CX93010-2x UCMxx USB V.92/V.34/V.32bis Controllered Modem with CX20548 SmartDAA Data Sheet DSH-201723D May 22, 2012 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Revision Record Revision A B C D Date 7/2/2008 7/29/2008 7/31/2008 5/22/2012 Comments Initial release. Rev B release Rev C release Rev D release (c) 2008, 2012 Conexant Systems, Inc. All Rights Reserved. Information in this document is provided in connection with Conexant Systems, Inc. (Conexant) products. These materials are provided by Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no responsibility for errors or omissions in these materials. Conexant may make changes to this document at any time, without notice. Conexant advises all customers to ensure that they have the latest version of this document and to verify, before placing orders, that information being relied on is current and complete. Conexant makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Conexant's Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. CONEXANT FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. CONEXANT SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS. Conexant products are not intended for use in medical, lifesaving or life sustaining applications. Conexant customers using or selling Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from such improper use or sale. The following are trademarks of Conexant Systems, Inc.: Conexant and the Conexant C symbol, and SmartDAA. Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. For additional disclaimer information, please consult Conexant's Legal Information posted at www.conexant.com which is incorporated by reference. Conexant Lead-free products are China RoHS Compliant: Reader Response: Conexant strives to produce quality documentation and welcomes your feedback. Please send comments and suggestions to conexant.tech.pubs@conexant.com. For technical questions, contact your local Conexant sales office or field applications engineer. ii 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Contents Document Revision History ......................................................................................................... viii 1. Introduction .......................................................................................................................... 1-1 1.1 1.2 1.3 1.4 1.5 Overview ................................................................................................................................................... 1-1 Features .................................................................................................................................................... 1-4 1.2.1 Modem Features ......................................................................................................................... 1-4 1.2.2 SmartDAA Features .................................................................................................................... 1-5 1.2.3 Applications ................................................................................................................................ 1-6 Technical Overview ................................................................................................................................... 1-6 1.3.1 General Description .................................................................................................................... 1-6 1.3.2 Embedded MCU Firmware ......................................................................................................... 1-6 1.3.3 Operating Modes ........................................................................................................................ 1-7 1.3.3.1 Data/Fax Modes ........................................................................................................... 1-7 1.3.3.2 V.44 Data Compression ................................................................................................ 1-7 1.3.3.3 Synchronous Access Mode (SAM) - Video Conferencing............................................. 1-8 1.3.3.4 Worldwide Operation .................................................................................................... 1-8 1.3.3.5 TAM Mode .................................................................................................................. 1-10 1.3.4 Reference Designs ................................................................................................................... 1-10 Hardware Description.............................................................................................................................. 1-10 1.4.1 CX93010-2x UCMxx USB Modem ............................................................................................ 1-10 1.4.2 Digital Isolation Barrier .............................................................................................................. 1-11 1.4.3 CX20548 SmartDAA 4 Line Side Device .................................................................................. 1-11 Commands .............................................................................................................................................. 1-11 2. Technical Specifications....................................................................................................... 2-1 2.1 2.2 2.3 USB Interface Operation ........................................................................................................................... 2-1 Establishing Data Modem Connections .................................................................................................... 2-1 2.2.1 Telephone Number Directory ...................................................................................................... 2-1 2.2.2 Dialing ......................................................................................................................................... 2-1 2.2.3 Modem Handshaking Protocol .................................................................................................... 2-1 2.2.4 Call Progress Tone Detection ..................................................................................................... 2-1 2.2.5 Answer Tone Detection............................................................................................................... 2-1 2.2.6 Ring Detection ............................................................................................................................ 2-1 2.2.7 Billing Protection ......................................................................................................................... 2-2 2.2.8 Connection Speeds .................................................................................................................... 2-2 2.2.9 Automode ................................................................................................................................... 2-2 Data Mode ................................................................................................................................................ 2-3 2.3.1 Speed Buffering (Normal Mode) ................................................................................................. 2-3 2.3.2 Flow Control ................................................................................................................................ 2-3 2.3.3 Escape Sequence Detection....................................................................................................... 2-3 2.3.4 BREAK Detection ....................................................................................................................... 2-3 2.3.5 Telephone Line Monitoring ......................................................................................................... 2-3 DSH-201723D 2012 Conexant Systems, Inc. iii CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.3.6 Fall Forward/Fallback (V.92/V.90/V.34/V.32bis/V.32) ................................................................. 2-3 2.3.7 Retrain ........................................................................................................................................ 2-4 2.3.8 Programmable Inactivity Timer ................................................................................................... 2-4 V.92 Features (V.92 Model) ...................................................................................................................... 2-4 2.4.1 Modem-on-Hold .......................................................................................................................... 2-4 2.4.2 Quick Connect ............................................................................................................................ 2-4 2.4.3 PCM Upstream ........................................................................................................................... 2-5 Error Correction and Data Compression ................................................................................................... 2-5 2.5.1 V.42 Error Correction .................................................................................................................. 2-5 2.5.2 MNP 2-4 Error Correction ........................................................................................................... 2-5 2.5.3 V.44 Data Compression .............................................................................................................. 2-5 2.5.4 V.42bis Data Compression ......................................................................................................... 2-5 2.5.5 MNP 5 Data Compression .......................................................................................................... 2-5 Telephony Extensions ............................................................................................................................... 2-6 2.6.1 Line In Use Detection.................................................................................................................. 2-6 2.6.2 Extension Pickup Detection ........................................................................................................ 2-6 2.6.3 Remote Hangup Detection.......................................................................................................... 2-6 Fax Class 1, Fax Class 1.0, and Fax Class 2 Operation ........................................................................... 