31 ConfigGSMTimers Command (Encoding: 08H)........................................................................................... 32 ConfigTRLLink Command (Encoding: 09H)................................................................................................. 33 ConfigIFSMPara Command (Encoding: 0AH) ............................................................................................. 34 AddTxLink Command (Encoding: 0BH) ....................................................................................................... 35 AddRxLink Command (Encoding: 0CH) ...................................................................................................... 37 ConfigUNILink Command (Encoding: 0DH)................................................................................................. 38 StartGroup Command (Encoding: 0EH) ...................................................................................................... 39 StartLASR Command (Encoding: 0FH) ....................................................................................................... 40 InhibitGrp Command (Encoding: 10H)......................................................................................................... 41 NotInhibitGrp Command (Encoding: 11H) ................................................................................................... 42 RestartGrp Command (Encoding: 12H)....................................................................................................... 43 DeleteGrp Command (Encoding: 13H) ........................................................................................................ 44 RecoverLink Command (Encoding: 14H) .................................................................................................... 45 DeleteLink Command (Encoding: 15H) ....................................................................................................... 46 DeactLink Command (Encoding: 16H) ........................................................................................................ 47 GetGroupState Command (Encoding: 17H) ................................................................................................ 48 GetGroupDelayInfo Command (Encoding: 18H) ......................................................................................... 49 GetLinkState Command (Encoding: 19H).................................................................................................... 50 GetGrpPerf Command (Encoding: 1AH)...................................................................................................... 51 VI December 8, 2003 IDT82V2604 Table-42 Table-43 Table-44 Table-45 Table-46 Table-47 Table-48 Table-49 Table-50 Table-51 Table-52 Table-53 Table-54 Table-55 Table-56 Table-57 Table-58 Table-59 Table-60 Table-61 Table-62 Table-63 Table-64 Table-65 Table-66 Table-67 Table-68 Table-69 Table-70 List of Tables Inverse Multiplexing for ATM GetLinkPerf Command (Encoding: 1BH) ..................................................................................................... GetConfigPara Command (Encoding: 1CH) ................................................................................................ GetGrpWorkingPara Command (Encoding: 1DH) ....................................................................................... GetLinkWorkingPara Command (Encoding: 1EH)....................................................................................... StartTestPattern Command (Encoding: 1FH) .............................................................................................. GetLoopedTestPattern Command (Encoding: 20H) .................................................................................... StopTestPattern Command (Encoding: 21H) .............................................................................................. GetVersionInfo Command (Encoding: 22H) ................................................................................................ Parameters for IMA Group Configuration .................................................................................................... The PMON Parameters ............................................................................................................................... Definitions of Different ICP Cells.................................................................................................................. Failure/Alarm Signals................................................................................................................................... Command Encoding .................................................................................................................................... DeviceInitial Command (Encoding: 01H) ..................................................................................................... ConfigSlaveFrame Command (Encoding: 02H) .......................................................................................... ConfigUtopiaIF Command (Encoding: 03H) ................................................................................................ GetVersionInfo Command (Encoding: 22H) ................................................................................................ GroupInitial Command (Encoding: 23H) ...................................................................................................... Absolute Maximum Ratings ......................................................................................................................... D.C. Characteristics ..................................................................................................................................... System Clock and Reset Timing Parameters .............................................................................................. Utopia Interface Timing Parameters ............................................................................................................ Line Interface Timing Parameters................................................................................................................ Microprocessor Interface Timing Parameter for Motorola CPU Read Cycle ............................................... Microprocessor Interface Timing Parameters for Motorola CPU Write Cycle.............................................. Microprocessor Interface Timing Parameter for Intel CPU Read Cycle....................................................... Microprocessor Interface Timing Parameters for Intel CPU Write Cycle ..................................................... SRAM Interface Write Cycle Parameters..................................................................................................... SRAM Interface Read Cycle Parameters .................................................................................................... VII 52 54 55 56 57 58 59 59 60 62 62 63 64 65 67 68 69 70 72 72 73 74 75 76 77 78 79 80 81 December 8, 2003 List of Figures Figure-1 Figure-2 Figure-3 Figure-4 Figure-5 Figure-6 Figure-7 Figure-8 Figure-9 Figure-10 Figure-11 Figure-12 Figure-13 Figure-14 Figure-15 Figure-16 Figure-17 Figure-18 Figure-19 Figure-20 Figure-21 Figure-22 Figure-23 List of Figures Functional Diagram ........................................................................................................................................ 2 IDT82V2604 PBGA208 Package Pin Assignment ......................................................................................... 3 Utopia Loopback ............................................................................................................................................ 9 Line Interface Work Modes .......................................................................................................................... 10 G.802 Mapping Mode .................................................................................................................................. 12 Spaced Mapping Mode ................................................................................................................................ 12 Multiplexing Four 2 MHz Streams into One 8 MHz Stream ......................................................................... 13 Input FIFO Write Process ............................................................................................................................ 18 Output FIFO Read Process ......................................................................................................................... 19 Command Message Format ........................................................................................................................ 22 Command Reply Message Format .............................................................................................................. 22 Alarm Message Format ................................................................................................................................ 22 Reset Signal Timing Diagram ...................................................................................................................... 73 Tx Utopia Interface Timing Diagram ............................................................................................................ 74 Rx Utopia Interface Timing Diagram ............................................................................................................ 74 Line Interface Transmit Timing Diagram ...................................................................................................... 75 Line Interface Receive Timing Diagram ....................................................................................................... 75 Microprocessor Interface Timing Diagram for Motorola CPU Read Cycle ................................................... 76 Microprocessor Interface Timing Diagram for Motorola CPU Write Cycle ................................................... 77 Microprocessor Interface Timing Diagram for Intel CPU Read Cycle .......................................................... 78 Microprocessor Interface Timing Diagram for Intel CPU Write Cycle .......................................................... 79 SRAM Interface Timing Diagram for Write Cycle ......................................................................................... 80 SRAM Interface Timing Diagram for Read Cycle ........................................................................................ 81 VIII December 8, 2003 Inverse Multiplexing for ATM FEATURES ! ! IDT82V2604 - JTAG boundary scan meets IEEE 1149.1. - Package: 208 pin PBGA. - 3.3V operation / 5V tolerant input. Highlights - Provides API command set for convenient configuration and operation. An embedded controller and a downloaded software are used to interpret the commands. Functions can be added by software upgrading. - Supports IMA group auto detect. - Supports link backup so that a backup link can be automatically added when a previously configured link fails. - All the state machines are implemented in hardware. - Advanced cell buffer management algorithm to support ATM QoS requirements. Other Features - Accommodates up to 4 IMA logical groups. - Supports 4 T1/E1 channelized or unchannelized links. - Supports T1 ISDN links. - Supports MIXED mode: links not assigned to an IMA group can be used in UNI mode. - Supports symmetrical and asymmetrical operation. - Supports Common Transmit Clock (CTC) and Independent Transmit Clock (ITC) timing modes. - Provides 4 Utopia Level 2 8 bit cell level handshake MPHY interface to ATM device. - Supports maximum link delay tolerance of up to 212 ms for E1 or 281 ms for T1 (when 512 KB external memory is used). - Provides parameters for MIB (Management Information Base). - Supports dynamic addition/deletion of links to/from a working IMA group. - Supports line side clock detection. - Supports non-multiplexed Intel or Motorola microprocessor interface. - Loopback capability at both TDM and Utopia ports. - Supports MVIP. APPLICATIONS - DSLAM concentrator - 3G Wireless base station controller (NodeB) and Radio Network Controller (RNC) - Integrated Access Devices (IAD) STANDARDS COMPLIANT ! ! ! ! ATM-Forum - Utopia Level 2 Version 1.0, af-phy-0039.000, June 1995. - Inverse Multiplexing for ATM Specification version 1.1, af-phy0086.001, March 1999. - Backward compatible with Inverse Multiplexing for ATM Specification version 1.0, af-phy-0086.000, September 1994. - DS1 Physical Layer Specification, af-phy-0016.000, September 1994. - E1 Physical Interface Specification, af-phy-0064.000, September 1996. ITU-T - I.432 B-ISDN User Network Interface PHY specification. - G.804 ATM Cell Mapping into Plesiochronous Digital Hierarchy (PDH). - G.802 Inter-working between networks based on different digital hierarchies and speech encoding laws. - I.610 B-ISDN operation and maintenance principles and functions. ANSI - ANSI T1.646-1995, Broadband-ISDN-Physical Layer Specification for User-Network Interface Including DS1/ATM, 1995. MVIP DESCRIPTION nels) can be supported at the same time. To interface with most popular ATM layer chips in the market, IDT82V2604 supports Utopia layer 2 MPHY cell level handshake 8-bit bus interface. The 4-port IDT82V2604 is a feature-rich device that provides the solution to implement IMA and UNI logical channels over T1 or E1 links in all public or private UNI, NNI and B-ICI applications. The chip is compliant with the ATM Forum IMA specification v1.1 and backward compatible with IMA specification v1.0. Through a well-defined API command set, IMA function can be easily designed into various IMA systems and there is little necessity to access a large amount of registers. A downloaded software is used to interpret the command set and can be easily upgraded to meet specific requirement. In the chip architecture, up to 4 physically independent T1/E1 streams can be terminated through the utilization of most T1/E1 framers and LIUs in the market, and up to 4 logical IMA groups (i.e., 4 data chan- The IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. 1 2003 Integrated Device Technology, Inc. December 8, 2003 DSC-6245-2 IDT82V2604 Inverse Multiplexing for ATM FUNCTIONAL BLOCK DIAGRAM TC RST SYSCLK TSD[4:1] TSCK[4:1] TSF[4:1] Link Cell FIFO Tx Group Cell FIFOs Tx IMA Data Processor TxClk TxSOC TxEnb TxData[7:0] TxClav TxAddr[4:0] TSCFS TSCCK Line Interface IMA Protocol Processor PMON UTOPIA RxClk RxSOC RxEnb RxData[7:0] RxClav RxAddr[4:0] RSD[4:1] RSCK[4:1] MPM INT D[7:0] CS WR/RW RD/DS Control Interface A[7:0] EMD[7:0] TDO TCK TRST TDI TMS EM_CS External SRAM_IF JTAG EM_OE TC Rx Group Cell FIFOs Rx IMA Data Processor EM_WE RSCCK Link Cell FIFO EMA[18:0] RSF[4:1] RSCFS Figure-1 Functional Diagram FUNCTIONAL BLOCK DIAGRAM 2 December 8, 2003 IDT82V2604 1 Inverse Multiplexing for ATM PIN ASSIGNMENT 1 2 3 4 5 A GND IC IC EMD4 EMD0 B TMS TDI IC EMD5 C TRST TCK IC D NC TDO E RSCK1 F 10 11 EMA18 EMA15 EMA12 EMA11 EMA8 EMA5 EMA1 RxData2 RxData5 RxData7 EMD1 EM_OE EMA16 EMA13 EMA10 EMA7 EMA4 EMA0 RxData3 RxData6 RxSOC RxClav EMD6 EMD2 EM_CS EMA17 EMA14 EMA9 EMA6 EMA3 RxData0 RxData4 RxAddr4 RxAddr3 RxAddr2 C IC EMD7 EMD3 EM_WE GND VDD EMA2 RxData1 RxAddr1 RxAddr0 RxENB D RSD1 VDD SYSCLK RSCK2 RSD2 RSF1 VDD G RSCK3 RSD3 RSF2 VDD GND GND GND GND VDD H RSCK4 RSD4 RSF3 GND GND GND GND GND J RSF4 IC IC GND GND GND GND K IC IC IC VDD GND GND GND L IC IC IC M IC IC IC N IC P RSCFS RSCCK TSCCK TSCFS 6 7 VDD 8 9 GND 12 13 TxClav 14 15 16 GND RxCLK A B TxCLK TxAddr0 TxAddr1 E TxAddr2 TxAddr3 TxAddr4 TxSOC F TxENB TxData7 TxData6 G GND TxData5 TxData4 TxData3 H GND GND TxData0 TxData1 TxData2 J GND VDD IC IC IC K VDD CS IC IC IC L VDD A6 A7 RD/DS WR/RW M VDD VDD VDD VDD GND VDD IC IC IC IC TSF4 TSD4 TSD3 R VDD NC IC IC IC IC T GND VDD IC IC IC IC 1 2 3 4 5 6 GND TSCK2 TSCK1 TSCK4 TSCK3 7 VDD 8 VDD A1 A2 A3 A4 A5 N IC VDD D6 D7 MPM A0 P TSD2 TSD1 RST INT D2 D3 D4 D5 R TSF3 TSF2 TSF1 IC NC D0 D1 GND T 9 10 11 12 13 14 15 16 Figure-2 IDT82V2604 PBGA208 Package Pin Assignment (Top View) PIN Assignment 3 December 8, 2003 IDT82V2604 2 Inverse Multiplexing for ATM PIN DESCRIPTION Table-1 Pin Description Name Pin Number Input/Output Description Global Signals SYSCLK E4 I SYSCLK: System Clock System clock for the IDT82V2604. Default is 20 MHz. RST R11 I RST: System Reset System reset signal, low active. After reset, all registers are reset to default values, and both the contents in SRAM and the downloaded software are cleared. ATM Utopia Interface TxClk E14 I TxClk: Utopia Transmit Clock Utopia transmit clock used to transfer data from the ATM layer to the IDT82V2604. The frequency of the TxClk should be less than or equal to that of the system clock. Data is sampled on the rising edge of this signal. TxEnb G14 I TxEnb: Utopia Transmit Enable Utopia low active signal asserted by the ATM layer device during cycles when TxData contains valid cell data. The TxEnb input is sampled on the rising edge of TxClk. TxAddr4 TxAddr3 TxAddr2 TxAddr1 TxAddr0 F15 F14 F13 E16 E15 I TxAddr[4:0]: Utopia Transmit Address Utopia transmit port address driven from the ATM layer to poll and select an appropriate port. The TxAddr[4:0] input bus are sampled on the rising edge of TxClk. TxData7 TxData6 TxData5 TxData4 TxData3 TxData2 TxData1 TxData0 G15 G16 H14 H15 H16 J16 J15 J14 I TxData[7:0]: Utopia Transmit Data Utopia 8-bit data bus driven from the ATM layer to the IDT82V2604. The TxData[7:0] input bus are sampled on the rising edge of TxClk. TxClav E13 High-Z O TxClav: Utopia Transmit Cell Available Utopia transmit cell available signal from the IDT82V2604 to the ATM layer. A polled port drives TxClav only during each cycle following one with its address on the TxAddr lines. The polled port asserts TxClav high to indicate its corresponding FIFO can accept the transfer of a complete cell, otherwise it deasserts the signal. The TxClav output is updated on the rising edge of TxClk. Note: This pin requires a pull-down resistor. TxSOC F16 I TxSOC: Utopia Transmit Start of Cell Utopia start of cell signal. It will be driven high by the ATM layer when TxData[7:0] contain the first valid byte of a cell. The TxSOC input is sampled on the rising edge of TxClk. RxClk D16 I RxClk: Utopia Receive Clock Utopia receive clock. The frequency of RxClk should be less than or equal to the frequency of the system clock. Data is sampled on the rising edge of this signal. RxEnb D15 I RxEnb: Utopia Receive Enable When this pin is low, the received data will be transferred on RxData[7:0] in the following cycles. The RxEnb input is sampled on the rising edge of RxClk. PIN DESCRIPTION 4 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-1 Pin Description (Continued) Name Pin Number Input/Output Description RxAddr4 RxAddr3 RxAddr2 RxAddr1 RxAddr0 C14 C15 C16 D13 D14 I RxData7 RxData6 RxData5 RxData4 RxData3 RxData2 RxData1 RxData0 A15 B14 A14 C13 B13 A13 D12 C12 High-Z O RxData[7:0]: Utopia Receive Data Utopia 8-bit data bus driven from the IDT82V2604 to the ATM layer. The RxData[7:0] output bus are updated on the rising edge of RxClk. RxClav B16 High-Z O RxClav: Utopia Receive Cell Available Utopia cell available signal. A polled port drives RxClav only during each cycle following one with its address on the RxAddr lines. The