2-6 Caller ID .................................................................................................................................................... 2-7 Worldwide Country Support ...................................................................................................................... 2-7 Diagnostics ............................................................................................................................................... 2-8 2.10.1 Commanded Tests ..................................................................................................................... 2-8 Low Power Stop Mode .............................................................................................................................. 2-8 3. Hardware Interface............................................................................................................... 3-1 3.1 3.2 3.3 3.4 CX93010-2x UCMxx USB Modem Hardware Pins and Signals ................................................................ 3-1 3.1.1 General ....................................................................................................................................... 3-1 3.1.1.1 USB Interface ............................................................................................................... 3-1 3.1.1.2 LED Interface ................................................................................................................ 3-1 3.1.1.3 LSD Interface (Through DIB) ........................................................................................ 3-1 3.1.1.4 Call Progress Speaker Interface ................................................................................... 3-1 3.1.1.5 Serial EEPROM Interface ............................................................................................. 3-1 3.1.2 CX93010-2x Signal Interface, Pin Assignments, and Signal Definitions ..................................... 3-2 CX20548 LSD Hardware Pins and Signals ............................................................................................... 3-7 3.2.1 General ....................................................................................................................................... 3-7 3.2.1.1 Host Side Device (HSD) Interface (Through DIB) ......................................................... 3-7 3.2.1.2 Power and Ground........................................................................................................ 3-7 3.2.1.3 Telephone Line Interface .............................................................................................. 3-7 3.2.1.4 Voltage References ...................................................................................................... 3-7 3.2.1.5 General Purpose Input/Output ...................................................................................... 3-7 3.2.2 Pin Assignments and Signal Definitions...................................................................................... 3-8 Electrical and Environmental Specifications ............................................................................................ 3-12 3.3.1 Operating Conditions, Absolute Maximum Ratings, and Power Requirements ........................ 3-12 Crystal Specifications .............................................................................................................................. 3-14 4. Package Dimensions ........................................................................................................... 4-1 5. Recommended QFN Surface Mount Land Patterns ............................................................ 5-1 6. USB General Operation ....................................................................................................... 6-1 6.1 iv Descriptors ................................................................................................................................................ 6-1 6.1.1 Device Descriptor ....................................................................................................................... 6-1 6.1.2 Configuration Descriptor ............................................................................................................. 6-3 6.1.3 Interface Descriptor .................................................................................................................... 6-4 6.1.4 Endpoint Descriptor .................................................................................................................... 6-5 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 6.1.5 6.1.6 DSH-201723D Enumeration ............................................................................................................................... 6-6 Endpoints .................................................................................................................................... 6-6 2012 Conexant Systems, Inc. v CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Figures Figure 1-1. UCMxx USB Modem Simplified Interface Diagram .................................................................................. 1-3 Figure 1-2. UCMxx USB Modem Major Interfaces ..................................................................................................... 1-3 Figure 3-1. CX93010-2x UCMxx USB Modem Hardware Signals .............................................................................. 3-2 Figure 3-2. CX93010-2x UCMxx USB Modem 20-Pin QFN Pin Signals .................................................................... 3-3 Figure 3-3. CX20548 LSD Hardware Interface Signals .............................................................................................. 3-8 Figure 3-4. CX20548 LSD 16-Pin QFN Pin Signals ................................................................................................... 3-9 Figure 4-1. Package Dimensions for 20-Pin QFN, Punch Style ................................................................................. 4-2 Figure 4-2. Package Dimensions for 20-Pin QFN, Sawn Style .................................................................................. 4-3 Figure 4-3. Package Dimensions for 16-Pin QFN, Punch Style ................................................................................. 4-5 Figure 4-4. Package Dimensions for 16-Pin QFN, Sawn Style ................................................................................ 4-6 Figure 5-1. Recommended Surface Mount Land Pattern for 20-Pin QFN .................................................................. 5-1 Figure 5-2. Recommended Surface Mount Land Pattern for 16-Pin QFN .................................................................. 5-2 Tables Table 1-1. UCMxx USB Modem Ordering Information ............................................................................................... 1-2 Table 1-2. Default Countries Supported ..................................................................................................................... 1-8 Table 2-1. +MS Command Automode Connectivity ................................................................................................... 2-2 Table 3-1. CX93010-2x UCMxx USB Modem 20-Pin QFN Pin Signals ..................................................................... 3-3 Table 3-2. CX93010-2x UCMxx USB Modem Pin Signal Definitions ......................................................................... 3-4 Table 3-3. CX93010-2x UCMxx USB Modem I/O Type Definitions ............................................................................ 3-5 Table 3-4. CX93010-2x UCMxx USB Modem DC Electrical Characteristics .............................................................. 3-6 Table 3-5. CX20548 LSD 16-Pin QFN Pin Signals .................................................................................................... 3-9 Table 3-6. CX20548 LSD Hardware Signal Definitions ............................................................................................ 3-10 Table 3-7. CX20548 LSD GPIO DC Electrical Characteristics ................................................................................. 3-11 Table 3-8. CX20548 LSD AVDD and DVDD DC Electrical Characteristics .............................................................. 3-11 Table 3-9. Operating Conditions .............................................................................................................................. 3-12 Table 3-10. Absolute Maximum Ratings .................................................................................................................. 3-12 Table 3-11. Current and Power Requirements ......................................................................................................... 3-13 Table 3-12. Crystal Specifications ............................................................................................................................ 3-14 Table 4-1. Package Dimensions for 20-Pin QFN Punch and Sawn Styles ................................................................ 4-1 Table 4-2. Package Dimensions for 16-Pin QFN Punch and Sawn Styles ................................................................. 4-4 Table 6-1. Device Descriptors .................................................................................................................................... 6-2 Table 6-2. Configuration Descriptors .......................................................................................................................... 6-3 Table 6-3. Interface Descriptors ................................................................................................................................. 6-4 Table 6-4. Endpoint Descriptors ................................................................................................................................. 6-5 Table 6-5. Endpoints .................................................................................................................................................. 