polled port asserts RxClav high to indicate its corresponding FIFO has a complete cell available for transfer to the ATM layer, otherwise it deasserts the signal. The RxClav output is updated on the rising edge of RxClk. RxAddr[4:0]: Utopia Receive Address Utopia receive port address driven from the ATM layer to poll and select an appropriate port. The RxAddr[4:0] input bus are sampled on the rising edge of RxClk. Note: This pin requires a pull-down resistor. RxSOC B15 High-Z O RxSOC: Utopia Receive Start of Cell Utopia start of cell pulse. It will be driven high when RxData[7:0] contain the first valid byte of a cell. The RxSOC input is updated on the rising edge of RxClk. T1/E1 Line Interface TSD4 TSD3 TSD2 TSD1 R7 R8 R9 R10 O TSDn: Transmit Side Data Output TSDn contains the transmit data for the n-th link. The TSDn output is updated on the rising edge of TSCKn or TSCCK if common clock is used. TSCK4 TSCK3 TSCK2 TSCK1 T7 T8 P9 P10 I TSCKn: Transmit Side Clock TSCKn contains the transmit clock for the n-th link. TSF4 TSF3 TSF2 TSF1 P8 T9 T10 T11 I Note: If unused, TSCKn should be connected to ground. TSFn: Transmit Side Frame pulse TSFn is used to delineate each frame for the n-th link. The TSFn input is sampled on the falling edge of TSCKn or TSCCK if common clock is used. Note: If unused, TSFn should be connected to ground. TSCCK P1 I TSCCK: Transmit Side Common Clock TSCCK is the transmit clock for links that are configured in Common Clock Mode. Note: If unused, TSCCK should be connected to ground. TSCFS P2 I TSCFS: Transmit Side Common Frame Pulse This signal is used to delineate each frame for links that are configured in Common Clock Mode. The TSCFS input is sampled on the falling edge of TSCCK. Note: If unused, TSCFS should be connected to ground. PIN DESCRIPTION 5 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-1 Pin Description (Continued) Name Pin Number Input/Output RSD4 RSD3 RSD2 RSD1 H2 G2 F2 E2 I Description RSDn: Receive Side Data Input RSDn contains the receive data for the n-th link. The RSDn input is sampled on the falling edge of RSCKn or RSCCK if common clock is used. Note: If unused, RSDn should be connected to ground. RSCK4 RSCK3 RSCK2 RSCK1 H1 G1 F1 E1 I RSF4 RSF3 RSF2 RSF1 J1 H3 G3 F3 I RSCKn: Receive Side Clock RSCKn contains the recovered line clock for the n-th link. Note: If unused, RSCKn should be connected to ground. RSFn: Receive Side Frame Pulse RSFn is used to delineate each frame for the n-th link. The RSFn input is sampled on the falling edge of RSCKn or RSCCK if common clock is used. Note: If unused, RSFn should be connected to ground. RSCCK N3 I RSCCK: Receive Side Common Clock RSCCK is the receive clock for links that are configured in Common Clock Mode. Note: If unused, RSCCK should be connected to ground. RSCFS N2 I RSCFS: Receive Side Common Frame Pulse RSCFS is used to delineate each frame for links that are configured in Common Clock Mode. The RSCFS input is sampled on the falling edge of RSCCK. Note: if unused, RSCFS should be connected to ground. Microprocessor Interface MPM P15 I MPM: Microprocessor Interface Mode Connected to VDD for Intel; connected to GND for Motorola. RD/DS M15 I RD: Read Operation In parallel Intel microprocessor interface mode, this pin is asserted low by the microprocessor to initiate a read cycle. Data is output to D[7:0] from the device. DS: Data Strobe In parallel Motorola microprocessor interface mode, this pin is the data strobe of the parallel interface. During a write operation (RW=0), data on D[7:0] is sampled into the device. During a read operation (RW=1), data is output to D[7:0] from the device. WR/RW M16 I WR: Write Operation In parallel Intel microprocessor interface mode, this pin is asserted low by the microprocessor to initiate a write cycle. Data on D[7:0] is sampled into the device during a write operation. RW: Read/Write Select In parallel Motorola microprocessor interface mode, this pin is asserted low for write operation and high for read operation. D7 D6 D5 D4 D3 D2 D1 D0 PIN DESCRIPTION P14 P13 R16 R15 R14 R13 T15 T14 I/O D[7:0]: Data Bus These pins function as a bi-directional data bus of the microprocessor interface. 6 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-1 Pin Description (Continued) Name Pin Number Input/Output Description A7 A6 A5 A4 A3 A2 A1 A0 M14 M13 N16 N15 N14 N13 N12 P16 I A[7:0]: Address Bus These pins function as an address bus of the microprocessor interface. CS L13 I CS: Chip Select For each read or write operation, this pin must be changed from high to low, and remains low until the operation is over. INT R12 Open_drain INT: Interrupt Request A low level on this pin indicates that an interrupt is pending inside the chip. SRAM Interface EMD7 EMD6 EMD5 EMD4 EMD3 EMD2 EMD1 EMD0 D4 C4 B4 A4 D5 C5 B5 A5 I/O EMD[7:0]: Data Bus Data Input/Output pins for the external SRAM. Used for data exchange between the IDT82V2604 and the external SRAM. EMA18 EMA17 EMA16 EMA15 EMA14 EMA13 EMA12 EMA11 EMA10 EMA9 EMA8 EMA7 EMA6 EMA5 EMA4 EMA3 EMA2 EMA1 EMA0 A6 C7 B7 A7 C8 B8 A8 A9 B9 C9 A10 B10 C10 A11 B11 C11 D11 A12 B12 O EMA[18:0]: Address Bus Address of the external SRAM. Used to select a data entry in the external SRAM. EM_WE D6 O EM_WE: Write Enable Write enable signal for the external SRAM. When EM_WE pin and EM_CS pin are both low, data can be written to the external SRAM. EM_OE B6 O EM_OE: Output Enable Output enable signal for the external SRAM. When EM_OE pin and EM_CS pin are both low, data can be read from the external SRAM. EM_CS C6 O EM_CS: Chip Select Chip enable signal for the external SRAM. PIN DESCRIPTION 7 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-1 Pin Description (Continued) Name Pin Number Input/Output Description JTAG & Scan Interface TCK C2 I TCK: JTAG Test Clock This pin is the input clock for JTAG. TMS B1 I TMS: JTAG Test Mode Select This pin has an internal pull-up resistor. TDI B2 I TDI: JTAG Test Data Input This pin is used to load instructions and data into the test logic and has an internal pull-up resistor. TDO D2 High-Z TRST C1 I TDO: JTAG Test Data Output This is normally high impedance and is used to read all the serial configuration and test data from the test logic. TRST: JTAG Test Port Reset This pin has an internal pull-up resistor. Power Supplies and Grounds VDD D7,D10,E3,F4,G4,G13, K4,K13,L4,M4,N4,N5, N6,N7,N10,N11,P3, P12,R1,T2 - 3.3V Power Supply GND A1,A16,D8,D9,G7,G8, G9,G10,H4,H7,H8,H9, H10,H13,J4,J7,J8,J9, J10,J13,K7,K8,K9, K10,N8,N9,T1,T16 - Ground Others IC L16 - IC: Internal Connected Internal use. For normal operation, these pins should be connected to VDD. IC A2,A3,B3,C3,D3,J2, J3,K1,K2,K3,L1,L2,L3, L15,M1,M2,M3,N1,P4, P5,P6,P7,P11,T3,T4, T5,T6,T12 - IC: Internal Connected Internal use. For normal operation, these pins should be connected to ground. IC K14,K15,K16,L14,R3, R4,R5,R6 - IC: Internal Connected Internal use. For normal operation, these pins should be left open. NC D1,R2,T13 - NC: No Connection PIN DESCRIPTION 8 December 8, 2003 IDT82V2604 3 IDT82V2604 INTERFACE 3.1 UTOPIA INTERFACE Inverse Multiplexing for ATM 3.1.1 UTOPIA LOOPBACK FUNCTION For diagnostic purpose, the capability to loop back all Utopia traffic to Utopia bus is provided. This loopback is called Utopia loopback and can be enabled by ConfigLoopMode command. In this mode, cells are taken from TGCFs (Transmit Group Cell FIFO) and sent to the respective RGCFs (Receive Group Cell FIFO). When in Utopia loopback mode, cells will not be transmitted to the line interface. Refer to Figure-3. The Utopia interface operates in level 2 mode. The IDT82V2604 supports up to 4 Utopia level 2 ports. Each port is assigned an address ranging from 0 to 30. The address value of 31 is reserved and should not be used. All the 31 ports can be individually enabled or disabled by ConfigUtopiaIF command. Each IMA group or UNI link corresponds to a port. For each IMA group, the port address can be assigned by ConfigGroupInterface command. For each UNI link, the port address can be assigned by ConfigUNILink command. Inside the device, each port corresponds to a GCF (Group Cell FIFO) which is 2 cells deep. UTOPIA Interface Tx Group Cell FIFO 0 The IDT82V2604 uses cell level handshake for cell transfer. One entire cell is transferred before another port can be selected. The start of a cell is marked by TxSOC and RxSOC signals in the transmit and the receive directions. These two signals are active during the first byte of a cell. Tx Group Cell FIFO 1 ...... Rx Group Cell FIFO 1 Rx Group Cell FIFO 0 Figure-3 Utopia Loopback IDT82V2604 INTERFACE 9 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 3.2 LINE INTERFACE 3.2.1 LINE INTERFACE WORK MODES In channelized mode, all the framing bits and signalling bits are set to zero in transmit direction. And all the received signalling bits and framing bits are discarded in receive direction. In unchannelized mode, all bits are utilized for data transfer. For different framers, the line interface can be configured to different Work Mode to adapt to different data format. Figure-4 shows all the 16 Work Modes and Table-2 lists IMA layer data rate for each mode. The Work Mode is selected by AddTxLink or AddRxLink command when the link is in an IMA group. The Work Mode is selected by ConfigUNILink command when a link is used as a UNI link. IMA to Framer Interface rate Data rate Mode name 1.5Mb/s Unchannelized Mode0 ISDN mode Normal mode ISDN Spaced mode mapping Normal mode G.802 mapping 2Mb/s T1 nonmulti-rate Mode1 Mode2 Mode3 Mode4 ISDN mode Mode5 Normal mode Mode6 1.5Mb/s Channelized Interface Mode multi-rate T1 map to E1 Unchannelized 2Mb/s nonmulti-rate E1 8Mb/s four channel ISDN G.802 mode mapping Normal mode ISDN Spaced mode mapping Normal mode Mode7 Mode8 Mode9 Mode10 Mode11 Signalling mode Mode12 Normal mode Mode13 Signalling mode Mode14 Normal mode Mode15 2Mb/s Channelized multi-rate 8Mb/s Figure-4 Line Interface Work Modes IDT82V2604 INTERFACE 10 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-2 Data Rates of Different Modes Mode IMA Data Rate Per Channel (Maximum) Interface Clock (Maximum) Mode0 1.544 Mb/s 1.544 MHz Mode1 1.472 Mb/s 2.048 MHz Mode2 1.536 Mb/s 2.048 MHz Mode3 1.472 Mb/s 2.048 MHz Mode4 1.536 Mb/s 2.048 MHz Mode5 1.472 Mb/s 1.544 MHz Mode6 1.536 Mb/s 1.544 MHz Mode7 1.472 Mb/s 8.192 MHz Mode8 1.536 Mb/s 8.192 MHz Mode9 1.472 Mb/s 8.192 MHz Mode10 1.536 Mb/s 8.192 MHz Mode11 2.048 Mb/s 2.048 MHz Mode12 1.920 Mb/s 2.048 MHz Mode13 1.984 Mb/s 2.048 MHz Mode14 1.920 Mb/s 8.192 MHz Mode15 1.984 Mb/s 8.192 MHz Each mapping mode can be further divided into two data modes: T1 ISDN mode and T1 normal mode. The mapping is done in a frame-byframe fashion and the unassigned time slots are set to zero. 3.2.1.1 Mode0 In this mode, the transmit and receive data are viewed as a continuous 1.544Mb/s serial stream. There is no concept of time slot in an unchannelized link. Each eight bits are grouped into an octet with arbitrary alignment. The first bit received/transmitted is the most significant bit of an octet while the last bit is the least significant bit. The 1.544 MHz data stream clock is provided by the system. In these modes, the clock for Tx and Rx can be either common clock or independent clock. If common clock is used, TSCCK and RSCCK are used as Tx clock and Rx clock respectively, and TSCFS and RSCFS are used as common frame pulse in Tx and Rx directions respectively. If independent clock is used, TSCK[i] and RSCK[i] are used as Tx clock and Rx clock respectively, and TSF[i] and RSF[i] are used as the frame pulse in Tx and Rx directions respectively. The 1.544 MHz clock in Tx and Rx directions can be either common clock or independent clock. If common clock is used, TSCCK and RSCCK are used as Tx clock and Rx clock respectively, and TSCFS and RSCFS are used as common frame pulse in Tx and Rx directions respectively. If independent clock is used, TSCK[i] and RSCK[i] are used as Tx clock and Rx clock respectively, and TSF[i] and RSF[i] are used as the frame pulse in Tx and Rx directions respectively. G.802 Mapping This mode supports ITU-T Recommendation G.802, which describes how 24 (or 23, in signalling mode) T1 time slots and one framing bit (totally 193/185 bits per T1/T1-ISDN frame) are mapped to 32 E1 time slots (256 bits). This mapping is done by mapping the 24 (or 23 in T1ISDN mode) T1 time slots to TS1~TS15 and TS17~TS25 (or TS17~TS24), and mapping the framing bit to bit 1 of TS26/TS25. TS0, TS16, TS27/TS26 through TS31 are all unassigned and set to zero (refer to Figure-5). 3.2.1.2 Mode1~Mode4 In these four modes, the transmit/receive data rate is T1 channelized while the line interface timing clock is 2.048 MHz (E1 clock). Thus the mapping between T1 frame and E1 frame is needed. Two mapping modes can be used: G.802 mapping mode and spaced mapping mode. IDT82V2604 INTERFACE 11 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Frame A 1.5M T1 stream FA 1 2 14 15 16 17 18 u 2M E1 stream Frame B 23 24 FB u 0 1 2 14 15 16 17 18 E1 Framing time slot E1 signalling time slot 1 2 u u 23 24 FC u 24 25 26 27 28 FB X X X X X X u u 31 0 1 1 2 2 X 1. X=unused bit 2. u=unassigned time slot 3. FA, FB and FC are T1 framing bits for frame A, B and C respectively. Figure-5 G.802 Mapping Mode int(n) is the largest integer no greater than n. The framing bit is assigned to the first bit of TS0. This distribution of unassigned time slots averages out the idle time slots and optimizes the framer's slip buffer's usage. Spaced Mapping In this mode, T1 to E1 mapping makes every fourth time slot unassigned (i.e., 4, 8, 12, 16, 20, 24 and 28). Refer to Figure-6. Suppose T1 time slot x is mapped to E1 time slot y. We have y=x+int((x-1)/3), where Frame A 1.5M T1 Stream FA 1 2 3 4 5 6 7 Frame B 8 0 FA 1 X X 2 X 3 X 4 X 22 23 24 FB u u 2M Stream 9 5 X 6 7 8 1 2 23 24 FC 1 2 u 9 27 28 29 30 31 FB X X X 0 X 1 X 2 X 31 X X 1. X=unused bits 2. u=unassigned time slot 3. FA, FB and FC are T1 framing bits for frame A, B and C respectively. 4. Mapping rule: If T1 time slot x is mapped to E1 time slot y, y = x+int(x/3). Here int(n) is the largest integer no greater than n. Figure-6 Spaced Mapping Mode IDT82V2604 INTERFACE 12 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM T1 ISDN Mode The T1 ISDN mode corresponds to the use of 23 time slots to transmit data, that is, T1 data is not transmitted during the framing bit and time slot 24. Therefore, only 23 time slots are considered useful and are mapped while time slot 24 and the framing bit are meaningless and are not mapped. 1st 2Mbps stream Byte0 Byte1 Byte2 2nd 2Mbps stream Byte0 Byte1 Byte2 3rd 2Mbps stream Byte0 Byte1 Byte2 Byte0 4th 2Mbps stream 8Mbps stream T1 Normal Mode 0 1 2 Byte1 3 4 5 6 Byte2 7 8 9 10 11 In this mode, the data is not transmitted during the framing bit while all the other 24 time slots are used. Figure-7 Multiplexing Four 2 MHz Streams into One 8 MHz Stream 3.2.1.3 Mode5~Mode6 T1 Multi-Rate Mode In these modes, the transmit/receive data rate is T1 channelized, and the line interface timing clock is 1.544 MHz (T1 clock). The ISDN mode and normal mode are defined in T1 ISDN Mode and T1 Normal Mode on page 13. Since there are two T1 to E1 mapping methods that can be used as described in G.802 Mapping and Spaced Mapping on page 11, two new modes can be derived when multiplexing is further used. Again, T1 ISDN data mode and T1 normal mode can be applied, thus we have 4 more modes: mode7~mode10. In these modes, the clock for Tx and Rx can be either common clock or independent clock. If common clock is used, TSCCK and RSCCK are used as Tx clock and Rx clock respectively, and TSCFS and RSCFS are used as common frame pulse in Tx and Rx directions respectively. If independent clock is used, TSCK[i] and RSCK[i] are used as Tx clock and Rx clock respectively, and TSF[i] and RSF[i] are used as the frame pulse in Tx and Rx directions respectively. 3.2.1.5 Mode11 In this mode, the transmit and receive data are viewed as a continuous 2.048Mb/s serial stream. There is no concept of time slot in an unchannelized link. Each eight bits are grouped into an octet. Whether it is in byte alignment or not is dependent on the TSF or TSCFS signal. The first bit received/transmitted is the most significant bit of an octet while the last bit is the least significant bit. The 2.048 MHz data stream clock is provided by the system. 3.2.1.4 Mode7~Mode10 In these modes, only TSCCK and RSCCK are used to input the 8.192 MHz clock in Tx and Rx directions respectively, and TSCFS and RSCFS are used as common frame pulse in Tx and Rx directions respectively. All the TSCK[i], TSF[i], RSCK[i] and RSF[i] pins are not used and should be connected to ground. The unused RSD pins should also be connected to ground. In this mode, the clock for Tx and Rx can be either common clock or independent clock. If common clock is used, TSCCK and RSCCK are used as Tx clock and Rx clock respectively. If independent clock is used, the clock for the i-th link comes from TSCK[i] and RSCK[i] in Tx and Rx directions respectively. The data pins used for multiplexing are shown in the table below: In Common Clock Mode, the TSCFS signal is used for byte alignment pulse for the transmitted bit stream while in Independent Clock Mode, the TSF[i] signal is used for byte alignment pulse for the i-th transmit link. Table-3 Pins Used in Multi-Rate Multiplex Mode Tx Pin Name Rx Pin Name Multiplexed Channel TSD[1] RSD[1] channel 1~channel 4 The frequency for TSF[i] (or TSCSF) is the result of TSCK[i] (or TSCCK) divided by 256 and the pulse width of this signal is one cycle of TSCK[i] or TSCCK signal. Multi-rate 3.2.1.6 Mode12~Mode13 Multi-rate is used for multiplexing four E1 streams into one highspeed stream. Figure-7 shows four 2.048 MHz E1 streams multiplexed into a single 8.192 MHz stream through one data pin. The multiplexing uses the round-robin technology. The system provides 8.192 MHz common clock and 8KHz common frame pulse. These two modes are E1 non-multi-rate combined with different signalling modes. The non-multi-rate is the channelized generic E1 interface, i.e., a 2.048 MHz channel is divided into 32 sub-channels (also called time slots), and these sub-channels are used to exchange data. In these modes, the clock for Tx and Rx can be either common clock or independent clock. If common clock is used, TSCCK and RSCCK are used as Tx clock and Rx clock respectively, and TSCFS and RSCFS are used as common frame pulse in Tx and Rx directions respectively. If independent clock is used, TSCK[i] and RSCK[i] are used as Tx clock and Rx clock respectively, and TSF[i] and RSF[i] are used as the frame pulse in Tx and Rx directions respectively. For T1 channel, before multiplexing, a mapping from each T1 frame to E1 frame is first done. Then the mapped 4 E1 channels are multiplexed into one 8.192 MHz stream as Figure-7 shows. IDT82V2604 INTERFACE 13 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM command and AddRxLink command can be used to configure the clock mode in the transmit and receive directions respectively. In UNI mode, ConfigUNILink command can be used to configure the clock mode. Channelized Non-Multi-Rate E1 In this mode, the system provides 2.048 MHz clock and 8KHz frame pulse for E1 bit stream exchange between the IDT82V2604 and the line interface. The E1 time slot 0 is not used for data exchange while time slot 16 may or may not be used for data exchange, depending on Signalling or Non-Signalling mode. If a link is configured in Common Clock Mode, TSCCK and RSCCK are used as Tx clock and Rx clock respectively, and TSCFS and RSCFS are used as common frame pulse in Tx and Rx directions respectively. Signalling and Non-Signalling If a link is configured in Independent Clock Mode, TSCK[i] and RSCK[i] are used as Tx clock and Rx clock respectively, and TSF[i] and RSF[i] are used as the frame pulse in Tx and Rx directions respectively. In signalling mode, time slot 0 and time slot 16 are not used for data exchange between the IDT82V2604 and the line interface. In nonsignalling mode, only time slot 0 is not used for data exchange. These two timing clock modes can be configured at the same time, i.e., some links can work in Common Clock Mode while other links can work in Independent Clock Mode. 3.2.1.7 Mode14~Mode15 The multi-rate concept is defined in Multi-rate on page 13, and the signalling and non-signalling concepts are defined in Signalling and Non-Signalling on page 14. The system provides 8.192 MHz common clock and 8KHz common frame pulse. The line interface mode7~mode10 and mode14~mode15 cannot be used in Independent Clock Mode. 3.2.3 In these modes, only the TSCCK and RSCCK pins are used to input the 8.192 MHz clock in Tx and Rx directions respectively, and TSCFS and RSCFS are used as common frame pulse in Tx and Rx directions respectively. The TSCK[i], TSF[i], RSCK[i] and RSF[i] pins are not used and should be connected to ground. The unused RSD pins should also be connected to ground. The line interface supports two line loopback functions, one is external loopback mode and the other is internal loopback mode. The two loopback modes can be selected by ConfigLoopMode command. In external loopback mode, all the data received at the line side is looped back to the transmit side and is transmitted out. When this function is enabled, all the links will be in external loopback mode. Data will not be transmitted to the Utopia interface. The data pins used for multiplexing are shown in Table-3. 3.2.2 LINE INTERFACE TIMING CLOCK MODES In internal loopback mode, the data transmitted are also sent to the receive side. When this function is enabled, all the links will be in internal loopback mode. Data will not be transmitted to the FE Utopia interface. Two timing clock modes can be selected. One is Common Clock Mode, the other is Independent Clock Mode. The timing clock mode can be individually configured for each link. In IMA mode, AddTxLink IDT82V2604 INTERFACE LINE INTERFACE LOOPBACK FUNCTION 14 December 8, 2003 IDT82V2604 3.3 Inverse Multiplexing for ATM EXTERNAL MICROPROCESSOR INTERFACE 3.3.2 The embedded controller uses two FIFOs to communicate with the external microprocessor. One is Input FIFO, which is used to receive commands and data from the external microprocessor; the other is Output FIFO, which is used to send data to the external microprocessor. The lengths of these two FIFOs are both 16 bytes. These two FIFOs can only be accessed through registers. The IDT82V2604 uses an embedded controller and a downloaded software (IMAOS04 or IMAOS04_Slave1) to communicate with the external microprocessor. The external microprocessor sends commands to configure the device and read feedbacks. The downloaded software interprets these commands and the embedded controller executes these commands. This relieves programmers from accessing vast registers. Just by accessing a few registers, programmers can use a set of well-defined commands to communicate with IDT82V2604. 3.3.1 COMMAND FIFOS 3.3.3 REGISTERS The IDT82V2604 provides 9 registers for the external microprocessor to load software to the device, send commands and read feedbacks. EXTERNAL MICROPROCESSOR INTERFACE SELECTION The IDT82V2604 supports both non-multiplexed Intel and non-multiplexed Motorola microprocessor interfaces. For Intel microprocessor interface, the MPM pin should be connected to VDD; for Motorola microprocessor interface, the MPM pin should be connected to ground. 3.3.4 REGISTER MAP 1. IMAOS04 is used when the device is in normal communication while IMAOS04_Slave is used when the device operates in Slave Mode. Refer to 8.1 Group Auto Detect. Table-4 Register Map Map Address (Hex) Register 00 INPUT_FIFO_LENGTH_REG 01 R/W b7 b6 b5 R/W - - - Input_Message_Length[4:0] OUTPUT_FIFO_LENGTH_R EG R - - - Output_Message_Length[4:0] 02 OUTPUT_FIFO_DATA_REG R Output_Data[7:0] 03 INPUT_FIFO_DATA_REG R/W Input_Data[7:0] 04 FIFO_INT_ENABLE_REG R/W - - - - - Input_FIFO_ empty_int_en Input_FIFO_ov erflow_int_en Output_FIFO_msg _available_int_en 05 FIFO_STATE_REG R - - - - - Input_FIFO_ empty_state Input_FIFO_ov erflow_state Output_FIFO_msg _available_state 06 FIFO_INT_RESET_REG W - - - - - Input_FIFO_ empty_int_rst Input_FIFO_ov erflow_int_rst Output_FIFO_msg _available_int_rst 07 OUTPUT_FIFO_INTERNAL_ STATE_REG R - - - Output_remain_msg_length[4:0] 08 INPUT_FIFO_INTERNAL_ST ATE_REG R - - - Input_remain_msg_length[4:0] IDT82V2604 INTERFACE 15 b4 b3 b2 b1 b0 December 8, 2003 IDT82V2604 3.3.5 Inverse Multiplexing for ATM REGISTER DESCRIPTION Table-5 Input FIFO Data Length Register (INPUT_FIFO_LENGTH_REG) (R/W, Address=00H) Symbol Position Default Description - 7-5 0 Reserved. Input_Message_Length[4:0] 4-0 0 These 5 bits contain the message length in the Input FIFO which should be written after the message is sent to the Input FIFO. The valid length is from 0 to 16 bytes. Table-6 Output FIFO Data Length Register (OUTPUT_FIFO_LENGTH_REG) (R, Address=01H) Symbol Position Default Description - 7-5 0 Reserved. Output_Message_Length[4:0] 4-0 0 These 5 bits contain the length of the message in the Output FIFO. Valid length is from 0 to 16 bytes. Table-7 Output FIFO Data Register (OUTPUT_FIFO_DATA_REG) (R, Address=02H) Symbol Position Default Description Output_Data[7:0] 7-0 0 These bits contain the data from the message Output FIFO. The complete message can be retrieved by continuously reading this register. Table-8 Input FIFO Data Register (INPUT_FIFO_DATA_REG) (R/W, Address=03H) Symbol Position Default Description Input_Data[7:0] 7-0 0 These bits contain data to be sent to the Input FIFO. By continuously writing to this register, a complete message can be sent. Before the message is sent, the Input_FIFO_empty_state bit in the EP_interrupt status register should be polled to see whether the Input FIFO is available for writing. After the message is sent, the message length should be written to the EP_Tx_length register. IDT82V2604 INTERFACE 16 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-9 FIFO Interrupt Enable Register (FIFO_INT_ENABLE_REG) (R/W, Address=04H) Symbol Position Default Description - 7-3 0 Reserved. Input_FIFO_empty_int_en 2 0 Input FIFO empty interrupt enable 0: Interrupt disabled 1: Interrupt enabled Input_FIFO_overflow_int_en 1 0 Input FIFO overflow interrupt enable 0: Interrupt disabled 1: Interrupt enabled Output_FIFO_msg_available_int_en 0 0 Output FIFO message available interrupt enable 0: Interrupt disabled 1: Interrupt enabled Table-10 FIFO Interrupt Status Register (FIFO_STATE_REG) (R, Address=05H) 1. Symbol Position Default Description - 7-3 0 Reserved. Input_FIFO_empty_state(1) 2 0 Input FIFO availability status 0: Input FIFO is not available for writing. 1: Input FIFO is available for writing. Input_FIFO_overflow_state 1 0 Input FIFO overflow status 0: Input FIFO is not full. 1: Input FIFO is full. Output_FIFO_msg_available_state 0 0 Output FIFO message availability status 0: No message is in the Output FIFO. 1: A message is in the Output FIFO. For the first time a message is to be sent, this bit is a Don't Care. Table-11 FIFO Interrupt Reset Register (FIFO_INT_RESET_REG) (W, Address=06H) Symbol Position Default - 7-3 0 Reserved. Input_FIFO_empty_int_rst 2 0 Write `1' to clear the Input_FIFO_empty_state status. Input_FIFO_overflow_int_rst 1 0 Write `1' to clear the Input_FIFO_overflow_state status. Output_FIFO_msg_available_int_rst 0 0 Write `1' to clear the Output_FIFO_msg_available_state status. IDT82V2604 INTERFACE Description 17 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-12 Output FIFO Internal State Register (OUTPUT_FIFO_INTERNAL_STATE_REG) (R, Address=07H) Symbol Position Default Description - 7-5 0 Reserved. Output_remain_msg_length[4:0] 4-0 0 The length of the message remaining in the Output FIFO to be read by the external microprocessor. Table-13 Input FIFO Internal State Register (INPUT_FIFO_INTERNAL_STATE_REG) (R, Address=08H) Symbol Position Default Description - 7-5 0 Reserved. Input_remain_msg_length[4:0] 4-0 0 The length of the message remaining in the Input FIFO to be processed by the IDT82V2604. is the same with that of sending the commands. Figure-8 shows the Input-FIFO write process and Figure-9 shows the Output-FIFO read process. 3.3.6 PROCEDURE OF LOADING SOFTWARE AND SENDING COMMANDS After chip reset, the IMAOS04 or IMAOS04_Slave (a binary file shipped with the chip) should be loaded to the IDT82V2604 to interpret commands. The procedure of loading the IMAOS04 or IMAOS04_Slave Input FIFO Write Process write_message(char *message,char L) { Read Input_FIFO_empty_state bit of FIFO_STATE_REG register wait(INPUT_FIFO_EMPTY_STATE_EVENT); Input_FIFO_empty_state bit is set? N write_reg(FIFO_INT_RESET_REG,0x04); Y Clear the Input_FIFO_empty_state bit for(i=0;i<L;i++) { write_reg(INPUT_FIFO_DATA_REG,message[i]); Write L(L<=16) bytes into Input_FIFO } Write value L into INPUT_FIFO_LENGTH_REG register write_reg(INPUT_FIFO_LENGTH_REG,L); } Figure-8 Input FIFO Write Process IDT82V2604 INTERFACE 18 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Output FIFO Read Process read_message(char *message,char *L) { Read Output_FIFO_msg_available_state bit of FIFO_STATE_REG register wait(OUTPUT_FIFO_MSG_AVAILABLE_STATE_EVENT); Output_FIFO_msg_ available_state bit is set? N Y write_reg(FIFO_INT_RESET_REG,0x01); Clear the Output_FIFO_msg_available_state bit *L = 0x1f&(read_reg(OUTPUT_FIFO_LENGTH_REG)); Read Message Length L from OUTPUT_FIFO_LENGTH_REG register Read L bytes from OUTPUT_FIFO_DATA_REG register for(i=0;i<*L;i++) { message[i] = read_reg((OUTPUT_FIFO_DATA_REG); } } Figure-9 Output FIFO Read Process IDT82V2604 INTERFACE 19 December 8, 2003 IDT82V2604 3.4 Inverse Multiplexing for ATM SRAM INTERFACE The size of the SRAM can be selected from 2K byte to 512 Kbyte. When the minimum 2K byte memory is selected, only 11 address pins will be used. Different memory size will affect different delay compensation capability. Table-14 and Table-15 show memory size vs. maximum delay tolerance in T1 and E1 unchannelized modes respectively. The SRAM interface has an 8-bit wide data bus, EMD[7:0], and a 19bit wide address bus, EMA[18:0]. The minimum throughput is 4Mbyte/s and the minimum access time is 40ns. When both EM_WE pin and EM_CS pin are low, data can be written to the external SRAM. When both EM_OE pin and EM_CS pin are low, data can be read from the external SRAM. Table-14 Maximum Delay Tolerance Value for Different SRAM Size in T1 Unchannelized Mode SRAM Used (Kbyte) Maximum Delay Tolerance (ms) Address Bus Used 512 281 EMA[18:0] 256 141 EMA[17:0] 128 70 EMA[16:0] 64 35 EMA[15:0] 32 17.58 EMA[14:0] 16 8.79 EMA[13:0] 8 4.39 EMA[12:0] 4 2.20 EMA[11:0] 2 1.10 EMA[10:0] Table-15 Maximum Delay Tolerance Value for Different SRAM Size in E1 Unchannelized Mode IDT82V2604 INTERFACE SRAM Used (Kbyte) Maximum Delay Tolerance (ms) Address Bus Used 512 212 EMA[18:0] 256 106 EMA[17:0] 128 53 EMA[16:0] 64 26.5 EMA[15:0] 32 13.25 EMA[14:0] 16 6.625 EMA[13:0] 8 3.31 EMA[12:0] 4 1.66 EMA[11:0] 2 0.83 EMA[10:0] 20 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM IMA AND UNI FUNCTIONS1 4 Stuff Indication (LSI) field of the ICP cell. The stuff cell event will occur on the same frame on all the links. However, the pre-defined ICP offset will determine at which cell in the frame the stuff event will occur. The IDT82V2604 is capable of combining the transport bandwidth of multiple links into one single logical link. The logical link is called a group. The IDT82V2604 supports up to 4 independent groups with each group capable of supporting from 1 to 4 links. Links that are assigned to an IMA group are called in IMA mode while links that are not assigned to any IMA group can be used in UNI mode. 4.1 IMA MODE 4.1.1 IMA FRAME In ITC mode, a stuff cell is added to the TRL the same way as in CTC mode, that is, it is added after every 2048 ICP, filler and ATM layer cells. On all other links in the group, stuff cells are added as necessary to compensate for timing differences between the TRL and other links of the group. In an IMA group, if at least one of the links uses independent clock pin as its clock input, stuff mode can only be set as ITC. If all the links within the group use common clock pin (i.e., TSCCK and RSCCK) as their clock input, stuff mode can be set as either CTC or ITC. For details about the two clock modes, please refer to 3.2.2 Line Interface Timing Clock Modes. An IMA frame is defined as M consecutive cells, numbered from 0 to M-1 on each link, across all the links in an IMA group. It is generated by inserting an ICP cell after every M-1 cells per link. Values of M supported are 32, 64, 128 and 256, which can be programmed for all the links in a group by ConfigGroupPara command. The ICP cell occurs within the frame at the ICP cell offset position and should be at the same position throughout the frame. The ICP offset is programmable on a per-link basis by AddTxLink command. 4.1.2 4.1.4 The group link backup function is used to add a link to the group for backup in case of link failure. This function is only enabled when the device is working in symmetry mode. The link to be added to the group is specified as backup link or nonbackup link in "AddLink" command (i.e., AddTxLink and AddRxLink commands). Note that only one backup link is supported in each group. If several links are specified as backup links, only the last added backup link is regarded as a backup link. TRL (TIMING REFERENCE LINK) Within an IMA group, a TRL should be selected to pass synchronization from the transmit to the receive end. The TRL can be selected by ConfigTRLLink command. 4.1.3 STUFFING MODE When a link failure event occurred, the IDT82V2604 will automatically pick up a backup link and start to activate the link. The insertion of stuff cells is to compensate for timing differences between links within an IMA group. 4.2 There are two kinds of stuffing method: CTC (Common Transmit Clock) mode and ITC (Independent Transmit Clock) mode. The stuffing method is selected by ConfigGroupWorkMode command. UNI MODE ConfigDev command and ConfigUNILink command can be used to configure a UNI link. ConfigDev command can be used to configure TC Work Mode, TC Alpha and Delta value and LCD threshold. ConfigUNILink command can be used to configure link physical ID, Tx and Rx Utopia port, line interface Work Mode and clock mode. In CTC mode, a stuff cell is added after every 2048 ICP, filler and ATM layer cells. The stuff cell is generated by repeating the ICP cell. Both the ICP cell and the stuff cell are identified as ICP cells via the Link When a link is configured in UNI mode, IMA functions are bypassed. ATM cells are simply transmitted from the Utopia interface to the line interface. 1. Chapter 4, 5, 6 and 7 are specific to IMAOS04. Details about IMAOS04_Slave are provided in Chapter 8. IMA AND UNI FUNCTIONS LINK BACKUP 21 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 5 PROGRAMMING INFORMATION FOR IMAOS04 5.1 COMMAND TYPES There are three types of messages: 1.Command message (external MPUembedded controller) 2.Reply message (embedded controllerexternal MPU) 3.Notification message (embedded controllerexternal MPU) The formats of the three types of messages are different. 5.1.1 COMMAND MESSAGE 1 byte 1 byte at most 14 bytes Command Handler Command Type Command Parameters Figure-10 Command Message Format Command Handler From 0~126 defined by user's driver. It is the sequence number of the sent message. Command Type The encoding of the command. Refer to 5.2 Command Encoding. Command Parameters The Parameters of the command. 5.1.2 COMMAND REPLY MESSAGE 1 byte at most 14 byte Command Reply Handler Command Replies Figure-11 Command Reply Message Format Command Reply Handler The original Command Handler plus 128. Command Replies The replies of the original command. 5.1.3 ALARM MESSAGE 1 byte 1 byte 1 byte Alarm Handler Link ID /Group ID Alarm Type Figure-12 Alarm Message Format Alarm Handler FFH. Link ID /Group ID The link ID or group ID. Alarm Type The sequence in Table-53 Failure/Alarm Signals on page 63. PROGRAMMING INFORMATION for IMAOS04 22 December 8, 2003 IDT82V2604 5.2 Inverse Multiplexing for ATM COMMAND ENCODING Table-16 Command Encoding(1) Command Encoding 1. Command Name 01H ConfigDev 03H ConfigUtopiaIF 04H ConfigLoopMode 05H ConfigGroupPara 06H ConfigGroupInterFace 07H ConfigGroupWorkMode 08H ConfigGSMTimers 09H ConfigTRLLink 0AH ConfigIFSMPara 0BH AddTxLink 0CH AddRxLink 0DH ConfigUNILink 0EH StartGroup 0FH StartLASR 10H InhibitGrp 11H NotInhibitGrp 12H RestartGrp 13H DeleteGrp 14H RecoverLink 15H DeleteLink 16H DeactLink 17H GetGroupState 18H GetGroupDelayInfo 19H GetLinkState 1AH GetGrpPerf 1BH GetLinkPerf 1CH GetConfigPara 1DH GetGrpWorkingPara 1EH GetLinkWorkingPara 1FH StartTestPattern 20H GetLoopedTestPattern 21H StopTestPattern 22H GetVersionInfo If the user sends a value not listed in this table, IMAOS will be in unknown state. PROGRAMMING INFORMATION for IMAOS04 23 December 8, 2003 IDT82V2604 5.3 Inverse Multiplexing for ATM COMMAND DESCRIPTION Each command description contains two parts: the Command Parameters and the Command Reply. In the Command Parameters part, a figure is used to illustrate the byte sequence of the parameters. All the parameters description are listed below the figure. In the Command Reply part, a figure is used to illustrate the reply sequence in the reply message. The reply description is listed below the figure. For detailed information about the packet of command message and reply message, refer to page 22. Table-17 ConfigDev Command (Encoding: 01H) This is the first command to be issued. If this command is not issued, the default value will be used. Command Parameters 1-2 3 4 5 6 7 8 SysClk Tin Texit No TCWorkMode TCAlpha&Delta TCLCD_Threshold Byte Sequence Parameter Name Default Description 1-2 SysClk 4E20H 3 Tin 2H Timer of entering failure alarm state. When a defect persists for a period set by this timer, the IDT82V2604will enter failure alarm state. Unit: 250 ms 4 Texit 0AH Timer of exiting failure alarm state. If a defect no longer exists for a period set by this timer, the IDT82V2604 will exit failure alarm state. Unit: 250 ms 5 No 0H Reserved. Write 0 to this field. 6 TCWorkMode 7H SysClk=Frequency of System Clock (Hz)/1000. For example, if the system clock is 20 MHz, this value would be 20000. Unit: sys-ticks in 1 ms (MSB first) Note: Wrong configuration will make IMAOS's timer work improperly. Bit Position 7~3 7 TCAlpha&Delta Description Don't Care 2 1: Enable Tx TC scrambling (default); 0: Disable Tx TC scrambling 1 1: Enable Rx TC HEC error correct control (default); 0: Disable Rx TC HEC error correct control 0 1: Enable Rx TC de-scrambling (default); 0: Disable Rx TC de-scrambling 67H Bit Position Description 7-4 Delta value. Valid is 0~15. 