6-6 vi 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA DSH-201723D 2012 Conexant Systems, Inc. vii CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Document Revision History viii 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA This page is intentionally blank. DSH-201723D 2012 Conexant Systems, Inc. ix CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1. Introduction 1.1 Overview The Conexant UCMxx USB V.92 Controllered Modem supports V.92 analog data modem operation with V.44 data compression and supports 14.4 kbps fax modem operation. In addition, the modem supports remote telephone answering machine (TAM) and USB host interface operation. Table 1-1 lists the ordering information. The modem operates with PSTN telephone lines worldwide. The UCMxx Modem is CDC-compliant and is supported by Microsoft CDC modem drivers. The UCMxx Modem device set, consisting of a CX93010-2x USB V.92 Modem in a 20pin QFN and a CX20548 SmartDAA LSD in a 16-pin QFN, supports data/fax/TAM operation with hardware-based modem controller, digital signal processing, and DAA/telephone line interface functions (Figure 1-1and Figure 1-2). The UCMxx Modem is compatible with both USB 1.1 and USB 2.0 host controllers and hubs. This device can send and receive serial data at the maximum 12 Mbps rate. Conexant's SmartDAA technology (patent pending) eliminates the need for a costly analog transformer, relays, and opto-isolators typically used in discrete DAA (Data Access Arrangement) implementations The SmartDAA architecture also simplifies product implementation by eliminating the need for country-specific board configurations enabling worldwide homologation of a single modem board design and a single bill of materials (BOM). The SmartDAA system-powered DAA operates reliably without drawing power from the line, unlike line-powered DAAs which operate poorly when line current is insufficient due to long lines or poor line conditions. Enhanced features, such as monitoring of local extension status without going off-hook, are also supported. Incorporating Conexant's proprietary Digital Isolation Barrier (DIB) design (patent pending) and other innovative DAA features, the SmartDAA architecture simplifies application design, minimizes layout area, and reduces component cost. DSH-201723D 2012 Conexant Systems, Inc. 1-1 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 1-1. UCMxx USB Modem Ordering Information Model/Order/Part Numbers Marketing Name Device Set Order No. UCM92(EM) UCM34(EM) UCM32bis(EM) UCM92(PC) DS92-UCM-21Z DS34-UCM-22Z DS32-UCM-23Z DS56-L931-21Z UCMxx USB Modem [20-Pin QFN] Part No. CX93010-21Z CX93010-22Z CX93010-23Z CX93010-21Z Supported Functions Line Side Device (LSD) [16-Pin QFN] Part No. V.92, V.90 Data V.34 Data V.32bis Data CX20548-11Z (Note 3) CX20548-11Z (Note 3) CX20548-11Z (Note 3) CX20548-11Z (Note 3) Y -- -- Y Y Y -- Y Y Y Y Y Fax Class 1 / Class 2, TAM, Worldwide DAA Y Y Y Y Notes: 1. Supported functions (Y = Supported; -- = Not supported). 2. All devices are lead-free (Pb-free) and RoHS-compliant. These devices are compatible with leaded reflow processes. 3. Device is marked 20548-A on the package The CX93010-2x USB Modem integrates modem controller (MCU), modem data pump (MDP), ROM, RAM, and SmartDAA system side device (SSD) functions onto a single die. Low profile, small QFN packages and reduced voltage operation with low power consumption make this device set an ideal solution for V.92 modem USB adapters. The modem operates by executing firmware from internal ROM and RAM. Customized modem firmware and added/modified country profiles can be executed from internal SRAM or serial EEPROM. In V.92 and V.90 data modes, the modem can receive data at speeds up to 56 kbps from a digitally connected V.92-compatible central site modem. A V.92 modem takes advantage of the PSTN which is primarily digital except for the client modem to central office local loop and are ideal for applications such as remote access to an Internet Service Provider (ISP), on-line service, or corporate site. In this mode, the modem can transmit data at speeds up to V.34 rates. In V.34 data mode, the modem operates at line speeds up to 33.6 kbps. In V.32bis data mode, the modem operates at lines speeds up to 14.4 kbps. Data compression (V.44/V.42bis/MNP 5) and error correction (V.42/MNP 2-4) modes are supported to maximize data throughput and data transfer integrity. V.44 is a more efficient data compression than V.42bis that significantly increases downstream throughput thus reducing the download time for the types of files associated with Internet use, such as Web pages and uncompressed files such as graphics, image, audio, and document files. V.44 data compression can achieve compression rates of more than 25% over V.42bis. Typical compression ratio for V.44 on Web type data is approximately 6-1 resulting in overall effective data throughput rate up to 300 kbps for a 56 kbpsconnection. V.44 data compression is not limited to the DTE rate since USB operates at 12 Mbps. Non-error-correcting mode is also supported. In V.22bis fast connect mode, the modem can connect at 2400 bps with a very short training time, which is very efficient for small data transfers. Fax Group 3 send and receive rates are supported up to 14.4 kbps with T.30 protocol. V.80 synchronous access mode supports host-controlled communication protocols, e. g., H.324 video conferencing. In TAM mode, enhanced 2-bit or 4-bit per sample coding schemes at 8 kHz sample rate provide flexible format compatibility and allows efficient digital storage of voice/audio. 1-2 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Also supported are 8-bit A-law, -law, and linear coding and IMA 4-bit ADPCM coding. This mode supports applications such as digital telephone answering machine, voice annotation, and recording from and playback to the telephone line. In-band digital call progress enables the user to hear the call progress during modem negotiation. This software-enhanced feature eliminates several external components including an amplifier and a digital speaker. In-band digital call progress contributes to lower BOM cost and smaller PCB size. Figure 1-1. UCMxx USB Modem Simplified Interface Diagram CX93010-2x UCMxx USB V.92 Modem (20-Pin QFN) USB CX20548 SmartDAA Line Side Device (LSD) (16-Pin QFN) Digital Isolation Barrier (DIB) Telephone Line Interface Discrete Components TIP RING TELEPHONE LINE Figure 1-2. UCMxx USB Modem Major Interfaces DAA Hardware CX93010-2x UCMxx USB V.92 Modem (20-Pin QFN) SmartDAA Interface CX20548 SmartDAA Line Side Device (LSD) (16-Pin QFN) Digital Isolation Barrier (DIB) Filter Components Line Side DIB Interface (LSDI) Codec Telephone Line Interface Telephone Line Interface Discrete Components TELEPHONE LINE TIP RING USB Microcontroller Unit (MCU) Modem Data Pump (MDP) Digital Speaker Circuit (Optional) SOUNDUCER Serial EEPROM 2Kb (256 x 8) to 256KB (32K x 8) (Optional) RAM ROM LEDs DSH-201723D 2012 Conexant Systems, Inc. 1-3 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1.2 Features 1.2.1 Modem Features 1-4 Full speed (12 MHz) USB interface device implementation Suspend/Resume Vendor specific descriptions Bus powered USB device Compatible with USB 2.0 Data modem ITU-T V.92 (V.92 model) Modem-on-Hold (MOH) Quick connect (QC) PCM upstream V.90 (V.92 model) V.34 (V.92 model) V.32bis, V.32, V.22bis, V.22, V.23, and V.21, Bell 212A and Bell 103 V.22bis fast connect V.250 and V.251 commands V.80 Synchronous Access Mode Data compression and error correction V.44, V.42bis, and MNP 5 data compression V.42 LAPM and MNP 2-4 error correction Fax modem send and receive rates up to 14.4 kbps V.17, V.29, V.27 ter, and V.21 channel 2 EIA/TIA 578 Class 1, T.31 Class 1.0, and Class 2 Interfaces to optional serial EEPROM Data/Fax/Voice call discrimination Hardware-based modem controller Hardware-based digital signal processor (DSP) Worldwide operation Complies to TBR21 and other country requirements On-hook and/or off-hook Caller ID detection for selected countries Call progress, blacklisting Internal ROM includes default values for 63 countries Additional modified country profiles can be stored in internal SRAM or optional serial EEPROM In-band digital call progress Caller waiting detection Caller ID detect On-hook Caller ID detection Off-hook Call Waiting Caller ID detection during data mode when connected to V.92 server 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1.2.2 SmartDAA Features DSH-201723D Modem customization available through patch code that can be stored in optional serial EEPROM or internal SRAM Telephony/TAM V.253 commands 2-bit and 4-bit ADPCM, 4-bit IMA ADPCM, 8-bit and 16-bit linear PCM, and 8-bit -law and A-law PCM coding 8 kHz sample rate Concurrent DTMF, ring, and Caller ID detection Flow control and speed buffering Automatic format/speed sensing Asynchronous data LED driver outputs +5V to +3.3V voltage regulators on-chip +3.3V to +1.2V voltage regulators on-chip System compatibility - CDC-compliant systems Microsoft Windows 98SE, Windows ME, Windows 2000 and Windows XP operating systems; Linux operating systems Macintosh computers and Sun workstations Thin packages support low profile designs CX93010-2x USB Modem in 20-pin QFN CX20548 LSD in 16-pin QFN Selectable 28.224 MHz or 27.000 MHz frequency of operation +3.3V operation Typical power use: 435 mW (operating) System side powered DAA operates under poor line current supply conditions Ring detection Line polarity reversal detection Line current loss detection Pulse dialing Line-in-use detection during on-hook operation Remote hang-up detection for efficient call termination Extension pickup detection Call waiting detection Digital PBX line protection Meets worldwide DC VI masks requirements 2012 Conexant Systems, Inc. 1-5 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1.2.3 Applications V.92 modem USB adapters Embedded systems Gaming devices Remote monitoring and data collection systems 1.3 Technical Overview 1.3.1 General Description The UCMxx USB Device Set provides the processing core for a complete system design featuring data/fax modem, and remote TAM. Modem operation, including dialing, call progress, telephone line interface, TAM interface, and host interface functions are supported and controlled through the V.250, V.251, and V.253-compatible command set. The modem hardware connects to the host PC via a USB connection. The OEM adds a crystal circuit, serial EEPROM, telephone line interface, and other discrete components as required by the modem model, and a Microsoft CDC-compliant modem driver to complete the system. The modem hardware connects to the host via a USB interface. The OEM adds a crystal circuit, DIB components, telephone line interface, optional external serial EEPROM, and other supporting discrete components as required by the application to complete the system. Customized modem firmware can be supported by the use of serial EEPROM (256 to 32 KB). To support country profile addition or modification, external serial EEPROM (256 to 32 KB) can be installed. Customized code can include OEM-defined commands, i.e., identification codes (I3), identifier string (I4), manufacturer identification (+GMI), model identification (+GMM), and revision identification (+GMR), as well as code modification. 