3-0 Alpha value. Valid is 0~15. Alpha value is the number of consecutive incorrect HEC fields for the Rx cell synchronization state machine to exit sync state. Delta value is the number of consecutive correct HEC fields for the Rx cell synchronization state machine to enter sync state. PROGRAMMING INFORMATION for IMAOS04 24 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-17 ConfigDev Command (Encoding: 01H) (Continued) 8 TCLCD_Threshold 68H 0~255 LCD threshold. If the OCD anomaly persists for the time set by this parameter, LCD defect will be reported. Unit: one cell's transmission time Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter (length of the command is incorrect); Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 25 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-18 ConfigUtopiaIF Command (Encoding: 03H) Command Parameters 1-4 5-8 Tx Utopia port enable Rx Utopia port enable Byte Sequence Parameter Name 1-4 Tx Utopia port enable Default Description 00000000H Every bit of the 4 bytes enables a Utopia Tx port (MSB byte first, LSB byte last). 0: Disable the port; 1: Enable the port This 4 bytes parameter enables or disables each of the 31 Utopia port (port 31 is reserved and should not be used). The 4 bytes can be regarded as a sequence of 32 bits. The most significant bit in byte 1 (the first byte sent to embedded controller) is bit 31. The least significant bit of byte 4 (the last byte sent) is bit 0. 5-8 Rx Utopia port enable 00000000H Every bit of the 4 bytes enables a Utopia Rx port (MSB byte first, LSB byte last). 0: Disable the port; 1: Enable the port The meaning of this parameter is similar to the Utopia Tx port enable field. See above. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter (length of the command is incorrect); Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 26 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-19 ConfigLoopMode Command (Encoding: 04H) Command Parameters 1 Loop mode Byte Sequence Parameter Name Default 1 Loop mode 0H Description 0: Disable all the loopback functions; 1: Enable line interface internal loopback mode; 2: Enable line interface external loopback mode; 3: Enable Utopia loopback mode; Others: The same as 0. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter (length of the command is incorrect); Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 27 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-20 ConfigGroupPara Command (Encoding: 05H) This is the first command to configure a physical group. Other configuration commands prior to this command would make the group work improperly. Command Parameters 1 2 3 4 5-6 7 8 9 Group ID NE IMA ID M for Tx (Mtx) Acceptable M for Rx (Mrx) Max delay compensation value Version Backward Compatibility Ptx Prx Byte Sequence Parameter Name Default 1 Group ID NA (Not Available) 2 NE IMA ID 0H Description The physical group ID (0~3) This is the physical identification of an IMA group. Each Group ID is unique in the IDT82V2604 and should not be equal to any Channel ID that has been assigned to a UNI link. There are altogether 4 physical groups. This group ID can be any value from 0~3. It should be noted that this Group ID is not the same as IMA ID which is used to identify a logical IMA group and can be any value from 0~255. 0~255 This is the logical ID of a physical IMA group, which is packaged in ICP cells and is sent to the FE to indicate which group a link belongs to. 3 M for Tx (Mtx) 0H 0: 32 (default); 1: 64; 2: 128; 3: 256 This is the IMA frame length that this group will use at the transmit end. There are altogether 4 frame lengths that can be selected: 32, 64, 128 and 256. Note: Mtx must be right, otherwise IMAOS will work improperly. 4 Acceptable M for Rx (Mrx) NA Bit Meaning 3 1: Accept M=256 0: Do not accept M=256 2 1: Accept M=128 0: Do not accept M=128 1 1: Accept M=64 0: Do not accept M=64 0 1: Accept M=32 0: Do not accept M=32 This is the acceptable IMA frame length of the receive end. Note: The Mrx must be right, otherwise IMAOS will work improperly. 5-6 Max delay compensation value NA 0~1024 cells This is the maximum cells delay that can be tolerated. This value is constrained by the size of the external SRAM and it shall be no more than 1024 cells. Refer to 3.4 SRAM Interface. Note: If the value exceeds 1024, IMAOS will work improperly. 7 Version Backward Compatibility NA 0: No; 1: Yes Version backward compatibility indicates whether version 1.0 is supported when the FE's group is using IMA 1.0. By default, the chip works in version 1.1 and does not support backward compatibility. PROGRAMMING INFORMATION for IMAOS04 28 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-20 ConfigGroupPara Command (Encoding: 05H) (Continued) 8 Ptx NA 1~4 The minimum number of active Tx links for the GSM to move to operational state. This implies that the Tx links to be configured should be no less than this number. Note: If this value is larger than the link numbers that will be added later, this IMA group's state machine will stop at Insufficient-Link state. 9 Prx NA 1~4 The minimum number of active Rx links for the GSM to move to operational state. This implies that the Rx links to be configured should be no less than this number. In SCSO mode, if ptx is not equal to Prx, ptx is used as Prx. Note: If this value is larger than the link numbers that will be added later, this IMA group's state machine will stop at Insufficient-Link state. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 29 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-21 ConfigGroupInterFace Command (Encoding: 06H) This command should follow the ConfigGroupPara command. Command Parameters 1 2 3 Group ID Tx Utopia port Rx Utopia port Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). This is the same Group ID in ConfigGroupPara command. 2 Tx Utopia port 1FH 0~30 The Utopia port address for data transmit. Port 31 is reserved and should not be used. Note: The upper 3 bits are Don't Care. 3 Rx Utopia port 1FH 0~30 The Utopia port address for data receive. Port 31 is reserved and should not be used. Note: The upper 3 bits are Don't Care. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; 2: The physical group is not configurable (should issue ConfigGroupPara command first); Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 30 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-22 ConfigGroupWorkMode Command (Encoding: 07H) This should be the third command issued to configure a group, i.e., this command should follow ConfigGroupInterface command. Command Parameters 1 2 3 4 Group ID Symmetry mode Stuff mode Stuff adv mode Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). This is the same Group ID in ConfigGroupPara command. 2 Symmetry mode NA 0: SCSO (Symmetrical Configuration and Symmetrical Operation); 1: SCAO (Symmetrical Configuration and Asymmetrical Operation); 2: ACAO (Asymmetrical Configuration and Asymmetrical Operation) Note: Value exceeds 2 will be regarded as 0. 3 Stuff mode 1H 0: ITC (Independent Transmit Clock stuff insertion); 1: CTC (Common Transmit Clock stuff insertion) If at least one of the links uses independent clock pin as its clock input, stuff mode can only be set as ITC. If all the links within the group use common clock pin (i.e., TSCCK and RSCCK) as their clock input, stuff mode can be set as either CTC or ITC. Note: Wrong configuration will lead to wrong ICP cells. 4 Stuff adv mode 1H 0: Pre-notify the stuff event 1 frame ahead; 1: Pre-notify the stuff event 4 frames ahead. ICP stuff cell indication. It tells the FE the distance (unit is IMA frame) between the current ICP cell and the forthcoming stuff ICP cell. Note: The upper 7 bits are Don't Care. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; 2: The physical group is not configurable; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 31 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-23 ConfigGSMTimers Command (Encoding: 08H) Command Parameters 1 2 3 4 5 Group ID Timer for GSM startup Ack Timer for GSM Configure Abort Timer for GSM to report Rx=Active Timer for GSM to report Tx=Active Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). This is the same Group ID in ConfigGroupPara command. 2 Timer for GSM start-up Ack 4H 1~255 Unit: 250 ms This timer will start when the GSM enters start-up Ack state. If there is no response from the FE after a period set by this timer, the GSM will return from start-up Ack to start-up state. If 0 is sent, it will be interpreted as 1*250 ms by the embedded controller. 3 Timer for GSM Configure Abort 4H 1~255 Unit: 250 ms This timer will start when the GSM enters start-up Abort state. After a period set by this timer, the GSM will return to start-up state. If 0 is sent, it will be interpreted as 1*250 ms by the embedded controller. 4 Timer for GSM to report Rx=Active 4H 1~255 Unit: 250 ms This timer will start when all the Rx links are reported Usable. If either all the configured links are being reported Tx=Usable by the FE or the timer expires, all the Rx links will be brought to Active state. If 0 is sent, it will be interpreted as 1*250 ms by the embedded controller. 5 Timer for GSM to report Tx=Active 4H 1~255 Unit: 250 ms This timer will start when all the Tx links are reported Usable. If either all the configured links are being reported Rx=Active by the FE or the timer expires, all the Tx links will be brought to Active state. If 0 is sent, it will be interpreted as 1*250 ms by the embedded controller. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; 2: The physical group is not configurable; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 32 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-24 ConfigTRLLink Command (Encoding: 09H) Command Parameters 1 2 Group ID TxTRL Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). This is the same Group ID in ConfigGroupPara command. 2 TxTRL 0H 0~3 The TRL link selected for this group. Data on TSD1 pin is deemed data on Tx link 0; Data on TSD2 pin is deemed data on Tx link 1 and so on. This link should have been added to the group, otherwise the group will fail to start up. If the TRL link has been configured previously, this command is used to change the TRL link. Command Reply 1 Ack Byte Sequence Reply Name Ack Description 0: OK; 1: Invalid parameter; 2: The physical group is not configurable; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 33 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-25 ConfigIFSMPara Command (Encoding: 0AH) Command Parameters 1 2 Group ID Alpha&Beta&Gamma Byte Sequence Parameter Name Default 1 Group ID NA 2 Alpha&Beta&Gam ma 91H Description The physical group ID (0~3). This is the same Group ID in ConfigGroupPara command. Bit Meaning 7-6 5-3 2-0 Alpha value. Default is 2. Beta value. Default is 2. Gamma value. Default is 1. Alpha value is the number of consecutive invalid ICP cells for the IFSM state machine to exit SYNC state. Beta is the number of consecutive errored ICP cells for the IFSM state machine to exit SYNC state. Gamma is the number of consecutive valid ICP cells for the IFSM state machine to enter SYNC state. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; 2: The physical group is not configurable; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 34 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-26 AddTxLink Command (Encoding: 0BH) Command Parameters 1 2 3 4 5 6 7 Group ID Tx link physical ID Tx line interface Work Mode Tx line interface clock Tx link logical ID Tx link ICP offset Backup function Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). This is the same Group ID in ConfigGroupPara command. 2 Tx link physical ID NA 0~3 The Tx link that will be configured to this group. Data on TSD1 pin is deemed data on Tx link 0; Data on TSD2 pin is deemed data on Tx link 1 and so on. Note: Value exceeds 3 will lead to IMAOS crash. 3 Tx line interface Work Mode 0FH Mode0~Mode15 Line interface Work Mode for this link. Note: If the value exceeds 15, IMAOS will work improperly. 4 Tx line interface clock 0H 0: Common Clock Mode; 1: Independent Clock Mode Line interface clock input mode. The line interface mode7~mode10 and mode14~mode15 cannot be used in Independent Clock Mode. Note: IMAOS does not check this value. Value exceeds 1 will cause wrong configuration. 5 Tx link logical ID 0H 0~31 The logical Tx link # designated to that physical link. It is used for Tx ICP cell. Note: IMAOS does not check this value. If this value is wrong, IMAOS will work improperly. 6 Tx link ICP offset 0H The ICP offset over that Tx link The ICP cell offset of the IMA frame on that link. This value should be smaller than the Tx frame length. Note: If this value is wrong, IMAOS will work improperly. 7 Backup function NA 0: No; 1: Yes Whether this is a backup link or not. When other links failed, this link will be automatically added to the group. Note1: Only one backup link is supported in each group. If several links are specified as backup links, only the last added backup link is regarded as a backup link. Note2: If a backup link is added after the StartGroup or StartLASR command, a StartLASR command should be issued to make this backup link take effect. PROGRAMMING INFORMATION for IMAOS04 35 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-26 AddTxLink Command (Encoding: 0BH) (Continued) Command Reply 1 Ack Byte Sequence Reply Name Ack Description 0: OK; 1: Invalid parameter; 2: The physical group is not configurable; 3: Tx physical link is used by other groups; 4: Tx ICP offset is larger than M; 5: Link logical ID is used by other links in this group; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 36 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-27 AddRxLink Command (Encoding: 0CH) Command Parameters 1 2 3 4 5 Group ID Rx link physical ID Rx line interface Work Mode Rx line interface clock Backup function Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). This is the same Group ID in ConfigGroupPara command. 2 Rx link physical ID NA 0~3 The Rx link that will be configured to this group. Data on RSD1 pin is deemed data on Rx link 0; Data on RSD2 pin is deemed data on Rx link 1 and so on. Note: If the value exceeds 3, the performance cannot be guaranteed. 3 Rx line interface Work Mode 0FH Mode0~mode15 Line interface Work Mode for this link. Note: If the value exceeds 15, the performance cannot be guaranteed. 4 Rx line interface clock 0H 0: Common Clock Mode; 1: Independent Clock Mode Line interface clock input mode. The line interface mode7~mode10 and mode14~mode15 cannot be used in Independent Clock Mode. Note: IMAOS does not check this value. Value exceeds 1 will cause wrong configuration. 5 Backup function NA 0: No; 1: Yes Whether this is a backup link or not. When other links fail, this link will be automatically added to the group. Note: Only one backup link is supported in each group. If several links are specified as backup links, only the last added backup link is regarded as a backup link. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; 2: The physical group is not configurable; 3: The Rx physical link is used by other groups; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 37 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-28 ConfigUNILink Command (Encoding: 0DH) Command Parameters 1 2 3 4 5 6 Channel ID Link physical # Tx Utopia Port Rx Utopia Port link line interface Work Mode link line interface clock Byte Sequence Parameter Name Default 1 Channel ID NA Description 0~3 The internally used channel for this UNI link. Each Channel ID is unique and should not be equal to any Group ID that has been assigned. 2 Link physical # NA 0~3 The physical link to be used in UNI mode. Note: If the value exceeds 3, the performance cannot be guaranteed. 3 Tx Utopia Port 1FH 0~30 The Utopia port address for data transmit. Port 31 is reserved and should not be used. Note: The upper 3 bits are Don't Care. 4 Rx Utopia Port 1FH 0~30 The Utopia port address for data receive. Port 31 is reserved and should not be used. Note: The upper 3 bits are Don't Care. 5 link line interface Work Mode 0FH Mode0~mode15 Line interface Work Mode for this link. Note: If the value exceeds 15, IMAOS will work improperly. 6 link line interface clock 0H 0: Common Clock Mode; 1: Independent Clock Mode Line interface clock input mode. The line interface mode7~mode10 and mode14~mode15 cannot be used in Independent Clock Mode. Note: IMAOS does not check this value. Value exceeds 1 will cause wrong configuration. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: The link is busy or Channel ID is over 15; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 38 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-29 StartGroup Command (Encoding: 0EH) This command is used to start a configured group. Command Parameters 1 Group ID Byte Sequence Parameter Name Default 1 Group ID NA Description The valid physical group that has been configured. This is the same Group ID in ConfigGroupPara command. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: The group is not configured; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 39 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-30 StartLASR Command (Encoding: 0FH) This command is used to start LASR procedure on one or more links. The links here may be new links or links with failure/fault/inhibiting condition. This command may combine with AddTxLink and AddRxLink commands. Command Parameters 1 Group ID Byte Sequence Parameter Name Default 1 Group ID NA Description The physical group ID (0~3). Valid physical group that has been configured and is in OPERATIONAL state. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: The group is not configured; 3: The Previous LASR is not finished; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 40 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-31 InhibitGrp Command (Encoding: 10H) This command is used to inhibit a group. Once a group is inhibited by this command, it will go to BLOCKED state instead of the OPERATIONAL state when sufficient links exist in the group. If the group is already in OPERATIONAL state, the GSM will transition to BLOCKED state. Command Parameters 1 Group ID Byte Sequence Parameter Name Default 1 Group ID NA Description The physical group ID (0~3). The physical group to be inhibited. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 41 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-32 NotInhibitGrp Command (Encoding: 11H) This command is used to clear the inhibiting status. If a group is in BLOCKED state, the GSM will go to OPERATIONAL state. Command Parameters 1 Group ID Byte Sequence Parameter Name Default 1 Group ID NA Description The physical group ID (0~3). The physical group to be uninhibited. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 42 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-33 RestartGrp Command (Encoding: 12H) This command is used to restart the specified group. The GSM will go back to Start-up state and all the Tx and Rx links will go back to Unusable state. Command Parameters 1 Group ID Byte Sequence Parameter Name Default 1 Group ID NA Description The physical group ID (0~3). The physical group to be restarted. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: The group is not configured; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 43 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-34 DeleteGrp Command (Encoding: 13H) This command is used to delete the specified group and all its links at once. Upon the issue of this command, the GSM will go back to Not Configured state and all the links will transition to Not In Group state. Command Parameters 1 Group ID Byte Sequence Parameter Name Default 1 Group ID NA Description The physical group ID (0~3). The physical group to be deleted. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter (length of the command is incorrect or Group ID is over 3); Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 44 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-35 RecoverLink Command (Encoding: 14H) This command is used to tell the IDT82V2604 that a link is no longer in fault state or cancel the inhibition made by "DeactLink" command. This command should combine with a "StartLASR" command in order to recover the link physically. Command Parameters 1 2 3 Group ID Link physical ID Direction Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). The physical group that contains the link to be recovered by this command. 2 Link physical ID NA 0~3 The physical link to be recovered. The link should belong to the group, and was previously deactivated. 3 Direction NA 0: Rx; 1: Tx; 2: Both Note1: If the group is in symmetry mode, both links should be recovered; Note2: If the value exceeds 2, IMAOS will work improperly. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; 2: The link does not belong to that group; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 45 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-36 DeleteLink Command (Encoding: 15H) This command is used to delete a link from a group. Command Parameters 1 2 3 Group ID /Channel ID Link physical ID Direction Byte Sequence Parameter Name Default Description 1 Group ID /Channel ID NA The physical group ID (0~3) or Channel ID (0~3). The physical group that contains the link to be deleted or Channel ID of the UNI link to be deleted. 2 Link physical ID NA 0~3 Physical link to be deleted. The link should belong to the group. 3 Direction NA 0: Rx; 1: Tx; 2: Both Note1: If the group is in symmetry mode, both directions are deleted and the direction value is ignored. If it is a UNI link, this parameter is ignored. Note2: If the value exceeds 2, IMAOS will work improperly. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: The link does not belong to that group; Others: Internal error. The chip should be reset. After the link has both ends deleted, the link is in UNI mode, which is the default Work Mode of a link. The "GetLinkState" command can be used to poll the link state. PROGRAMMING INFORMATION for IMAOS04 46 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-37 DeactLink Command (Encoding: 16H) This command is to make a link go to Unusable state due to user defined fault condition or that user just wants to inhibit it. Command Parameters 1 2 3 4 Group ID Link physical ID Reason Direction Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3) The physical group that contains the link to be deactivated by this command. 2 Link physical ID NA 0~3 Physical link to be deactivated. The link should belong to the group. Note: If the value exceeds 3, the performance cannot be guaranteed. 3 Reason NA 0: Inhibition; 1: Fault 4 Direction NA 0: Rx; 1: Tx; 2: Both Note1: If the group is in symmetry mode, both directions are deactivated and the direction value is ignored. Note2: If the value exceeds 2, IMAOS will work improperly. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: The link does not belong to that group; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 47 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-38 GetGroupState Command (Encoding: 17H) Command Parameters 1 Group ID Byte Sequence Parameter Name 1 Group ID Description The physical group ID (0~3). Command Reply 1 2 3 4 Ack NEGSMState FEGSMState NEGTSMState Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: Information not available; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, values for the following fields will not be returned. 2 NEGSMState Bits 3:0: NE Group State 0000: Start-up; 0001: Start-up-Ack; 0010: Config-Aborted - Unsupported M; 0011: Config-Aborted - Incompatible Group Symmetry; 0100: Config-Aborted - Unsupported IMA Version; 0101, 0110: Reserved for other Config-Aborted reasons in a future version of the IMA specification; 0111: Config-Aborted - Other reasons; 1000: Insufficient-Links; 1001: Blocked; 1010: Operational; Others: Reserved for later use in a future version of the IMA specification. 3 FEGSMState Bits 3:0: FE Group State 0000: Start-up; 0001: Start-up-Ack; 0010: Config-Aborted - Unsupported M; 0011: Config-Aborted - Incompatible Group Symmetry; 0100: Config-Aborted - Unsupported IMA Version; 0101, 0110: Reserved for other Config-Aborted reasons in a future version of the IMA specification; 0111: Config-Aborted - Other reasons; 1000: Insufficient-Links; 1001: Blocked; 1010: Operational; Others: Reserved for later use in a future version of the IMA specification. 4 NEGTSMState 0: GTSM is down; 1: GTSM is up. NE GTSM state. PROGRAMMING INFORMATION for IMAOS04 48 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-39 GetGroupDelayInfo Command (Encoding: 18H) Command Parameters 1 Group ID Byte Sequence Parameter Name 1 Group ID Description The physical group ID (0~3). Command Reply 1 2-3 Ack MaxDiffDelayOfGroupLinks Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: The info is not available; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, the value for the following field will not be returned. 2-3 MaxDiffDelayOfGroupLinks (cells) The maximum delay value between any two links in that group. (MSB byte first) PROGRAMMING INFORMATION for IMAOS04 49 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-40 GetLinkState Command (Encoding: 19H) Command Parameters 1 Physical link # Byte Sequence Parameter Name 1 Physical link # Description 0~3 The # of the physical link. Command Reply 1 2 3 4 5 6 7 Ack NERxState NETxState FERxState FETxState TC State IMA SYNC State Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; Others: Internal error. The chip should be reset. Note1: For a UNI link, only the TC State value is meaningful. Other values are all meaningless. Note2: If Ack is not equal to 0, values for the following fields will not be returned. 2 NERxState 0x00: not in any group; 0x01: Unusable-No-reason; 0x02: Unusable-Fault; 0x03: Unusable-Misconnected; 0x04: Unusable-Inhibited; 0x05: Unusable-Failed; 0x06: Usable; 0x07: Active. The NE Rx LSM State. 3 NETxState The same as above. The NE Tx LSM State. 4 FERxState The same as above. The FE Rx LSM State. 5 FETxState The same as above. The FE Tx LSM State. 6 TC State 7 IMA Sync State Bit2: 0: Not TC sync; 1: TC sync. Other bits: Don't Care Bit5: 0: Not IMA sync state; 1: IMA sync state. Other bits: Don't Care PROGRAMMING INFORMATION for IMAOS04 50 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-41 GetGrpPerf Command (Encoding: 1AH) Command Parameters 1 Group ID Byte Sequence Parameter Name 1 Group ID Description The physical group ID (0~3). Command Reply 1 2-3 Ack Value Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: Info not available; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, the value for the following field will not be returned. 2-3 Value value of GR-UAS-IMA (For detailed definition, refer to Table-51) (MSB byte first) If Ack is equal to 0, the value of IMAGrpUnavaiSec will be returned. If the performance parameter is not retrieved after a long period, it might reach the maximum value. In this case, the value is held. If Ack is not 0, the value will be 0. PROGRAMMING INFORMATION for IMAOS04 51 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-42 GetLinkPerf Command (Encoding: 1BH) Command Parameters 1 2 Physical link # Type Byte Sequence Parameter Name 1 Physical link # 2 Type Description 0~3 The # of the physical link. The performance types (For detailed description of these performance types, please refer to Table-51): Performance Type Parameters 0 SES-IMA SES-IMA-FE UAS-IMA UAS-IMA-FE Tx-UUS-IMA Rx-UUS-IMA Tx-UUS-IMA-FE Rx-UUS-IMA-FE OCD_TC HCS_ERR_TC IV-IMA Rx-Stuff-IMA Tx-Stuff-IMA OIF-IMA 1 2 3 Command Reply 1 2-10 Ack Value Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: Info not available; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, the value for the following field will not be returned. PROGRAMMING INFORMATION for IMAOS04 52 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-42 GetLinkPerf Command (Encoding: 1BH) (Continued) 2-10 Value The counter value of the performance parameter according to Type (MSB first). The returned value occupies 9 bytes. Different parameters take different number of bytes. Performance Type Parameters Bytes 0 SES-IMA SES-IMA-FE UAS-IMA UAS-IMA-FE 0 Tx-UUS-IMA Rx-UUS-IMA Tx-UUS-IMA-FE Rx-UUS-IMA-FE 0 OCD_TC HCS_ERR_TC IV-IMA Rx-Stuff-IMA Tx-Stuff-IMA OIF-IMA 2 2 2 2 1 2 2 2 2 1 3 3 3 3 3 3 1 2 3 Note: If the performance parameters are not retrieved after a long period, they might reach the maximum value. In this case, the values are held. PROGRAMMING INFORMATION for IMAOS04 53 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-43 GetConfigPara Command (Encoding: 1CH) This command is used to get the parameters as shown in the parameter list of a command (designated by Command ID), i.e., get the configured information or default information as a command's parameter list designated. Command Parameters 1 2 Command ID Group ID Byte Sequence Parameter Name 1 Command ID Description The command encoding of the commands below: * ConfigDev * ConfigUTOPIAIF * ConfigLoopMode * ConfigGroupPara * ConfigGroupInterface * ConfigGroupWorkMode * ConfigGSMTimers * ConfigTRL * ConfigIFSMpara Note: If the value is not one from above, IMAOS will crash. 2 Group ID The group ID (If Command ID is "ConfigDev", don't care this parameter, that is, any value will do.) If the command (such as ConfigDev command) has no GroupID parameter, this field should be set to 0 and will be ignored by the embedded controller. Command Reply 1 2 3 4-12 Ack Command ID sent before Group ID sent before Parameter sent before Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: Info not available; Others: Internal error. The chip should be reset. Note1: If Ack is not equal to 0, values for the following fields will not be returned. Note2: If Ack for this command is equal to 0 but the Ack for the command sent before is not equal to 0, values for the following fields are undetermined. 2 Command ID sent before The command ID sent before. 3 Group ID sent before The Group ID sent before. For ConfigDev command, this byte has no meaning. 4-12 Parameter sent before This field contains all the parameters that were sent previously excluding the Group ID, as it is returned in byte 3. The length of this field depends on the Command ID and the sequence is the same as the input. PROGRAMMING INFORMATION for IMAOS04 54 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-44 GetGrpWorkingPara Command (Encoding: 1DH) Command Parameters 1 Group ID Byte Sequence Parameter Name 1 Group ID Description The physical group ID (0~3). Command Reply 1 2 3 4 5 6 7 8 Ack NE IMA ID FE IMA ID Mtx Mrx Version now used Tx TRL Rx TRL Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: Info not available; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, values for the following fields will not be returned. 2 NE IMA ID The IMA ID in the ICP cell transmitted to the FE from the NE. 3 FE IMA ID The IMA ID in the ICP cell that the NE received from the FE. 4 Mtx The IMA frame length the NE is using. 5 Mrx The IMA frame length the FE is using. 6 Version now used 7 Tx TRL The physical link # used for Tx TRL. 8 Rx TRL The physical link # the FE used for TRL. 0: Both ends are 1.1; 1: The FE is 1.0 and the NE is 1.0 compatible. PROGRAMMING INFORMATION for IMAOS04 55 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-45 GetLinkWorkingPara Command (Encoding: 1EH) Command Parameters 1 Physical link # Byte Sequence Parameter Name 1 Physical link # Description 0~3. The # of the physical link. Command Reply 1 2 3 4 5 6 7 Ack Mode Group ID # /UNI mode Utopia Tx port TxLink ID / UNI mode Utopia Rx port RxLink ID Tx ICP offset Rx ICP offset Byte Sequence Reply Name 1 Ack Description 0: Acknowledge; 1: Invalid parameter; 2: Info not available; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, values for the following fields will not be returned. 2 Mode 0: UNI; 1: IMA mode - Both Tx and Rx are used; 2: IMA mode - Only Tx used; 3: IMA mode - Only Rx used 3 Group ID # /UNI mode Utopia Tx port If Mode is IMA, this value means which physical group at the NE the link belongs to; If mode is UNI, this value is the Utopia Tx port address. 4 TxLink ID / UNI mode Utopia Rx port If Mode is IMA, this value means the logical link # assigned (0~31), If mode is UNI, this value is the Utopia Rx port address. 5 RxLink ID 6 Tx ICP offset 0~255 (in IMA mode; not used in UNI mode). 7 Rx ICP offset 0~255 (in IMA mode; not used in UNI mode). The logical link ID # the FE is using. PROGRAMMING INFORMATION for IMAOS04 56 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-46 StartTestPattern Command (Encoding: 1FH) Command Parameters 1 2 3 Group ID Physical link # Pattern Byte Sequence Parameter Name 1 Group ID 2 Physical link # 3 Pattern Description The physical group ID (0~3) 0~3 The # of the physical link. 0~FFH, and FFH is not recommended. This byte is used to define the pattern for testing purpose. Command Reply 1 Ack Byte Sequence Reply Name Ack Description 0: Acknowledge; 1: Invalid parameter; 2: The link does not belong to the group; Others: Internal error. The chip should be reset. PROGRAMMING INFORMATION for IMAOS04 57 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-47 GetLoopedTestPattern Command (Encoding: 20H) Command Parameters 1 2 Group ID Physical link # Byte Sequence Parameter Name 1 Group ID 2 Physical link # Description The physical group ID (0~3) 0~3 The # of the physical link. Command Reply 1 2 Ack Pattern Byte Sequence Reply Name Ack 1 Description 0: Acknowledge; 1: Invalid parameter; 2: The link does not belong to the group; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, the value for the following field will not be returned. Pattern 1 The FE looped test pattern over that link PROGRAMMING INFORMATION for IMAOS04 58 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-48 StopTestPattern Command (Encoding: 21H) Command Parameters 1 Group ID Byte Sequence Parameter Name 1 Group ID Description The physical group ID (0~3) Command Reply 1 Ack Byte Sequence Reply Name 1 Ack Description 0: OK; 1: Invalid parameter; Others: Internal error. The chip should be reset. Table-49 GetVersionInfo Command (Encoding: 22H) Command Parameters No. Command Reply 1 2 3 Ack SW_ver_majority SW_ver_minority Byte Sequence Reply Name 1 Ack Description 0: OK; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, values for the following fields will not be returned. 2 SW_ver_majority The integer part of the version. For example, if the current version is 1.12, the returned value will be 1. 3 SW_ver_minority The fractional part of the version. For example, if the current version is 1.12, the returned value will be 12. PROGRAMMING INFORMATION for IMAOS04 59 December 8, 2003 IDT82V2604 6 Inverse Multiplexing for ATM IMA OPERATION 6.2 After a group is configured, an ID (IMA ID) is allocated to a physical group, links are assigned to that group and other parameters needed for the group's proper operation are set. The IMA ID should not be changed during the whole life cycle of the group except that the group is restarted. Table-50 is the list of group parameters that should be configured. This chapter is a brief introduction of how a group and links are configured, started, inhibited, deleted and so on. 6.1 CONFIGURE A GROUP IMA INITIALIZATION ConfigDev command is the first command to be issued to initialize the device. If this command is not issued, the default value will be used. Table-50 Parameters for IMA Group Configuration Parameter Name Description Group ID The physical group ID used for this IMA group. NE IMA ID The IMA group logical ID#. M for Tx (Mtx) The frame length that the NE Tx would like to use. Acceptable M for Rx (Mrx) The frame length proposed by the FE Tx that the NE Rx can accept. Max delay compensation value (cells) The maximum different link delay value a group is expected to have. Version Backward Compatibility Whether IMA 1.0 is supported TxUtopia port The Utopia address where ATM traffic comes from RxUtopia port The Utopia address where ATM traffic goes Symmetry mode The group link's configuration and operation mode. Timing clock mode The transmission timing clock mode. Stuff mode The SICP insertion method. Stuff adv mode The stuff pre-notify mode. Valid value is 1 or 4. Timer for GSM start up Ack This is the timer for GSM to return from start-up Ack to start-up state when there is no response from the FE. Timer for GSM Configure Abort This is the timer for GSM to return from start-up Abort state to start-up state. Timer for GSM to report Rx=active This is the timer for Group wide start-up procedure to report Rx=Active state. Timer for GSM to report Tx=active This is the timer for Group wide start-up procedure to report Tx=Active state. Tx TRL The transmit timing reference link. (Physical ID) Alpha The number of consecutive invalid ICP cells for the IFSM state machine to exit SYNC state. Default value is 2. Beta The number of consecutive errored ICP cells for the IFSM state machine to exit SYNC state. Default value is 2. Gamma The number of consecutive valid ICP cells for the IFSM state machine to enter SYNC state. Default value is 1. Ptx The minimum number of active Tx links for the group to enter operational state Prx The minimum number of active Rx links for the group to enter operational state All the Tx links' physical IDs The physical links' ID used for transmission. All the Tx links' logical IDs The logical link ID for each Tx link. All the Rx links' physical IDs The physical links' ID used for receiving. All Tx links' line interface Work Mode The line interface Work Mode for each Tx link. All Rx links' line interface Work Mode The line interface Work Mode for each Rx link. All Tx links' line interface clock mode The line interface clock mode for each Tx link. All Rx links' line interface Work Mode The line interface clock mode for each Rx link. IMA OPERATION 60 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-50 Parameters for IMA Group Configuration (Continued) Tx links' ICP offsets The ICP cell location within the IMA frame transmitted over each Tx link. All Tx links' backup property The Tx link added to the group is a backup link or not. All Rx links' backup property The Rx link added to the group is a backup link or not. 6.3 START UP A GROUP 6.7 A group can be started by StartGroup command. At IMA group startup, the NE and the FE exchange their configuration parameters. When both ends accept the parameters proposed by the other end, they enter an intermediate state to wait for Ptx and Prx links to enter active state. The group can then enter operational state. 