1.3.2 Embedded MCU Firmware Embedded MCU firmware performs processing of general modem control, command sets, data modem, error correction and data compression (ECC), fax class 1, fax class 1.0, fax class 2, voice/audio/TAM, worldwide, V.80, and USB host interface functions. MCU firmware can be customized to include OEM-defined commands, i.e., identification codes (I3), identifier string (I4), manufacturer identification (+GMI), model identification (+GMM), and revision identification (+GMR), as well as code modification. 1-6 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1.3.3 1.3.3.1 Operating Modes Data/Fax Modes Data modem modes perform complete handshake and data rate negotiations. Using modem modulations to optimize modem configuration for line conditions, the modem can connect at the highest data rate that the channel can support from 56 kbps down to 2400 bps with automatic fallback. In V.92/V.90 data modem mode (V.92 model), the modem can receive data from a digital source using a V.92-compatible central site modem at line speeds up to 56 kbps. With PCM upstream enabled (V.92 only), data transmission supports sending data at line speeds up to 48 kbps. When PCM upstream is disabled, data transmission supports sending data at line speeds up to V.34 rates. This mode can fallback to full-duplex V.34 mode and to lower rates as dictated by line conditions. The following modes are supported in V.92 models when connected to a V.92compatible server supporting the feature listed. Quick connect: Allows quicker subsequent connections to a server by using stored line parameters obtained during the initial connection. Modem-on-Hold: Allows detection and reporting of incoming phone calls on the PSTN with enabled Call Waiting. If the incoming call is accepted by the user, the user has a pre-defined amount of time of holding the data connection for a brief conversation. The data connection resumes upon incoming call termination. PCM upstream: Boosts the upstream data rates. A maximum of 48 kbps is supported when connected to a V.92 server that supports PCM upstream. In V.34 data modem mode (V.92 model), the modem can operate in 2-wire, full-duplex, asynchronous modes at line rates up to 33.6 kbps. Data modem modes perform complete handshake and data rate negotiations. Using V.34 modulation to optimize modem configuration for line conditions, the modem can connect at the highest data rate that the channel can support from 33600 bps down to 2400 bps with automatic fallback. Automode operation in V.34 is provided in accordance with PN3320 and in V.32bis in accordance with PN2330. All tone and pattern detection functions required by the applicable ITU or Bell standards are supported. In V.32bis data modem mode, the modem can operate at line speeds up to 14.4 kbps. In V.22bis fast connect data mode, the modem can connect at 2400 bps with a very short training time, which is very efficient for small data transfers. In fax modem mode, the modem can operate in 2-wire, half-duplex, synchronous modes and can support Group 3 facsimile send and receive speeds of 14400, 12000, 9600, 7200, 4800, and 2400 bps. Fax data transmission and reception performed by the modem are controlled and monitored through the EIA/TIA-578 Fax Class 1, T.31 Fax Class 1.0, or Fax Class 2 command interface. Full HDLC formatting, zero insertion/deletion, and CRC generation/checking are provided. 1.3.3.2 V.44 Data Compression V.44 provides more efficient data compression than V.42bis that significantly decreases the download time for the types of files associated with Internet use. This significant improvement is most noticeable when browsing and searching the web since HTML text files are highly compressible. (The improved performance amount varies both with the actual format and with the content of individual pages and files.) DSH-201723D 2012 Conexant Systems, Inc. 1-7 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1.3.3.3 Synchronous Access Mode (SAM) - Video Conferencing V.80 Synchronous Access Mode between the modem and the host/DTE is provided for host-controlled communication protocols, e.g., H.324 video conferencing applications. Voice-call-first (VCF) before switching to a videophone call is also supported. 1.3.3.4 Worldwide Operation The modem operates in TBR21-compliant and other countries. Country-dependent modem parameters for functions such as dialing, carrier transmit level, calling tone, call progress tone detection, answer tone detection, blacklisting, caller ID, and relay control are programmable. SmartDAA technology allows a single PCB design and single BOM to be homologated worldwide. Advanced features such as extension pickup detection, remote hang-up detection, line-in-use detection, and digital PBX detection are supported. Country code IDs are defined by ITU-T T.35. Internal ROM includes default profiles for 63 countries including TBR21-compliant profiles. Additional country profiles can be stored in internal SRAM or external serial EEPROM (request additional country profiles from a Conexant Sales Office). Duplicate country profiles stored in internal SRAM or external serial EEPROM will override the profiles in internal RAM firmware. The default countries supported are listed in Table 1-2. Table 1-2. Default Countries Supported Country Argentina Australia Austria Belgium Brazil Bulgaria Canada Chile China Colombia Croatia Cyprus Czech Republic Denmark Egypt Estonia Finland France Germany Greece Hong Kong Hungary Iceland India Indonesia 1-8 Country Code 7 9 0A 0F 16 1B 20 25 26 27 FA 2D 2E 31 36 F9 3C 3D 42 46 50 51 52 53 54 Call Waiting Tone Detection (CW) Supported X X X X X X X X X X X X X X X X X X X X X X X X X 2012 Conexant Systems, Inc. On-Hook Type 1 Caller ID (CID) Supported X X X X X X X X X X Off-Hook Type 2 Caller ID (CID2) Supported X X X X X X X X X X X X X X X X X X X X X X X X X DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 1-2. Default Countries Supported (Continued) Country Ireland Israel Italy Japan Korea Kuwait Lebanon Luxembourg Malaysia Mexico Morocco Netherlands New Zealand Norway Pakistan Philippines Poland Portugal Romania Russia Saudi Arabia Senegal Singapore Slovakia Slovenia South Africa Spain Sri Lanka Sweden Switzerland Taiwan Thailand Tunisia Turkey UK United Arab Emirates Uruguay USA Reserved DSH-201723D Country Code 57 58 59 00 61 62 64 69 6C 73 77 7B 7E 82 84 89 8A 8B 8E B8 98 99 9C FB FC 9F A0 A1 A5 A6 FE A9 AD AE B4 B3 B7 B5 FD Call Waiting Tone Detection (CW) Supported X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 2012 Conexant Systems, Inc. On-Hook Type 1 Caller ID (CID) Supported X X X X X X X X X X X X X Off-Hook Type 2 Caller ID (CID2) Supported X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 1-9 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1.3.3.5 TAM Mode TAM Mode features include 2-bit/4-bit ADPCM, 4-bit IMA ADPCM, 8-bit and 16-bit linear PCM, and 8-bit -law and A-law PCM coding at 8 kHz sample rate. Tone detection/ generation, call discrimination, and concurrent DTMF detection are also supported. TAM Mode is supported by four submodes: 1.3.4 Online Voice Command Mode supports connection to the telephone line. Voice Receive Mode supports recording voice or audio data input from the telephone line. Voice Transmit Mode supports playback of voice or audio data to the telephone line. Full-duplex Receive and Transmit Mode. Reference Designs Data/fax/TAM reference design for an external modem is available to minimize application design time, reduce development cost, and accelerate market entry. The part number for this design is: CZ-9Z-NR0226. A design package is available in electronic form. This package includes schematics, bill of materials (BOM), vendor part list (VPL), board layout files in Gerber format, and complete documentation. 1.4 Hardware Description SmartDAA technology eliminates the need for a costly analog transformer, relays, and opto-isolators that are typically used in discrete DAA implementations. The programmable SmartDAA architecture simplifies product implementation in worldwide markets by eliminating the need for country-specific components. 1.4.1 CX93010-2x UCMxx USB Modem The CX93010-2x UCMxx USB Modem, packaged in a 20-pin QFN, includes a USB interface, Microcontroller (MCU) (controllered modem only), a Modem Data Pump (MDP), 256 KB internal ROM, 20 KB internal RAM, and SmartDAA interface functions. The UCMxx USB Modem performs the command processing and host interface functions. The crystal frequency is 28.224 or 27.000 MHz. The UCMxx USB Modem optionally connects to an external OEM-supplied serial EEPROM over a dedicated 2-line serial interface. The capacity of the EEPROM can be 256 bytes up to 32 KB. The EEPROM can hold information such as firmware configuration customization, country code parameters, and cellular drivers. The UCMxx USB Modem performs telephone line signal modulation/demodulation in a hardware digital signal processor (DSP) which reduces computational load on the host processor. The SmartDAA 4 Interface communicates with, and supplies power and clock to, the LSD through the DIB. 1-10 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 1.4.2 Digital Isolation Barrier The OEM-supplied Digital Isolation Barrier (DIB) electrically DC isolates the UCMxx USB Modem from the LSD and telephone line. The UCMxx USB Modem is connected to a fixed digital ground and operates with standard CMOS logic levels. The LSD is connected to a floating ground and can tolerate high voltage input (compatible with telephone line and typical surge requirements). The DIB transformer couples power, clock, and data from the UCMxx USB Modem to the LSD over two lines. The DIB data channel supports bidirectional half-duplex serial transfer of data, control, and status information. 