6.4 Links are deactivated because of link fault, failure (Rx failed) or inhibition while links are recovered because defect no longer exists or inhibition is cancelled. The deactivation-recovering of a link is done by the IDT82V2604 automatically according to the FE notification (Remote Failure Indicator in ICP cell) or by the embedded controller (issue commands like DeactLink and RecoverLink commands) due to link fault or inhibition or no longer link fault or inhibition. INHIBIT A GROUP/NOT INHIBIT A GROUP The inhibition of a group is the shut down of the group for a reason other than insufficient links. 6.8 A group can be inhibited by InhibitGrp command. RESTART A GROUP After a group is started, the parameters of the group can be reconfigured at any time, which will cause the group to be restarted automatically. However, a group can also be restarted by RestartGrp command. When a group is restarted, the GSM transits to Start-up state from any other states except Not Configured state. If the GSM is in Operational state, the group may be blocked and all the links be inhibited before restart. A group inhibition state can be cancelled by NotInhibitGrp command. 6.5 ADD LINKS TO A GROUP THAT IS IN OPERATIONAL STATE The LASR (Link Addition and Slow Recovery) procedure is to be started when new links are to be inserted or links are to be recovered from a group. 6.9 DELETE A GROUP When a group is deleted from any other state by DeleteGrp command, the GSM enters Not Configured state and all the links belonging to that group will also be deleted and unassigned. The LASR procedure can be started by StartLASR command. 6.6 DEACTIVATE AND RECOVER LINKS DELETE LINKS A link can be removed by DeleteLink command. The deletion procedure can be initiated from both the Tx and Rx side. IMA OPERATION 61 December 8, 2003 IDT82V2604 7 Inverse Multiplexing for ATM PMON (PERFORMANCE MONITORING) The PMON module uses counters for performance monitoring and failure/alarms integration. Table-51 shows the performance parameters that the IDT82V2604 implements. Table-53 lists the failure/alarm signals sent by alarm messages. Table-51 The PMON Parameters Parameter Link/Group Definition SES-IMA Link Count of NE Severely Errored Seconds. SES-IMA-FE Link Count of FE Severely Errored Seconds. UAS-IMA Link Count of NE UnAvailable Seconds. UAS-IMA-FE Link Count of FE UnAvailable Seconds. Tx-UUS-IMA Link Count of NE Tx Unusable seconds. Rx-UUS-IMA Link Count of NE Rx Unusable seconds. Tx-UUS-IMA-FE Link Count of FE Tx UnUsable Seconds. Rx-UUS-IMA-FE Link Count of FE Rx UnUsable Seconds. OCD_TC Link Count of link out of cell delineation entrances. HCS_ERR_TC Link Count of Cell header sequence error. IV-IMA Link Count of ICP Violations. Three types of ICP invalid signals will cause the IV-IMA. They are: Errored ICP, invalid ICP and missing ICP. (See Table-52 for definitions). The IV-IMA is counted only during Non-SES-IMA or Non-UAS-IMA period. Rx-Stuff-IMA Link Count of received Stuff ICP cells over one link. Tx-Stuff-IMA Link Count of transmitted Stuff ICP cells over one link. OIF-IMA Link Count of Out of IMA Frame anomalies except during SES-IMA or UAS-IMA conditions. GR-UAS-IMA Group Count of Seconds when GTSM is down. Retrieve GetLinkPerf command GetGrpPerf command Table-52 Definitions of Different ICP Cells ICP Cell Type Definition Errored ICP Cell with a HEC or CRC-10 error at expected ICP frame position and is not a Missing ICP cell. Invalid ICP Cell with good HEC and CRC-10 and CID=ICP at expected frame position but with one of the following unexpected errors: * Unexpected IMA label * Unexpected LID * Unexpected IMA ID * Received M expected M * Unexpected IMA frame sequence number * Unexpected ICP cell offset Missing ICP Cell located at ICP cell location with: * No HEC error but without IMA OAM cell header or * No HEC error and with IMA OAM cell header but the CID ICP. PMON (Performance Monitoring) 62 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-53 Failure/Alarm Signals Sequence Name Link /Group Implement Definition 01H LCD Link SW Loss of Cell Delineation. 02H LIF Link SW Loss of IMA Frame. 03H LODS Group wide and Link specific SW Link Out of Delay Synchronization. 04H RFI-IMA Link SW Persistence of an RDI-IMA defect at the NE. 05H Tx-Unusable-FE Link SW When the FE reports Tx-Unusable. 06H Rx-Unusable-FE Link SW When the FE reports Rx-Unusable. 07H Start-up-FE Group SW When the FE is starting-up (the declaration of this failure alarm may be delayed to ensure the FE remains in Start-up). 08H Config-Aborted Group SW When the FE tries to use unacceptable configuration parameters. 09H Config-Aborted-FE Group SW When the FE reports unacceptable configuration parameters. 0AH Insufficient-Links Group SW When less than Ptx transmit or Prx receive links are Active. 0BH Insufficient-Links-FE Group SW When the FE reports that less than Ptx transmit or Prx receive links are Active. 0CH Blocked-FE Group SW When the FE reports that it is blocked. 0DH GR-Timing-Mismatch Group SW When the FE transmit clock mode is different from the NE transmit clock mode. PMON (Performance Monitoring) 63 December 8, 2003 IDT82V2604 8 Inverse Multiplexing for ATM IMAOS04_SLAVE 8.2 PROGRAMMING INFORMATION FOR IMAOS04_SLAVE The previous chapters 4, 5, 6 and 7 are specific to IMAOS04. Details about IMAOS04_Slave are provided in this chapter. 8.2.1 When IMAOS04_Slave is downloaded, the device supports the Group Auto Detect function and operates in Slave Mode. 8.1 Refer to 5.1 Command Types. 8.2.2 GROUP AUTO DETECT Command Encoding MASTER SIDE The Master Side should download IMAOS04 and work in symmetry mode. Up to 4 groups can be started at the Master side. The configuration of the Master Side is the same as that in normal Work Mode. 8.1.2 COMMAND ENCODING Table-54 Command Encoding The group auto detect function can be used to configure and start a group from one end while forcing the other end's group to follow this end's group configuration and start-up procedure, that is, the other end's group can be brought into operational state automatically. The two ends are called Master Side and Slave Side separately. 8.1.1 COMMAND TYPES 8.2.3 Command Name 01H DeviceInitial 02H ConfigSlaveFrame 03H ConfigUtopiaIF 22H GetVersionInfo 23H GroupInitial COMMAND DESCRIPTION Each command description contains two parts: the Command Parameters and the Command Reply. In the Command Parameters part, a figure is used to illustrate the byte sequence of the parameters. All the parameters description are listed below the figure. In the Command Reply part, a figure is used to illustrate the reply sequence in the reply message. The reply description is listed below the figure. For detailed information about the packet of command message and reply message, refer to page 22. SLAVE SIDE The Slave Side should download IMAOS04_Slave. After power-on or reset, the Slave Side should be initialized by issuing the DeviceInitial, ConfigSlaveFrame, ConfigUtopiaIF and GroupInitial commands. Only after the Slave Side has been initialized will the Slave Side start to detect the far end's start-up procedure. After the far end has started up, the Slave Side will be brought into operational state automatically without any need of local group configuration and management. IMAOS04_SLAVE 64 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-55 DeviceInitial Command (Encoding: 01H) This is the first command to be issued. If this command is not issued, the default value will be used. Command Parameters 1-2 3 4 5 6 7 8 SysClk Tin Texit No TCWorkMode TCAlpha&Delta TCLCD_Threshold Byte Sequence Parameter Name Default 1-2 SysClk 4E20H Description SysClk=Frequency of System Clock (Hz)/1000. For example, if the system clock is 20 MHz, this value would be 20000. Unit: sys-ticks in 1 ms (MSB first) Note: Wrong configuration will make IMAOS_Slave's timer work improperly. 3 Tin 2H Timer of entering failure alarm state. When a defect persists for a period set by this timer, the IDT82V2604will enter failure alarm state. Unit: 250 ms 4 Texit 0AH Timer of exiting failure alarm state. If a defect no longer exists for a period set by this timer, the IDT82V2604 will exit failure alarm state. Unit: 250 ms 5 No 0H Reserved. Write 0 to this field. 6 TCWorkMode 7H Bit Position 7~3 7 TCAlpha&Delta Description Don't Care 2 1: Enable Tx TC scrambling (default); 0: Disable Tx TC scrambling 1 1: Enable Rx TC HEC error correct control (default); 0: Disable Rx TC HEC error correct control 0 1: Enable Rx TC de-scrambling (default); 0: Disable Rx TC de-scrambling 67H Bit Position Description 7-4 Delta value. Valid is 0~15. 3-0 Alpha value. Valid is 0~15. Alpha value is the number of consecutive incorrect HEC fields for the Rx cell synchronization state machine to exit sync state. Delta value is the number of consecutive correct HEC fields for the Rx cell synchronization state machine to enter sync state. 8 TCLCD_Threshold IMAOS04_SLAVE 68H 0~255 LCD threshold. If the OCD anomaly persists for the time set by this parameter, LCD defect will be reported. Unit: one cell's transmission time 65 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-55 DeviceInitial Command (Encoding: 01H) (Continued) Command Reply 1 Ack Byte Sequence Reply Name 1 Ack IMAOS04_SLAVE Description 0: OK; 1: Invalid parameter (length of the command is incorrect); Others: Internal error. The chip should be reset. 66 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-56 ConfigSlaveFrame Command (Encoding: 02H) Command Parameters 1 2 line interface Work Mode line interface clock mode Byte Sequence Parameter Name Default 1 line interface Work Mode 0FH Description Mode0~mode15 Line interface Work Mode for all the links. 2 line interface clock mode 0H 0: Common Clock Mode; 1: Independent Clock Mode Line interface clock input mode for all the links. Line interface mode7~mode10 and mode14~mode15 cannot be used in Independent Clock Mode. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack IMAOS04_SLAVE Description 0: OK; 1: Invalid parameter (length of the command is incorrect). Others: Internal error. The chip should be reset. 67 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-57 ConfigUtopiaIF Command (Encoding: 03H) Command Parameters 1-4 5-8 Tx Utopia port enable Rx Utopia port enable Byte Sequence Parameter Name 1-4 Tx Utopia port enable Default Description 00000000H Every bit of the 4 bytes enables a Utopia Tx port (MSB byte first, LSB byte last). 0: Disable the port; 1: Enable the port This 4 bytes parameter enables or disables each of the 31 Utopia port (port 31 is reserved and should not be used). The 4 bytes can be regarded as a sequence of 32 bits. The most significant bit in byte 1 (the first byte sent to embedded controller) is bit 31. The least significant bit of byte 4 (the last byte sent) is bit 0. 5-8 Rx Utopia port enable 00000000H Every bit of the 4 bytes enables a Utopia Rx port (MSB byte first, LSB byte last). 0: Disable the port; 1: Enable the port The meaning of this parameter is similar to the Utopia Tx port enable field. See above. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack IMAOS04_SLAVE Description 0: OK; 1: Invalid parameter (length of the command is incorrect); Others: Internal error. The chip should be reset. 68 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-58 GetVersionInfo Command (Encoding: 22H) Command Parameters No. Command Reply 1 2 3 Ack SW_ver_majority SW_ver_minority Byte Sequence Reply Name 1 Ack Description 0: OK; Others: Internal error. The chip should be reset. Note: If Ack is not equal to 0, values for the following fields will not be returned. 2 3 1. For IMAOS04, (1) SW_ver_majority SW_ver_minority The integer part of the version. For example, if the current version is 2.12, the returned value will be 2. The fractional part of the version. For example, if the current version is 2.12, the returned value will be 12. the returned value is an odd number. For IMAOS04_Slave, the returned value is an even number. IMAOS04_SLAVE 69 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Table-59 GroupInitial Command (Encoding: 23H) Command Parameters 1 2 3 4-5 Group ID Tx Utopia port Rx Utopia port Max delay compensation value Byte Sequence Parameter Name Default Description 1 Group ID NA The physical group ID (0~3). The Group ID follows the IMA ID of the Master Side. Note that the IMA ID of the Master Side should not exceed 3. 2 Tx Utopia port 1FH 0~30 The Utopia port address for data transmit. Port 31 is reserved and should not be used. Note: The upper 3 bits are Don't Care. 3 Rx Utopia port 1FH 0~30 The Utopia port address for data receive. Port 31 is reserved and should not be used. Note: The upper 3 bits are Don't Care. 4-5 Max delay compensation value NA 0~1024 cells This is the maximum cells delay that can be tolerated. This value is constrained by the size of the external SRAM and it shall be no more than 1024 cells. Refer to 3.4 SRAM Interface. Note: If the value exceeds 1024, IMAOS_Slave will work improperly. Command Reply 1 Ack Byte Sequence Reply Name 1 Ack IMAOS04_SLAVE Description 0: OK; 1: Invalid parameter; Others: Internal error. The chip should be reset. 70 December 8, 2003 IDT82V2604 9 JTAG TEST ACCESS PORT 9.1 TAP BUS SIGNALS Inverse Multiplexing for ATM signal that resets all flip-flops of TAP asynchronously. 9.2 Meet the IEEE standard [13] which requires at least EXTEST, BYPASS, IDCODE and SAMPLE instructions are implemented. The IDT82V2604 identification code is 004B8067 hexadecimal. The interface from the board to the on-chip Test Access Port is the TAP bus, which consists of five signals: ! The standard bus: TDI, TDO, TCK, TMS. ! TRST: Test reset. Reset the TAP controller. The signal is specified as optional in the IEEE spec. TRST is an active low JTAG TEST ACCESS PORT INSTRUCTIONS 71 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10 PHYSICAL AND ELECTRICAL CHARACTERISTICS 10.1 ABSOLUTE MAXIMUM RATINGS Table-60 Absolute Maximum Ratings Parameter Min Max Storage temperature -65C +150C Voltage on VDD with reference to GND -0.3V 4.6V Voltage on input pin -0.3V 5.25V Voltage on output pin -0.3V VDD+0.3V Maximum lead temperature for soldering during 10s 230C ESD Performance (HBM) 2000V Latch-up current on any pin 100mA Maximum junction temperature 150C 10.2 D.C. CHARACTERISTICS @ TA= -40 to +85C. Table-61 D.C. Characteristics Parameter Description Min Typ Max Unit Test Conditions 2.97 3.3 3.63 V 0.40 V VDD=min, IOL=4mA or 6mA(1) V VDD=min, IOH= 4mA or 6mA VDD Core Power Supply VOL Output Low Voltage VOH Output High Voltage VT+ Input High Voltage(2) VT- Input Low Voltage 0.83 VTH Input Hysteresis Voltage 0.17 0.65 1.17 V IILPU Input Low Current -20 -55 -200 uA VIL=GND IIL Input Low Current -1 0 +1 uA VIL=GND IIH Input High Current -2 0 +2 uA VIH=+5V IDDOP1 Operating current mA VDD=3.63V, SYSClk=25MHz 2.4 2.0 V V 160 1. The output driving capacity of all the embedded memory output pins are 4mA while the output driving capacity of all the other output pins are 6mA. 2. All the input pins are schmitt-trigger pins. PHYSICAL AND ELECTRICAL CHARACTERISTICS 72 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3 A.C. CHARACTERISTICS @ TA=-40 to +85C, VDD=3.3V10% 10.3.1 OUTPUT LOADING Default load capacitance on output is 50pF. Microprocessor interface and Utopia interface outputs are loaded by 100pF. 10.3.2 SYSTEM CLOCK AND RST SIGNAL TIMING Table-62 System Clock and Reset Timing Parameters Parameter Description Min Max Unit tSYSCLK The system clock cycle time 40 54 ns DSYSCLK The system clock duty cycle 40 60 % tRST The RST pulse width 1 ms tRST RST Figure-13 Reset Signal Timing Diagram PHYSICAL AND ELECTRICAL CHARACTERISTICS 73 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3.3 UTOPIA INTERFACE TIMING Table-63 Utopia Interface Timing Parameters Parameter Description Min Max Unit ftxCLK Utopia Tx interface clock frequency fSYSCLK(1) MHz frxCLK Utopia Rx interface clock frequency fSYSCLK MHz tCLAV TxClav and RxClav valid from rising edge of TxClk and RxClk respectively tUTS TxEnb, TxSOC, TxData and TxAddr to TxClk setup time 6 ns tUTH TxEnb, TxSOC, TxData and TxAddr to TxClk hold time 1 ns tURCO RxClav, RxSOC, RxData valid from rising edge of RxClk 20 20 ns tURS RxAddr, RxEnb to RxClk setup time 6 ns tURH RxAddr, RxEnb to RxClk hold time 1 ns Width of pull-down pulse after TxClav or RxClav is deasserted. 2 ns tP 1. f SYSCLK is the frequency of the system clock the chip uses. tCLAV tCLAV TxClk tP TxClav tUTS tUTH TxEnb, TxSOC, TxData, TxAddr Figure-14 Tx Utopia Interface Timing Diagram tURCO RxClk RxSOC, RxData tURS tURH RxEnb, RxAddr tCLAV RxClav tP tCLAV Figure-15 Rx Utopia Interface Timing Diagram PHYSICAL AND ELECTRICAL CHARACTERISTICS 74 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3.4 LINE INTERFACE TIMING Table-64 Line Interface Timing Parameters Parameter DCK Description The TSCK, TSCCK, RSCK and RSCCK clock duty cycle Min Max Unit 40 60 % fTSCKE1 E1 mode transmit direction clock frequency 8.192 MHz fRSCKE1 E1 mode receive direction clock frequency 8.192 MHz fTSCKT1 T1 mode transmit direction clock frequency 8.192 MHz fRSCKT1 T1 mode receive direction clock frequency 8.192 MHz tFDCO TSD valid from TSCK 20 ns tFS TSF, TSCFS to TSCK set up time; RSD, RSF, RSCFS to RSCK set up time 10 ns tFH TSF, TSCFS to TSCK hold time; RSD, RSF, RSCFS to RSCK hold time 5 ns tFS tFH TSF, TSCFS TSCK, TSCCK tFDCO bit7 TSD bit6 bit5 Figure-16 Line Interface Transmit Timing Diagram tFS tFH RSF, RSCFS RSCK, RSCCK RSD bit7 bit6 bit5 Figure-17 Line Interface Receive Timing Diagram PHYSICAL AND ELECTRICAL CHARACTERISTICS 75 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3.5 MICROPROCESSOR INTERFACE TIMING 10.3.5.1Interface with Motorola CPU (MPM =0) Read Cycle Specification Table-65 Microprocessor Interface Timing Parameter for Motorola CPU Read Cycle Symbol Parameter Min Max Unit tRC Read cycle time 240 ns tDW Valid read signal width 235 ns tRWV RW available time after valid read signal falling edge tRWH RW hold time after valid read signal falling edge tAV 10 135 ns Address available time after valid read signal falling edge 10 tADH Address hold time after valid read signal falling edge tPRD Data propagation delay after valid read signal falling edge tDH Read out data hold time after valid read signal rising edge 5 Recovery time from read cycle 5 tRecovery ns ns 135 ns 205 ns 20 ns ns tRC tRecovery tDW DS+CS tRWH tRWV RW tADH tAV Valid Address A[x:0] tDH tPRD READ D[7:0] Valid Data Figure-18 Microprocessor Interface Timing Diagram for Motorola CPU Read Cycle PHYSICAL AND ELECTRICAL CHARACTERISTICS 76 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Write Cycle Specification Table-66 Microprocessor Interface Timing Parameters for Motorola CPU Write Cycle Symbol Parameter Min Max Unit tWC Write cycle time 240 ns tDW Valid write signal width 235 ns tRWV RW available time after valid write signal falling edge tRWH RW hold time after valid write signal falling edge 10 165 tAV Address available time after valid write signal falling edge tAH Address hold time after valid write signal falling edge tDV Data propagation delay after valid write signal falling edge tDHW ns 10 ns 165 ns 50 Data hold time after valid write signal rising edge tRecovery ns Recovery time from write cycle ns 165 ns 5 ns tRecovery tWC tDW DS+CS tRWH tRWV RW tAH tAV A[x:0] Valid Address tDV tDHW Valid Data Write D[7:0] Figure-19 Microprocessor Interface Timing Diagram for Motorola CPU Write Cycle PHYSICAL AND ELECTRICAL CHARACTERISTICS 77 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3.5.2Interface with Intel CPU (MPM =1) Read Cycle Specification Table-67 Microprocessor Interface Timing Parameter for Intel CPU Read Cycle Symbol Parameter tRC tRDW Min Unit Read cycle time 240 ns Valid read signal width 235 ns tAV Address available time after valid read signal falling edge tAH Address hold time after valid read signal falling edge tPRD Data propagation delay after valid read signal falling edge tDH Read out data hold time after valid read signal rising edge 5 Recovery time from read cycle 5 tRecovery Max 10 ns 135 ns 205 ns 20 ns ns tRC tRecovery tRDW CS+RD tAH tAV A[x:0] Valid Address tDH tPRD READ D[7:0] Valid Data Note: WR should be tied to high Figure-20 Microprocessor Interface Timing Diagram for Intel CPU Read Cycle PHYSICAL AND ELECTRICAL CHARACTERISTICS 78 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM Write Cycle Specification Table-68 Microprocessor Interface Timing Parameters for Intel CPU Write Cycle Symbol Parameter tWC tWRW Min 240 ns Valid write signal width 235 ns Address available time after valid write signal falling edge tAH Address hold time after valid write signal falling edge tDV Data available time after valid write signal falling edge 10 ns 165 ns 50 Data hold time after valid write signal falling edge tRecovery Unit Write cycle time tAV tDHW Max Recovery time from write cycle ns 165 ns 5 ns tRecovery tWC tWRW WR+CS tAH tAV Valid Address A[x:0] tDHW tDV Write D[7:0] Valid Data Note: RD should be tied to high Figure-21 Microprocessor Interface Timing Diagram for Intel CPU Write Cycle PHYSICAL AND ELECTRICAL CHARACTERISTICS 79 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3.6 SRAM INTERFACE TIMING 10.3.6.1Write Cycle Specification Table-69 SRAM Interface Write Cycle Parameters Symbol Description Min Max Unit tWC Write cycle time 40 ns tAS Address set up time 3 tAH Address hold time 1 ns tWP Write pulse width 20 ns tDW Data valid to end of write 7 ns tDH Data hold time 0 ns 20 ns tWC EMA EM_CS tAS tAH tWP EM_WE tDW EMD tDH Valid Data EM_OE Figure-22 SRAM Interface Timing Diagram for Write Cycle PHYSICAL AND ELECTRICAL CHARACTERISTICS 80 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM 10.3.6.2Read Cycle Specification Table-70 SRAM Interface Read Cycle Parameters Symbol Description Min Max Unit tRC Read cycle time 40 ns tAA Address Access time 20 ns tCA EM_CS Access time 20 ns tOA EM_OE Access time 20 tCHZ Delay from disabled EM_CS to data bus high impedance 7 ns tOHZ Delay from disabled EM_OE to data bus high impedance 7 ns tRC EMA tAA tCHZ EM_CS tCA tOHZ tOA EM_OE EM_WE Valid Data EMD Figure-23 SRAM Interface Timing Diagram for Read Cycle PHYSICAL AND ELECTRICAL CHARACTERISTICS 81 December 8, 2003 Glossary Active State -- A link state indicating that the link is ready for transmitting or receiving ATM cells in the specified direction, either Tx or Rx. Each direction may enter active state asynchronously. Anomaly -- Discrepancy between the actual and desired characteristic of an item. An anomaly may or may not affect an item to perform a required function. API -- Application Programming Interface Asymmetrical Configuration -- This is an IMA configuration scheme. In this configuration mode, the physical links that are assigned to an IMA group are not required to be configured in both Tx and Rx directions. That is, some of the physical links may be configured to use both directions while others may only use one direction (Tx or Rx). Asymmetrical Operation -- This is an ATM traffic transfer mode of an IMA group. In this mode, the physical link can be used to transfer data in one direction and does not care the other direction's Tx and Rx state. That is, when the Tx state of end A and Rx state of end B have both entered active state, end A starts to transfer data to end B and end B starts to receive. In this case, end A does not care whether end A's Rx state is active or not and end B does not care whether end B's Tx state is active or not. ATM -- Asynchronous Transfer Mode ATM Layer Cells -- Cells (ATM formatted) that are exchanged between ATM layer and IMA sublayer. It is also called application data. Blocked State -- This is a group state indicating that the group has been inhibited from transiting into OPERATIONAL state for some administrative purposes. Config-Aborted -- This is a group state indicating that the group has rejected the group parameters proposed by the FE IMA group. Common Transmit Clock (CTC) -- This is a configuration where the transmit clocks of all the physical links within an IMA group are derived from the same clock source. Data Round-Robin -- This is the data transfer method IMA used to deliver cells from ATM layer to multiple transmit links within an IMA group, or the data play-out method that the IMA used to form a consecutive cell stream from multiple receive links within an IMA group. Defect -- A defect may be caused by successive anomaly of an item to perform a required function. The defect may or may not lead to maintenance action depending on the results of additional analysis. ES -- Errored Seconds Far End (FE) -- Two communication entities are considered to be two communication ends. Mostly, one is called Near-End (NE) and the other is called Far-End (FE). Filler Cell -- This is a kind of OAM cell used by IMA layer. It is used to fill in the IMA frame when no cells are available at the ATM layer. Thus filler cell is used for cell rate decoupling at IMA sublayer (like idle cell used in TC layer). Group State Machine (GSM) -- This is the state machine that determines the behavior of the IMA group. Group Traffic State Machine (GTSM) -- This state machine controls when to exchange ATM layer cell between the ATM layer and the IMA layer Group Wide Procedure (GWP) -- This refers to the Group Start-up and LASR procedures performed by the IMA unit to synchronize the activation of IMA links within the IMA group. Header Error Check (HEC) -- This is used for checking the correctness of the ATM cell header. Glossary 82 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM ICP Offset -- The ICP cell is used for IMA frame synchronization. The ICP offset is used to tell the receive side the ICP cell's position in an IMA frame and the receive side can make use of this information to figure out the first cell of the frame. ICP Cell -- The ICP cell is a kind of OAM cell. It can be used by the IMA sublayer to delineate the IMA frame. Also, it conveys information about the status or configuration parameters of each end. ICP Stuff -- The ICP stuff is two consecutive ICP cells at the ICP offset position. The ICP stuff is inserted by repeating the ICP cell. The purpose of the ICP stuff is to decrease the IMA data cell rate of fast links at the transmit side. When an ICP stuff is inserted into an IMA frame, the frame length will become M+1, with M being the frame length without ICP stuff. IMA Frame Synchronization Mechanism (IFSM) -- This is a state machine used for receiving IMA frame synchronization. It is an analogy to the cell delineation mechanism defined in ITU-T recommendation I.432. IMA -- Inverse Multiplexing for ATM IMA Frame -- The IMA frame is a cell stream transmitted over IMA links within an IMA group. There are altogether M cells in one IMA frame without ICP stuff. M could be 32, 64, 128 or 256. In each IMA frame, there are one ICP cell, ATM layer cells and IMA Filler cells. The ICP cells occur at the offset position specified in the ICP cell (the offset may be different for different links). IMA Group -- The IMA group is a number of links at one end that are used to establish an IMA virtual link to the other end. IMA Link -- An IMA link is a unidirectional logical link of a physical link's Tx or Rx direction. The IMA link is identified by the value of LID field of the ICP cells carried over that IMA link. Thus a physical link that connects two ends (A and B) may consist of two IMA links, one from A to B and the other from B to A. IMA Sublayer -- The IMA is a sublayer part of the Physical layer and located between the interface specific Transmission Convergence (TC) sublayer and the ATM layer. IMA Virtual Link -- This is a data communication channel between two communication ends (two IMA units) over a number of physical links; These links are also called an IMA group. IMAOS04 -- A downloaded software used when the device is in normal communication. IMAOS04_Slave -- A downloaded software used when the device operates in Slave Mode. It supports the Group Auto Detect function. Independent Transmit Clock (ITC) -- This is a configuration where there is at least one IMA link within an IMA group that has its transmit clock derived from a clock source that is different from that of other IMA links. The IMA transmitter may indicate that it is in the ITC mode even if all of the transmit clocks of the links are derived from the same source. In Group -- This is an event indicating that a link has been configured into an IMA group. Inhibiting -- This represents the action to voluntarily disable the capacity of the group or the link to carry ATM layer cells for reasons other than reported problems. Insufficient-Links -- Group state indicating that the group does not have sufficient links in the Active state to be in the Operational state. LASR -- This stands for Link Addition and Slow Recovery procedure. LCD -- Loss of Cell Delineation defect. The LCD defect is reported when the OCD anomaly persists for the time specified in ITU-T Recommendation I.432 [30]. The LCD defect is cleared when the OCD anomaly has not been detected for the period of time specified in ITU-T Recommendation I.432. LID -- Link Identifier. The LID field in the ICP cell is used to identify an IMA link on which the ICP cells are transmitted. The LID is been used to determine the round-robin order to retrieve cells from the incoming IMA links at the IMA receiver. LIF -- Loss of IMA Frame defect. The LIF defect is the occurrence of persistent OIF anomalies for at least 2 IMA frames. Link -- The term "link" refers to an IMA link in this data sheet, unless the context clearly refers to a physical link. Link Defect -- A link defect is the occurrence of the persistent detection of an anomaly at the Interface Specific Transmission Convergence sublayer. LOS, LOF/OOF, AIS, LOC and LCD defects are examples of link defects reported at the Interface Specific Transmission Convergence sublayer. Glossary 83 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM LODS -- Link Out Of Delay Synchronization defect. The LODS is a link event indicating that the link is not synchronized with the other links within the IMA group. LOF -- Loss Of Frame LOS -- Loss Of Signal LSB -- Least Significant Bit LSI -- Link Stuff Indication LSM -- Link State Machine M -- IMA frame size MIB -- Management Information Base MPU -- MicroProcessor Unit MSB -- Most Significant Bit NE -- Near-End (local end) Not Configured -- This is a group state indicating that the group does not exist yet. Not in Group -- This is used as an event or a state indicating that a link is no longer configured within an IMA group. OAM -- Operations And Maintenance OCD -- Out of Cell Delineation anomaly. As specified in ITU-T Recommendation I.432 [30], an OCD anomaly is reported upon the occurrence of Alpha () consecutive cells with incorrect HEC, and it is no longer reported after detecting Delta () consecutive cells with correct HEC. OIF -- Out of IMA Frame anomaly OOF -- Out Of Frame Operational -- Group state indicating that the group has sufficient links in both Tx and Rx directions to carry ATM layer cells. Physical Link -- This is the link being used by the IMA unit to transmit and receive ATM cells. The IMA unit may use physical links in one or both directions. Prx -- Minimum number of links required to be active in the receive direction for the IMA group to move into the Operational state. Ptx -- Minimum number of links required to be active in the transmit direction for the IMA group to move into the Operational state. RDI -- Remote Defect Indicator RFI -- Remote Failure Indicator Rx -- Receive (side) SES -- Severely Errored Seconds SICP Cell -- Stuff ICP cell. One of the 2 ICP cells comprising a stuff event. Stuff Event -- This is a repetition of an ICP cell over one IMA link to compensate for timing difference with other links within the IMA group. Start-up -- This is a group state indicating that the group is waiting to see the FE in Start-up. Start-up-Ack -- This is a group transitional state, when both groups are in start-up and the FE group parameters have been accepted. Symmetrical Configuration -- This is an IMA group configuration scheme. In this configuration mode, physical links that are assigned to an IMA group are required to be configured in both Tx and Rx directions. Symmetrical Operation -- This is an ATM traffic mode of an IMA group. In this mode, the physical link can be used to transfer data only when the link's NE's Tx and Rx and FE's Tx and Rx are all in active state. Glossary 84 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM TAP bus -- Test Access Port bus TC -- Transmission Convergence TRL -- Timing Reference Link. Tx -- Transmit (side) UAS -- UnAvailable Seconds UAS-IMA -- UnAvailable Seconds for IMA. Interval during which the IMA receiver is declared unavailable. The period of unavailability begins at the onset of 10 continuous SES-IMA, including the first 10 seconds to enter the UAS-IMA condition. The period of unavailability ends at the onset of 10 continuous seconds with no SES-IMA, excluding the last 10 seconds to exit the UAS-IMA condition. Unusable -- This is a link state indicating the link is not in use due to fault, inhibition, etc. Usable -- This is a link state indicating the link is ready to operate in the specified direction, but it is waiting to move to Active. UUS -- UnUsable Seconds. Number of seconds during which the link state is Unusable. Glossary 85 December 8, 2003 Index A StopTestPattern ..........................................................................59 command description ................................................................... 24, 64 command set list and their encoding ..................................................23 Config-Aborted ....................................................................................63 Config-Aborted-FE ..............................................................................63 ConfigDev command ................................................................... 21, 24 ConfigGroupInterFace command .................................................. 9, 30 ConfigGroupPara command ...............................................................28 ConfigGroupWorkMode command .....................................................31 ConfigGSMTimers command .............................................................32 ConfigIFSMPara command ................................................................34 ConfigLoopMode command .................................................... 9, 14, 27 ConfigSlaveFrame command .............................................................67 ConfigTRLLink command ............................................................ 21, 33 ConfigUNILink command ........................................... 9, 10, 14, 21, 38 configure a group ................................................................................60 ConfigUtopiaIF command ....................................................... 9, 26, 68 A.C. characteristics ............................................................................ 73 absolute maximum ratings ................................................................. 72 add links to a group ............................................................................ 61 AddRxLink command ..................................................... 10, 14, 21, 37 AddTxLink command ..................................................... 10, 14, 21, 35 B Blocked-FE ......................................................................................... 63 C command AddRxLink .............................................................. 10, 14, 21, 37 AddTxLink .............................................................. 10, 14, 21, 35 ConfigDev .............................................................................21, 24 ConfigGroupInterFace ............................................................9, 30 ConfigGroupPara ....................................................................... 28 ConfigGroupWorkMode .............................................................. 31 ConfigGSMTimers ...................................................................... 32 ConfigIFSMPara ......................................................................... 34 ConfigLoopMode .............................................................9, 14, 27 ConfigSlaveFrame ...................................................................... 67 ConfigTRLLink ......................................................................21, 33 ConfigUNILink ....................................................9, 10, 14, 21, 38 ConfigUtopiaIF ................................................................9, 26, 68 DeactLink .............................................................................47, 61 DeleteGrp .............................................................................44, 61 DeleteLink ............................................................................46, 61 DeviceInitial ................................................................................ 65 GetConfigPara ............................................................................ 54 GetGroupDelayInfo .................................................................... 49 GetGroupState ........................................................................... 48 GetGrpPerf ................................................................................. 51 GetGrpWorkingPara ................................................................... 55 GetLinkPerf ................................................................................ 52 GetLinkState ............................................................................... 50 GetLinkWorkingPara .................................................................. 56 GetLoopedTestPattern ............................................................... 58 GetVersionInfo .....................................................................59, 69 GroupInitial ................................................................................. 70 InhibitGrp ..............................................................................41, 61 NotInhibitGrp ........................................................................42, 61 RecoverLink .........................................................................45, 61 RestartGrp ............................................................................43, 61 StartGroup ............................................................................39, 61 StartLASR ............................................................................40, 61 StartTestPattern ......................................................................... 