1.4.3 CX20548 SmartDAA 4 Line Side Device The CX20548 SmartDAA 4 Line Side Device (LSD) includes a Line Side DIB Interface, a coder/decoder (codec), and a Telephone Line Interface (TLI). The Line Side DIB Interface communicates with, and receives power and clock from, the SmartDAA 4 interface in the host side device (HSD) through the DIB transformer. The clock signal passing through the transformer is rectified in the LSD and filtered using external capacitors. Information is transferred between the LSD and the HSD through the DIB transformer using pulse width modulation The TLI integrates DAA and direct telephone line interface functions and connects directly to the line TIP and RING pins, as well as to external line protection components. Direct LSD connection to TIP and RING allows real-time measurement of telephone line parameters, such as the telephone central office (CO) battery voltage, individual telephone line (copper wire) resistance, and allows dynamic regulation of the off-hook TIP and RING voltage and total current drawn from the central office (CO). This allows the modem to maintain compliance with U.S. and worldwide regulations. 1.5 Commands The modem supports data modem, fax class 1, 1.0, or 2 modem, TAM, V.80 commands, and S Registers in accordance with modem model options. See Doc. REM-201692 for a description of the commands. Data Mode Operation. Data functions operate in response to the AT commands when +FCLASS=0. Default parameters support U.S./Canada operation. Fax Mode Operation. Facsimile functions operate in response to fax class 1 commands when +FCLASS=1, to fax class 1.0 commands when +FCLASS=1.0, or to fax class 2 commands when +FCLASS=2. DSH-201723D 2012 Conexant Systems, Inc. 1-11 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA This page is intentionally blank. 1-12 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2. Technical Specifications 2.1 USB Interface Operation See Chapter 6. 2.2 Establishing Data Modem Connections 2.2.1 Telephone Number Directory The modem supports four telephone number entries in a directory that can be saved in an optional serial NVRAM. Each telephone number can be up to 32 characters (including the command line terminating carriage return) in length. A telephone number can be saved using the &Zn=x command, and a saved telephone number can be dialed using the DS=n command. 2.2.2 Dialing DTMF Dialing. DTMF dialing using DTMF tone pairs is supported in accordance with ITU-T Q.23. The transmit tone level complies with Bell Publication 47001. Pulse Dialing. Pulse dialing is supported in accordance with EIA/TIA-496-A. Blind Dialing. The modem can blind dial in the absence of a dial tone if enabled by the X0, X1, or X3 command. 2.2.3 Modem Handshaking Protocol If a tone is not detected within the time specified in the S7 register after the last digit is dialed, the modem aborts the call attempt. 2.2.4 Call Progress Tone Detection Ringback, equipment busy, congested tone, warble tone, and progress tones can be detected in accordance with the applicable standard. 2.2.5 Answer Tone Detection Answer tone can be detected over the frequency range of 2100 40 Hz in ITU-T modes and 2225 40 Hz in Bell modes. 2.2.6 Ring Detection A ring signal can be detected from a TTL-compatible 15.3 Hz to 68 Hz square wave input. DSH-201723D 2012 Conexant Systems, Inc. 2-1 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.2.7 Billing Protection When the modem goes off-hook to answer an incoming call, both transmission and reception of data are prevented for 2 seconds (data modem) or 4 seconds (fax adaptive answer) to allow transmission of the billing tone signal. 2.2.8 Connection Speeds The modem functions as a data modem when the +FCLASS=0 command is active. Line connection can be selected using the +MS command. The +MS command selects modulation, enables/disables automode, and selects minimum and maximum line speeds (Table 2-1). 2.2.9 Automode Automode detection can be enabled by the +MS command to allow the modem to connect to a remote modem in accordance with draft PN-3320 for V.34 (Table 2-1). Table 2-1. +MS Command Automode Connectivity Modulation <carrier> Bell 103 Bell 212 V.21 V.22 V.22bis V.23 V.32 V.32bis 1 V.34/V.90 upstream B103 B212 V21 V22 V22B V23C V32 V32B V34/V90 V.90 downstream 1 V90 V.92 downstream 1 V92 V.92 upstream 1 V92 Possible (<min_rx_rate>, <min_rx_rate>, (<min_tx_rate>), and <max_tx_rate>) Rates (bps) 300 1200 Rx/75 Tx or 75 Rx/1200 Tx 300 1200 2400 or 1200 1200 9600 or 4800 14400, 12000, 9600, 7200, or 4800 33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800, or 2400 56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000, 34667, 33333, 32000, 30667, 29333, 28000 56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000, 34667, 33333, 32000, 30667, 29333, 28000 48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000, 34667, 33333, 32000, 30667, 29333, 28000, 26667, 25333, 24000 Notes: 1. V.92 model. 2-2 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.3 Data Mode Data mode exists when a telephone line connection has been established between modems and all handshaking has been completed. 2.3.1 Speed Buffering (Normal Mode) Speed buffering allows a DTE to send data to, and receive data from, a modem at a speed different than the line speed. The modem supports speed buffering at all line speeds. 2.3.2 Flow Control DTE-to-Modem Flow Control. If the modem-to-line speed is less than the DTE-tomodem speed, the modem supports XOFF/XON or RTS/CTS flow control with the DTE to ensure data integrity. 2.3.3 Escape Sequence Detection The +++ escape sequence can be used to return control to the command mode from the data mode. Escape sequence detection is disabled by an S2 Register value greater than 127. 2.3.4 BREAK Detection The modem can detect a BREAK signal from either the DTE or the remote modem. The \Kn command determines the modem response to a received BREAK signal. 2.3.5 Telephone Line Monitoring GSTN Cleardown (V.90, V.34, V.32bis, V.32). Upon receiving GSTN Cleardown from the remote modem in a non-error correcting mode, the modem cleanly terminates the call. Loss of Carrier (V.22bis and Below). If carrier is lost for a time greater than specified by the S10 register, the modem disconnects (except MNP 10). 2.3.6 Fall Forward/Fallback (V.92/V.90/V.34/V.32bis/V.32) During initial handshake, the modem will fallback to the optimal line connection within V.92/V.90/V.34/V.32bis/V.32 mode depending upon signal quality if automode is enabled by the +MS or N1 command. When connected in V.92/V.90/V.34/V.32bis/V.32 mode, the modem will fall forward or fallback to the optimal line speed within the current modulation depending upon signal quality if fall forward/fallback is enabled by the %E2 command. DSH-201723D 2012 Conexant Systems, Inc. 2-3 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.3.7 Retrain The modem may lose synchronization with the received line signal under poor or changing line conditions. If this occurs, retraining may be initiated to attempt recovery depending on the type of connection. The modem initiates a retrain if line quality becomes unacceptable if enabled by the %E command. The modem continues to retrain until an acceptable connection is achieved, or until 30 seconds elapse resulting in line disconnect. 2.3.8 Programmable Inactivity Timer The modem disconnects from the line if data is not sent or received for a specified length of time. In normal or error-correction mode, this inactivity timer is reset when data is received from either the DTE or from the line. This timer can be set to a value between 0 and 255 seconds by using register S30. A value of 0 disables the inactivity timer. 2.4 V.92 Features (V.92 Model) Modem-on-Hold, quick connect, and PCM upstream are only available in V.92 models when connecting in V.92 data mode. V.92 features are only available when the server called is a V.92 server that supports that particular feature. 2.4.1 Modem-on-Hold The Modem-on-Hold (MOH) function enables the modem to place a data call to the Internet on hold while using the same line to accept an incoming or place an outgoing voice call. This feature is available only with a connection to a server supporting MOH. MOH can be executed through either of two methods: 2.4.2 One method is to enable MOH through the +PMH command. With Call Waiting Detection (+PCW command) enabled, an incoming call can be detected while online. Using a string of commands, the modem negotiates with the server to place the data connection on hold while the line is released so that it can be used to conduct a voice call. Once the voice call is completed, the modem can quickly renegotiate with the server back to the original data call. An alternative method is to use communications software that utilizes the Conexant Modem-on-Hold drivers under Windows PC operating systems. Using this method, the software can detect an incoming call, place the data connection on hold, and switch back to a data connection. Quick Connect The quick connect function enables the modem to shorten the connect time of subsequent calls to a server supporting quick connect. The quick connect feature is supported by the +PQC command. 2-4 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.4.3 PCM Upstream PCM upstream boosts the upstream data rates between the user and ISP to reduce upload times for large files and email attachments. A maximum of 48 kbps upstream rate is supported with PCM upstream enabled, in contrast to a maximum of 31.2 kbps upstream rate with PCM upstream not enabled. PCM upstream is supported by the +PCM command. PCM upstream is disabled by default. 2.5 Error Correction and Data Compression 2.5.1 V.42 Error Correction V.42 supports two methods of error correction: LAPM and, as a fallback, MNP 4. The modem provides a detection and negotiation technique for determining and establishing the best method of error correction between two modems. 2.5.2 MNP 2-4 Error Correction MNP 2-4 is a data link protocol that uses error correction algorithms to ensure data integrity. Supporting stream mode, the modem sends data frames in varying lengths depending on the amount of time between characters coming from the DTE. 2.5.3 V.44 Data Compression V.44 data compression encodes pages and files associated with Web pages more efficiently than V.42bis. These files include WEB pages, graphics and image files, and document files. V.44 can provide an effective data throughput rate up to DTE rate for a 56-kbps connection. The improved performance amount varies both with the actual format and with the content of individual pages and files. 2.5.4 V.42bis Data Compression V.42bis data compression mode, enabled by the %Cn command or S46 register, operates when a LAPM or MNP 10 connection is established. The V.42bis data compression employs a "string learning" algorithm in which a string of characters from the DTE is encoded as a fixed length codeword. Two 2-KB dictionaries are used to store the strings. These dictionaries are dynamically updated during normal operation. 