57 Index D D.C. characteristics .............................................................................72 deactivate links ...................................................................................61 DeactLink command .................................................................... 47, 61 delete a group .....................................................................................61 delete links ..........................................................................................61 DeleteGrp command .................................................................... 44, 61 DeleteLink command ................................................................... 46, 61 DeviceInitial command ........................................................................65 E errored ICP .........................................................................................62 F failure/alarm signal Blocked-FE .................................................................................63 Config-Aborted ............................................................................63 Config-Aborted-FE ......................................................................63 GR-Timing-Mismatch ..................................................................63 Insufficient-Links .........................................................................63 Insufficient-Links-FE ...................................................................63 LCD .............................................................................................63 LIF ...............................................................................................63 LODS ..........................................................................................63 RFI-IMA .......................................................................................63 Rx-Unusable-FE .........................................................................63 Start-up-FE .................................................................................63 Tx-Unusable-FE ..........................................................................63 FIFO_INT_ENABLE_REG register .....................................................17 86 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM J FIFO_INT_RESET_REG register ....................................................... 17 FIFO_STATE_REG register ............................................................... 17 JTAG & Scan interface ..................................................................8, 71 JTAG instructions ............................................................................... 71 G L G.802 mapping ................................................................................... 11 GetConfigPara command ................................................................... 54 GetGroupDelayInfo command ............................................................ 49 GetGroupState command .................................................................. 48 GetGrpPerf command ........................................................................ 51 GetGrpWorkingPara command .......................................................... 55 GetLinkPerf command ........................................................................ 52 GetLinkState command ...................................................................... 50 GetLinkWorkingPara command ......................................................... 56 GetLoopedTestPattern command ...................................................... 58 GetVersionInfo command ............................................................ 59, 69 global signals ........................................................................................ 4 glossary .............................................................................................. 82 group auto detect master side ................................................................................. 64 slave side ................................................................................... 64 GroupInitial command ........................................................................ 70 GR-Timing-Mismatch ......................................................................... 63 GR-UAS-IMA ...................................................................................... 62 LCD .................................................................................................... 63 LIF ...................................................................................................... 63 line interface ...................................................................................5, 10 external loopback ....................................................................... 14 internal loopback ........................................................................ 14 loopback ..................................................................................... 14 external loopback ............................................................... 14 internal loopback ................................................................ 14 timing clock mode ...................................................................... 14 line interface timing ............................................................................ 75 line interface timing clock mode ......................................................... 14 line interface Work Mode mode0 ........................................................................................ 11 mode1~mode4 ........................................................................... 11 mode11 ...................................................................................... 13 mode12 and mode13 ................................................................. 13 mode14 and mode15 ................................................................. 14 mode5 and mode6 ..................................................................... 13 mode7~mode10 ......................................................................... 13 link backup ......................................................................................... 21 LODS ................................................................................................. 63 loopback ............................................................................................. 14 line interface ............................................................................... 14 Utopia loopback ........................................................................... 9 H HCS_ERR_TC ............................................................................ 52, 62 I IMA frame ........................................................................................... 21 IMA initialization ................................................................................. 60 IMA mode ........................................................................................... 21 IMA operation ..................................................................................... 60 IMAOS04 ...............................................................................15, 18, 64 IMAOS04_Slave ....................................................................15, 18, 64 inhibit a group ..................................................................................... 61 InhibitGrp command .................................................................... 41, 61 INPUT_FIFO_DATA_REG register .................................................... 16 INPUT_FIFO_INTERNAL_STATE_REG register .............................. 18 INPUT_FIFO_LENGTH_REG register ............................................... 16 Insufficient-Links ................................................................................. 63 Insufficient-Links-FE ........................................................................... 63 Intel microprocessor interface timing .................................................. 78 interface JTAG & Scan .............................................................................. 71 JTAG & Scan interface ................................................................. 8 line interface .......................................................................... 5, 10 microprocessor ........................................................................... 15 microprocessor interface .............................................................. 6 SRAM interface ..................................................................... 7, 20 Utopia interface ............................................................................ 9 invalid ICP .......................................................................................... 62 IV-IMA ......................................................................................... 52, 62 Index M mapping G.802 mapping .......................................................................... 11 spaced mapping ......................................................................... 12 master side ........................................................................................ 64 maximum delay tolerance .................................................................. 20 SRAM size ................................................................................. 20 microprocessor interface ................................................................6, 15 microprocessor interface timing Intel ............................................................................................ 78 Motorola ..................................................................................... 76 missing ICP ........................................................................................ 62 mode IMA mode ................................................................................... 21 UNI mode ................................................................................... 21 Motorola microprocessor interface timing ................................................. 76 multi-rate ............................................................................................ 13 N not inhibit a group .............................................................................. 61 NotInhibitGrp command ...............................................................42, 61 87 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM O OCD_TC ...................................................................................... 52, 62 OIF-IMA ....................................................................................... 52, 62 OUTPUT_FIFO_DATA_REG register ................................................ 16 OUTPUT_FIFO_INTERNAL_STATE_REG register .......................... 18 OUTPUT_FIFO_LENGTH_REG register ........................................... 16 RestartGrp command ...................................................................43, 61 RFI-IMA .............................................................................................. 63 Rx-Stuff-IMA ................................................................................52, 62 Rx-Unusable-FE ................................................................................ 63 Rx-UUS-IMA ................................................................................52, 62 Rx-UUS-IMA-FE ..........................................................................52, 62 P S SES-IMA ......................................................................................52, 62 SES-IMA-FE ................................................................................52, 62 slave side ........................................................................................... 64 spaced mapping ................................................................................. 12 SRAM interface ..............................................................................7, 20 SRAM interface timing ....................................................................... 80 SRAM size maximum delay tolerance .......................................................... 20 start up a group .................................................................................. 61 StartGroup command ...................................................................39, 61 StartLASR command ...................................................................40, 61 StartTestPattern command ................................................................ 57 Start-up-FE ........................................................................................ 63 StopTestPattern command ................................................................ 59 stuffing mode ..................................................................................... 21 CTC ............................................................................................ 21 ITC ............................................................................................. 21 performance monitoring ..................................................................... 62 physical and electrical characteristics ................................................ 72 pin description global signals ................................................................................ 4 JTAG & Scan interface ................................................................. 8 line interface ................................................................................. 5 microprocessor interface .............................................................. 6 others ........................................................................................... 8 power supplies and grounds ......................................................... 8 SRAM interface ............................................................................ 7 PMON ................................................................................................. 62 PMON parameters GR-UAS-IMA .............................................................................. 62 HCS_ERR_TC ..................................................................... 52, 62 IV-IMA ................................................................................. 52, 62 OCD_TC .............................................................................. 52, 62 OIF-IMA ............................................................................... 52, 62 Rx-Stuff-IMA ........................................................................ 52, 62 Rx-UUS-IMA ........................................................................ 52, 62 Rx-UUS-IMA-FE .................................................................. 52, 62 SES-IMA .............................................................................. 52, 62 SES-IMA-FE ........................................................................ 52, 62 Tx-Stuff-IMA ........................................................................ 52, 62 Tx-UUS-IMA ........................................................................ 52, 62 Tx-UUS-IMA-FE .................................................................. 52, 62 UAS-IMA .............................................................................. 52, 62 UAS-IMA-FE ........................................................................ 52, 62 power supplies and grounds ................................................................ 8 T T1 ISDN mode ................................................................................... 13 T1 normal mode ................................................................................. 13 timing line interface timing .................................................................... 75 microprocessor interface timing Intel .................................................................................... 78 Motorola ............................................................................. 76 SRAM interface timing ............................................................... 80 Utopia interface timing ............................................................... 74 timing clock mode line interface ............................................................................... 14 timing reference link ........................................................................... 21 TRL .................................................................................................... 21 Tx-Stuff-IMA .................................................................................52, 62 Tx-Unusable-FE ................................................................................. 63 Tx-UUS-IMA .................................................................................52, 62 Tx-UUS-IMA-FE ...........................................................................52, 62 R recover links ....................................................................................... 61 RecoverLink command ................................................................ 45, 61 register FIFO_INT_ENABLE_REG .......................................................... 17 FIFO_INT_RESET_REG ............................................................ 17 FIFO_STATE_REG .................................................................... 17 INPUT_FIFO_DATA_REG ......................................................... 16 INPUT_FIFO_INTERNAL_STATE_REG ................................... 18 INPUT_FIFO_LENGTH_REG .................................................... 16 OUTPUT_FIFO_DATA_REG ..................................................... 16 OUTPUT_FIFO_INTERNAL_STATE_REG ............................... 18 OUTPUT_FIFO_LENGTH_REG ................................................ 16 register description ............................................................................. 16 register list and map ........................................................................... 15 restart a group .................................................................................... 61 Index U UAS-IMA ......................................................................................52, 62 UAS-IMA-FE ................................................................................52, 62 UNI mode ........................................................................................... 21 Utopia interface .................................................................................... 9 Utopia interface timing ....................................................................... 74 Utopia loopback ................................................................................... 9 88 December 8, 2003 IDT82V2604 Inverse Multiplexing for ATM ORDERING INFORMATION IDT XXXXXXX Device Type XX X Process/ Temperature Range Blank Industrial (-40 C to +85 C) BB Plastic Ball Grid Array (PBGA, BB208) 82V2604 Inverse Multiplexing for ATM Data Sheet Document History 10/17/2003 Pages 1, 9, 21, 24, 27, 35, 37, 64, 73, 74 12/08/2008 Page 1 CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-5116 fax: 408-492-8674 www.idt.com The IDT logo is a registered trademark of Integrated Device Technology, Inc. 89 for Tech Support: 408-330-1552 email:TELECOMhelp@idt.com