2.5.5 MNP 5 Data Compression MNP 5 data compression mode, enabled by the %Cn command, operates during an MNP connection. In MNP 5, the modem increases its throughput by compressing data into tokens before transmitting it to the remote modem, and by decompressing encoded received data before sending it to the DTE. DSH-201723D 2012 Conexant Systems, Inc. 2-5 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.6 Telephony Extensions The following telephony extension features are supported and can be typically be implemented in designs for software applications to enhance end-user experience: Line In Use detection Extension Pickup detection Remote Hang-up detection The telephony extension features are enabled through the -STE command. The -TTE command can be used to adjust the voltage thresholds for the telephony extension features. 2.6.1 Line In Use Detection The Line In Use Detection feature can stop the modem from disturbing the phone line when the line is already being used. When an automated system tries to dial using ATDT and the phone line is in use, the modem will not go off hook and will respond with the message "LINE IN USE". 2.6.2 Extension Pickup Detection The Extension Pickup Detection feature (also commonly referred as PPD or Parallel phone detection) allows the modem to detect when another telephony device (i.e., fax machine, phone, satellite/cable box) is attempting to use the phone line. This feature can also be used in Telephone Answering Machine applications (TAM). Its main use would be to stop the TAM operation when a phone is picked up. 2.6.3 Remote Hangup Detection The Remote Hangup Detection feature will cause the modem go back on-hook during a data connection when the remote modem is disconnected for abnormal termination reasons (remote phone line unplugged, remote server/modem shutdown. 2.7 Fax Class 1, Fax Class 1.0, and Fax Class 2 Operation Facsimile functions operate in response to fax class 1 commands when +FCLASS=1, to fax class 1.0 commands when +FCLASS=1.0, or to fax class 2 commands when +FCLASS=2. In the fax mode, the on-line behavior of the modem is different from the data (non-fax) mode. After dialing, modem operation is controlled by fax commands. Some AT commands are still valid but may operate differently than in data modem mode. Calling tone is generated in accordance with T.30. 2-6 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.8 Caller ID Both Type I Caller ID (On-Hook Caller ID) and Type II Caller ID (Call Waiting Caller ID) are supported for U.S. and many other countries (see Section 2.9). Both types of Caller ID are enabled/disabled using the +VCID command. Call Waiting Tone detection must be enabled using the +PCW command to detect and decode Call Waiting Caller ID. When enabled, caller ID information (date, time, caller code, and name) can be passed to the DTE in formatted or unformatted form. Inquiry support allows the current caller ID mode and mode capabilities of the modem to be retrieved from the modem. Type II Caller ID (Call Waiting Caller ID) detection operates only during data mode in V.92, V.90, V.34, V.32bis, or V.32. 2.9 Worldwide Country Support Internal modem firmware supports 63 country profiles (see Section 1.3.3.4). These country profiles include the following country-dependent parameters: Dial tone detection levels and frequency ranges. DTMF dialing parameters: Transmit output level, DTMF signal duration, and DTMF interdigit interval. Pulse dialing parameters: Make/break times, set/clear times, and dial codes are programmable Ring detection frequency range. Type I and Type II Caller ID detection are supported for many countries. Contact your local Conexant sales office for additional country support. Blind dialing enabled/disable. Carrier transmit level (through S91 for data and S92 for fax). The maximum, minimum, and default values can be defined to match specific country and DAA requirements. Calling tone is generated in accordance with V.25. Calling tone may be toggled (enabled/disabled) by inclusion of a "^" character in a dial string. It may also be disabled. Frequency and cadence of tones for busy, ringback, congested, warble, dial tone 1, and dial tone 2. Answer tone detection period. Blacklist parameters. The modem can operate in accordance with requirements of individual countries to prevent misuse of the network by limiting repeated calls to the same number when previous call attempts have failed. Call failure can be detected for reasons such as no dial tone, number busy, no answer, no ringback detected, voice (rather than modem) detected, and key abort (dial attempt aborted by user). Actions resulting from such failures can include specification of minimum inter-call delay, extended delay between calls, and maximum numbers of retries before the number is permanently forbidden ("blacklisted"). These country profiles may be altered or customized by modifying the countrydependent parameters. Additional profiles may also be included. Please contact an FAE at the local Conexant sales office if a country code customization is required. DSH-201723D 2012 Conexant Systems, Inc. 2-7 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 2.10 Diagnostics 2.10.1 Commanded Tests Diagnostics are performed in response to &T commands. Analog Loopback (&T1 Command). Data from the local DTE is sent to the modem, which loops the data back to the local DTE. PTT Signal Generation (%TTn Command). Continuous tones or modulation are generated by the DSP and output through the DAA. 2.11 Low Power Stop Mode Stop Mode. The modem enters the low power stop mode when no line connection exists and no host activity occurs for the period of time specified in the USB specification. All modem circuits are turned off in order to reduce consumed power while being able to immediately wake up and resume normal operation. 2-8 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 3. 3.1 Hardware Interface CX93010-2x UCMxx USB Modem Hardware Pins and Signals 3.1.1 3.1.1.1 General USB Interface Differential data plus and data minus signals (USB_DP and USB_DN) interface to the USB port. 3.1.1.2 LED Interface Dedicated LED output signals are provided for Transmit/Receive Data and Off-Hook status. 3.1.1.3 LSD Interface (Through DIB) The DIB interface signals are: 3.1.1.4 DIBP DIBN Call Progress Speaker Interface The call progress speaker interface signal is: Digital speaker output (DSPKOUT); output DSPKOUT is a square wave output in Data/Fax mode used for call progress or carrier monitoring. This output can be optionally connected to a low-cost on-board speaker, e.g., a sounducer, or to an analog speaker circuit. 3.1.1.5 Serial EEPROM Interface A 2-line serial interface to an optional serial EEPROM is supported. The interface signals are: Bidirectional Data input/output (NVMDATA) Clock output (NVMCLK) The EEPROM can hold information such as firmware customization and country code parameters. Data stored in EEPROM takes precedence over the factory default settings. The EEPROM size can range from 2 Kb (256 x 8) to 256 Kb (32K x 8) and must support a clock frequency of at least 400 kHz. For overriding, adding new country profiles, or loading NVRAM patches, the EEPROM size must be larger than 2Kb. The size of the EEPROM device will depend on the number of country profiles added or patch size. DSH-201723D 2012 Conexant Systems, Inc. 3-1 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA The serial EEPROM is required to store the USB device, configuration, interface, and endpoint descriptors. Device descriptors include Vendor ID, Product ID, Device Release Number, Manufacturer Name, Product Name, and Serial Number. Connection to an Atmel AT24C04N-10-2.7 or equivalent is supported. 3.1.2 CX93010-2x Signal Interface, Pin Assignments, and Signal Definitions CX93010-2x Modem hardware interface signals are shown by major interface in Figure 3-1, are shown by pin number in Figure 3-2, and are listed by pin number in Table 3-1. The CX93010-2x Modem hardware interface signals are defined in Table 3-2. Figure 3-1. CX93010-2x UCMxx USB Modem Hardware Signals 18 19 28.224 OR 27.000 MHZ CRYSTAL OR CLOCK OSCILLATOR 20 RESET CIRCUIT 2 IRING_N 1 RES 6 7 DP DN 5 9 LED_DCD LED_OH XTLI XTLO DIBN DIBP RESET# DSPKOUT RINGD VDD_CORE USB_RES USB_DP USB_DN LED_DATA LED_OH CX93010-2x Modem 20-Pin QFN VCC VCC GND PADDLE (GND) FREQUENCY SELECT CIRCUIT 4 12 SERIAL EEPROM 240K +3.3V VDD 14 10 11 17 15 8 3 13 DIGITAL ISOLATION BARRIER (DIB) SPEAKER CIRCUIT +1.2V DECOUPLING +3.3V DECOUPLING +5V (USB_VCC) 16 21 NVMCLK/CLKSEL NVMDATA LPO NOTE: PADDLE (GND), indicated as Pin 21, is a conductive surface on the bottom of the device and must be connected to system side digital ground. 3-2 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA RESET# XTLO XTLI DSPKOUT GND 20 19 18 17 16 Figure 3-2. CX93010-2x UCMxx USB Modem 20-Pin QFN Pin Signals USB_RES 1 15 VDD_CORE RINGD 2 14 LPO VCC 3 13 VCC NVMCLK/CLKSEL 4 12 NVMDATA LED_DATA 5 11 DIBP 8 9 VDD LED_OH 10 7 USB_DN DIBN 6 USB_DP CX93010-2x NOTE: PADDLE (GND) is a conductive surface on the bottom of the device and is indicated as pin 21. Table 3-1. CX93010-2x UCMxx USB Modem 20-Pin QFN Pin Signals Pin No. 1 2 3 4 5 6 7 8 9 10 Signal Name USB_RES RINGD VCC NVMCLK/CLKSEL LED_DATA USB_DP USB_DN VDD LED_OH DIBN Pin No. 11 12 13 14 15 16 17 18 19 20 21 Signal Name DIBP NVMDATA VCC LPO VDD_CORE GND DSPKOUT XTLI XTLO RESET# PADDLE (GND) Note: PADDLE (GND) is a conductive surface on the bottom of the device and is indicated as pin 21. DSH-201723D 2012 Conexant Systems, Inc. 3-3 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 3-2. CX93010-2x UCMxx USB Modem Pin Signal Definitions Label Pin I/O I/O Type System Signal Name/Description XTLI XTLO 18 19 I O Ix Ox Crystal In and Crystal Out. If an external 27 or 28.224 MHz crystal circuit is used instead of an external clock circuit, connect XTLI and XTLO to the external crystal circuit. When an external clock circuit is used, connect the clock signal to XTLI and leave XTLO open. RESET# 20 I Ipu/It Reset. The active low RESET# input resets the CX93010-2x logic, and restores the saved configuration from serial EEPROM or returns the modem to the factory default values if NVRAM is not present. RESET# low holds the modem in the reset state; RESET# going high releases the modem from the reset state. After application of VDD, RESET# must be held low for at least 15 ms after the VDD power reaches operating range. The modem device set is ready to use 25 ms after the low-to-high transition of RESET#. Connect RESET# input to the CX93010-2x XRESET_N pin through 51 . VCC 3, 13 P PWR Digital Supply Voltage. Connect to USB VCC (+5V, filtered). VDD 8 P PWR +3.3 Internal I/O Voltage Filter. Connect to +3.3V decoupling capacitors only. VDD_CORE 15 P PWR +1.2 Internal Core Voltage Filter. Connect to +1.2V decoupling capacitors only. GND 16 G GND Digital Ground. Connect to digital ground (GND). PADDLE (GND) 21 G GND Paddle Ground. Connect to digital ground (GND). LPO 14 I I/O NVMCLK/CLKSEL 4 I/O Low Power Oscillator. Connect to +3.3V through 240 K. Serial EEPROM (NVRAM) Interface Ipu/O2 NVRAM Clock (NVMCLK). NVMCLK output high enables the EEPROM. Connect to EEPROM SCL pin. This signal is multiplexed with the CLKSEL signal. Clock Frequency Select (CLKSEL). Clock frequency is selected by CLKSEL during reset processing. Leave open for 28.224 MHz operation; connect pin to digital ground (GND) through 10 k for 27.000 MHz operation. This signal is multiplexed with the NVMCLK signal. NVMDATA 12 I/O Ipu/O2 LED_OH 9 O Ipu/O8 LED_DATA 5 O Ipu/O8 Data Indicator. Active low. Connect to LED circuit. USB Interface USB_DP USB_DN 6 7 I/O I/O USB_RES 1 I RINGD 2 I 3-4 NVRAM Data. The NVMDATA pin supplies a serial data interface to the EEPROM. Connect to EEPROM SDA pin and to +3.3V through 10 K. LED Interface I/O I/O Off-Hook Indicator. Active low. Connect to LED circuit. USB Port. USB_DP and USB_DN are the differential data plus and data minus signals of the USB port, the upstream differential port. These lines do not have internal pullup resistors. Connect DP and DM to USB_DATAP and USB_DATAM, respectively, through 43 . Connect USB_DM to GND through a 5.1 M resistor. Connect USB_DM to GND through a 5.1 M resistor. Ipd/It Reset. Connect to USB_DATAP through 1.5 K. Wake-on-Ring Circuit Interface Ipd/It Ring Wakeup. Active high input that indicates that a ring has been detected to wake up the UID from suspend mode. Connect to Suspend/Resume and Wake-on-Ring circuit. 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 3-2. CX93010-2x UCMxx USB Modem Pin Signal Definitions (Continued) Label Pin I/O I/O Type DIB Interface DIBN 10 I/O Odpc DIBP 11 I/O Odpc DSPKOUT 17 O Ipd/O2 Signal Name/Description DIB Negative. Provides clock and power to the LSD, and transfers data, control and status information between the SSD and LSD. Connect to DIB transformer primary winding terminal. DIB Positive. Provides clock and power to the LSD and transfers data, control and status information between the SSD and LSD. Connect to DIB transformer primary winding terminal. Speaker Interface Modem Speaker Digital Output. The DSPKOUT digital output reflects the received analog input signal digitized to TTL high or low level by an internal comparator. Typically, connect to a digital call progress speaker circuit. Notes: 1. I/O Types: See Table 3-4. 2. Interface Legend: DIB Digital Isolation Barrier NC No internal pin connection RESERVED = No external connection allowed (may have internal connection). Table 3-3. CX93010-2x UCMxx USB Modem I/O Type Definitions I/O Type Ix/Ox It/O2 Itpd/It I/O, wire Digital input, +3.3V tolerant/ Digital output, 2 mA Description Itpd/O2 Digital input, +3.3V tolerant, 120 k pull down/ Digital output, 2 mA Itpu/It Digital input, +3.3V tolerant, 120 k pull up/ Digital input Itpu/O2 Digital input, +3.3V tolerant, 120 k pull up/ Digital output, 2 mA Digital input, +3.3V tolerant, 120 k pull down/ Digital input Itpu/O8 Digital input, +3.3V tolerant, 120 k pull up/ Digital output, 8 mA Odpc Digital output with adjustable drive, DIB clock and power PWR Power GND Ground NOTES: 1. See DC characteristics in Table 3-4. 2. I/O Type corresponds to the device Pad Type. The I/O column in signal interface tables refers to signal I/O direction used in the application. DSH-201723D 2012 Conexant Systems, Inc. 3-5 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 3-4. CX93010-2x UCMxx USB Modem DC Electrical Characteristics Parameter Min. Typ. Max. Units 0 0 - - 0.8 0.3 *VDD V V 2 0.7 * VDD - - - 3.6 3.6 V V V 0.5 0.3 - - - 0 - 0.4 V IOL = 2 mA 0 - 0.4 V IOL = 8 mA ZINT = 120 2.4 - - VDD V V IOL = -2 mA ZINT = 50 Pull-Up Resistance 2.4 - VDD V IOL = -8 mA Rpu 120 - 500 k Pull-Down Resistance Rpd 120 - 500 Input Voltage Low +3.3V tolerant +3.3V tolerant hysteresis Input Voltage High +3.3V tolerant +3.3V tolerant hysteresis Input Hysteresis +3V hysteresis +3.3V tolerant, hysteresis Output Voltage Low Symbol VIL VIH VH V V V VOL ZINT = 120 ZINT = 50 Output Voltage High Test Conditions VOH k Test Conditions unless otherwise stated: VCC = +5 0.25 VDC; TA = 0C to 70C; external load = 50 pF. 3-6 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 3.2 CX20548 LSD Hardware Pins and Signals 3.2.1 General 3.2.1.1 Host Side Device (HSD) Interface (Through DIB) The DIB interface signals are: 3.2.1.2 DIB Positive (DIBP, pin 14); input/output DIB Negative (DIBN, pin 16); input/output Power and Ground The power and ground signals are: 3.2.1.3 Unregulated Power Output (PWR, pin 15) Regulated Digital Power Output (DVDD, pin 1) Regulated Analog Power Output (AVDD, pin 2) Analog Ground (PADDLE [AGND]); Analog ground Telephone Line Interface The telephone line interface signals are: 3.2.1.4 RING AC Coupled (RAC, pin 4); input TIP AC Coupled (TAC, pin 5); input Electronic Inductor Capacitor (EIC, pin 11) Electronic Inductor Output (EIO, pin 10) Electronic Inductor Feedback (EIF, pin 9) Receive Analog Input (RXI, pin 6); input Transmit Output (TXO, pin 8); output Transmit Feedback (TXF, pin 7); input Voltage References There is one reference voltage pin: 3.2.1.5 Output Middle (Center) Reference Voltage (VC, pin 3); output for decoupling General Purpose Input/Output There is one unassigned general purpose input/output pin: DSH-201723D General Purpose Input/Output (GPIO, pin 13); input/output 2012 Conexant Systems, Inc. 3-7 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 3.2.2 Pin Assignments and Signal Definitions CX20548 LSD hardware interface signals are shown by major interface in Figure 3-3, are shown by pin number in Figure 3-4, and are listed by pin number in Table 3-5. Note: Pin 17 is shown in Figure 3-3 to ensure that the PADDLE is considered when laying out the printed circuit board. The PADDLE is the analog ground pin of the CX20548 device and must be connected to LSD analog ground (AGND_LSD) when the CX20548 is populated in a PCB. CX20548 LSD hardware interface signals are defined in Table 3-6. CX20548 LSD GPIO DC characteristics are specified in Table 3-7. CX20548 LSD AVDD DC characteristics are specified in Table 3-8. Figure 3-3. CX20548 LSD Hardware Interface Signals C850 DIGITAL ISOLATION BARRIER (DIB) RAC 16 DIBN TAC R802 4 R804 5 DIBN C862 14 DIBP DIBP EIC EIO EIF T802 C852 R854 2 TEST AGND_LSD 1 DVDD C830 AGND_LSD 15 2 C870 Electronic Inductor, OffHook, Pulse Dial, and TIP and RING VI Control 11 10 9 CX20548 SmartDAA 4 Line Side Device (LSD) 16-Pin QFN RXI Safety and EMI Protection Telephone Line Connector TIP RING Receive Coupling 6 AGND_LSD TXO TXF Impedance Matching and Transmitter 8 7 PWR+ AVDD VC C828 3 C844 AGND_LSD AGND_LSD 17 GPIO 13 NC PADDLE (AGND) AGND_LSD NOTES: 1. Consult applicable reference design for exact component placement and values, and for layout guidelines. 2. The PADDLE (indicated as Pin 17) is the analog ground pin of the CX20548 device and must be connected to LSD analog ground (AGND_LSD) when the CX20548 is populated in a printed circuit board (PCB). 3-8 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA DIBN PWR DIBP GPIO 16 15 14 13 Figure 3-4. CX20548 LSD 16-Pin QFN Pin Signals DVDD 1 12 TEST AVDD 2 11 EIC VC 3 10 EIO RAC 4 9 EIF 5 6 7 8 TAC RXI TXF TXO CX20548 The PADDLE, a connective surface located on the bottom of the package and referred to as pin 17, is connected internally to analog ground (AGND). Table 3-5. CX20548 LSD 16-Pin QFN Pin Signals Pin DSH-201723D Signal Label Pin Signal Label 1 DVDD 9 EIF 2 AVDD 10 EIO 3 4 VC RAC 11 12 EIC TEST 5 TAC 13 GPIO 6 RXI 14 DIBP 7 TXF 15 PWR 8 TXO 16 17 DIBN PADDLE (AGND) 2012 Conexant Systems, Inc. 3-9 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 3-6. CX20548 LSD Hardware Signal Definitions Label Pin I/O I/O Type Signal Name/Description System Interface Signals PWR Unregulated Power Output. Unregulated power output from the internal rectifier, connect to AGND_LSD through C870. REF Output Middle Reference Voltage. Connect to AGND_LSD through C844, which must be placed close to pin 3. Use a short path and a wide trace to AGND_LSD pin. PWR Analog Power Output. Provides external connection point for decoupling. (AVDD is routed internally to LSD analog circuits.). Connect to AGND_LSD through C828. C828 must be placed close to pins 2. PWR Digital Power Output. Provides external connection point for decoupling. Connect to AGND_LSD through C830. Place C830 near pin 1. AGND_LSD Paddle Analog Ground. The conductive surface located on the bottom of the package and referred to as pin 17 is connected internally to device analog ground. Connect to AGND_LSD. PWR 15 PWR VC 3 REF AVDD 2 PWR DVDD 1 PWR PADDLE (AGND) 17 AGND_LSD DIBP 14 I/O I/O DIB Positive. Positive terminal of DIB, connect to secondary of DIB transformer. DIBN 16 I/O I/O DIB Negative. Negative terminal of DIB, connect to secondary of DIB transformer. RAC TAC 4 5 I I EIC 11 O EIO 10 O EIF 9 I RXI 6 I TXO 8 O TXF 7 I DIB Interface Signals TIP and RING Interface Signals RING AC Coupled and TIP AC Coupled. Un-rectified voltage from telephone line used to detect ring. Connect RAC to the diode bridge AC node (RING) through R802 (connects to pin 4). Connect TAC to the diode bridge AC node (TIP) through R804 (connects to pin 5). Oa Electronic Inductor Capacitor. Electronic inductor filtering capacitor. Connect to AGND_LSD through C858. Oa Electronic Inductor Output. Calculated voltage is applied to this output to control off-hook and DC VI mask operation. Connect to base of Q804. Ia Electronic Inductor Feedback. Connect to emitter of Q804 through R826. Ia Receive Analog Input. Receiver operational amplifier inverting input. AC coupled to the Bridge_CC node through R810 (connects to pin 6) and C810 in series. R810 and C810 must be placed very close to pin 6. The length of the PCB trace connecting R810 to the RXI pin must be kept at an absolute minimum. Oa Transmit Output. Outputs transmit signal and impedance matching signal; connect to base of transistor Q802. Ia Transmit Feedback. Connect to emitter of transistor Q802. Ia a Not Used GPIO 1 I/O It/Ot12 General Purpose I/O. Leave open if not used. Notes: 1. I/O types*: Ia Analog input It Digital input* Oa Analog output Ot12 Digital output* AGND_LSD Isolated LSD Analog Ground (isolated from the host system ground) *See Section CX20548 LSD GPIO DC Electrical Characteristics (Table 3-7). 2. Refer to applicable reference design for exact component placement and values. 3-10 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 3-7. CX20548 LSD GPIO DC Electrical Characteristics Parameter Symbol Min. Typ. Max. Units Input Voltage VIN -0.30 - 3.465 V Input Voltage Low VIL - - 1.0 V Input Voltage High VIH 1.6 - - V Output Voltage Low VOL VOH 0 - 0.33 V 2.97 - - V Output Voltage High Test Conditions DVDD = +3.465V Input Leakage Current - -10 - 10 A Output Leakage Current (High Impedance) - -10 - 10 A GPIO Output Sink Current at 0.33 V maximum - 2.4 - mA GPIO Output Source Current at 2.97 V - 2.4 - mA minimum GPIO Rise Time/Fall Time 20 100 ns Test Conditions unless otherwise stated: DVDD = +3.3V +5%; TA = 0C to 70C; external load = 50 pF Table 3-8. CX20548 LSD AVDD and DVDD DC Electrical Characteristics PWR Input +3.3 V < PWR < +4.5 V AVDD Output +3.3 V 5% PWR must be at least 100mV higher than AVDD. See PWR, AVDD, and DVDD descriptions in Table 3-6. DSH-201723D DVDD Output +3.0 V 5% 2012 Conexant Systems, Inc. 3-11 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 3.3 Electrical and Environmental Specifications 3.3.1 Operating Conditions, Absolute Maximum Ratings, and Power Requirements The operating conditions are specified in Table 3-9. The absolute maximum ratings are listed in Table 3-10. The current and power requirements are listed in Table 3-11. Table 3-9. Operating Conditions Parameter Supply Voltage Operating Ambient Temperature Symbol VCC T A Limits +4.75 to 5.25 0 to +70 Units VDC C Symbol VCC V IN V HZ T STG I IK I OK V ESD I TRIG Limits -0.5 to +6.0 -0.3 to (VDD +0.3)* Units VDC VDC -0.3 to (VDD +0.3)* VDC -55 to +125 C 20 mA 20 mA 2500 VDC 400 mA Table 3-10. Absolute Maximum Ratings Parameter Supply Voltage Input Voltage Voltage Applied to Outputs in High Impedance (Off) State Storage Temperature Range DC Input Clamp Current DC Output Clamp Current Static Discharge Voltage (25C) Latch-up Current (25C) * VCC = +5V 5%. 3-12 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Handling CMOS Devices The device contains circuitry to protect the inputs against damage due to high static voltages. However, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltage. An unterminated input can acquire unpredictable voltages through coupling with stray capacitance and internal cross talk. Both power dissipation and device noise immunity degrades. Therefore, all inputs should be connected to an appropriate supply voltage. Input signals should never exceed the voltage range from -0.3V to VDD + 0.3V. This prevents forward biasing the input protection diodes and possibly entering a latch up mode due to high current transients. Table 3-11. Current and Power Requirements Current Mode Typical Current (mA) Power Maximum Current (mA) 77 77 88 Typical Power (mW) 380 380 435 Enumeration 76 Operating (Idle) 76 Operating (Connected) 87 Notes: 1. Test conditions: VCC = +5.0 V for typical values; VCC = + 5.25 V for maximum values. 2. Input Ripple 0.1 Vpeak-peak. DSH-201723D 2012 Conexant Systems, Inc. Maximum Power (mW) 404 404 462 3-13 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 3.4 Crystal Specifications Crystal specifications are listed in Table 3-12. Table 3-12. Crystal Specifications Characteristic Frequency Calibration Tolerance Frequency Stability vs. Temperature Frequency Stability vs. Aging Oscillation Mode Calibration Mode Load Capacitance, C L Shunt Capacitance, C O Series Resistance, R 1 Drive Level Operating Temperature Storage Temperature 3-14 Value 28.224 or 27.000 MHz nominal 50 ppm at 25C (C = 16.5 and 19.5 pF) L 35 ppm (0C to 70C) 20 ppm/5 years Fundamental Parallel resonant 18 pF nom. 7 pF max. 35-60 max. @20 nW drive level 100 W correlation; 500 W max. 0C to 70C -40C to 85C 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 4. Package Dimensions The CX93010 comes in a 20-pin package in either punch or sawn style. Both are electrically equivalent and share the same footprint. Table 4-1 provides a dimension table that is common to both QFN styles. The punch-style package is shown , and the sawn-style package is shown in . Table 4-1. Package Dimensions for 20-Pin QFN Punch and Sawn Styles Dim. mm Min. e Nom. Note Max. 0.8 BSC L 0.5 0.75 b 0.28 0.4 D2 3.95 4.25 E2 3.95 4.25 A 0.8 0.90 A1 0.00 0.05 A3 0.20 REF. D 6.00 BSC D1 5.75 BSC E 6.00 BSC E1 5.75 BSC (1) (1) General Notes: 1. All dimensions in mm. Footnotes: (1) This dimension is applied only for Punched QFN. (2) Shape of Pin #1 indicator on the bottom of package can be different (i.e., Chamfer, Half Circle). DSH-201723D 2012 Conexant Systems, Inc. 4-1 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Figure 4-1. Package Dimensions for 20-Pin QFN, Punch Style 4-2 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Figure 4-2. Package Dimensions for 20-Pin QFN, Sawn Style DSH-201723D 2012 Conexant Systems, Inc. 4-3 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA The CX20548 comes in a 16-pin QFN package, in either punch or sawn style. Both are electrically equivalent and share the same footprint. Table 4-2 vides a dimension table that is common to both QFN styles. The punch-style package is shown in Figure 4-3, and the sawn-style package is shown in Figure 4-4. Table 4-2. Package Dimensions for 16-Pin QFN Punch and Sawn Styles Dim. Minimum e Nominal Maximum Note 0.65 BSC L 0.5 0.75 b 0.21 0.35 D2 1.95 2.10 2.25 E2 1.95 2.10 2.25 A 0.8 1.00 A1 0.00 0.05 A3 0.20 REF. D 4.00 BSC D1 3.75 BSC E 4.00 BSC E1 3.75 BSC (1) (2) (2) General Notes: 1. All dimensions in mm. 2. Shape of Pin #1 indicator on the bottom of package can be different (i.e., Chamfer or Half Circle). Footnotes: (1) Dimension b applies to plated terminal and is measured between 0.20 and 0.30 mm from terminal tip. (2) This dimension is applied only for Punched QFN. 4-4 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Figure 4-3. Package Dimensions for 16-Pin QFN, Punch Style DSH-201723D 2012 Conexant Systems, Inc. 4-5 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Figure 4-4. Package Dimensions for 16-Pin QFN, Sawn Style 4-6 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA This page is intentionally blank. DSH-201723D 2012 Conexant Systems, Inc. 4-7 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 5. Recommended QFN Surface Mount Land Patterns The recommended surface mount land patterns based on the IPC-SM-782 standard for board layout are shown in Figure 5-1 for the 20-pin QFN and Figure 5-2 for the 16-pin QFN. Figure 5-1. Recommended Surface Mount Land Pattern for 20-Pin QFN DSH-201723D 2012 Conexant Systems, Inc. 5-1 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Figure 5-2. Recommended Surface Mount Land Pattern for 16-Pin QFN 5-2 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 6. USB General Operation 6.1 Descriptors USB devices report their attributes using descriptors. A descriptor is a data structure with a defined format, which begins with a byte-wide field that contains the total number of bytes in the descriptor followed by a byte-wide field that identifies the descriptor type. Class and vendor specific descriptors may be returned in one of two ways. Class and vendor specific descriptors that are related to standard descriptors are returned in the same data buffer as the standard descriptor. If a class or vendor specific descriptor is not related to a standard descriptor, it is returned using class or vendor specific requests. 6.1.1 Device Descriptor A device descriptor describes general information about a USB device, which applies globally to the device and all of the device's configurations (Table 6-1). A USB device has only one device descriptor. Vendor ID, Product ID, and Device Release Number can be changed. The Manufacturer Name, Product Name, and Serial Number can also be customized. DSH-201723D 2012 Conexant Systems, Inc. 6-1 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA Table 6-1. Device Descriptors Offset 6-2 Field Size Value 0 1 2 bLength bDescriptorType bcdUSB 1 1 2 Number Constant BCD Default (Hex.) 12 01 0110 4 bDeviceClass 1 Class 02 5 bDeviceSubClass 1 SubClass 00 6 bDeviceProtocol 1 Protocol 00 7 bMaxPacketSize0 1 Number 40 8 idVendor 2 ID 0572 10 idProduct 2 ID 1340 12 14 15 16 bcdDevice iManufacturer iProduct iSerialNumber 2 1 1 1 BCD Index Index Index 0100 01 02 03 17 bNumConfigurations 1 Number 02 Description Size of this descriptor in bytes. DEVICE Descriptor Type. USB Specification Release Number in Binary-Coded Decimal (i.e., 2.10 is 0x210). This field identifies the release of the USB Specification that the device and its descriptors are compliant with. Class code (assigned by USB). If this field is reset to 0, each interface within a configuration specifies its own class information and the various interfaces operate independently. If this field is set to a value between 1 and 0xFE, the device supports different class specifications on different interfaces and the interfaces may not operate independently. This value identifies the class definition used for the aggregate interfaces. (For example, a CDROM device with audio and digital data interfaces that require transport control to eject CDs or start them spinning.) If this field is set to 0xFF, the device class is vendor specific. Subclass code (assigned by USB). These codes are qualified by the value of the bDeviceClass field. If the bDeviceClass field is reset to 0, this field must also be reset to 0. If the bDeviceClass field is not set to 0xFF, all values are reserved for assignment by USB. Protocol code (assigned by USB). These codes are qualified by the value of the bDeviceClass and the bDeviceSubClass fields. If a device supports classspecific protocols on a device basis as opposed to an interface basis, this code identifies the protocols that the device uses as defined by the specification of the device class. If this field is reset to 0, the device does not use class specific protocols on a device basis. However, it may use class specific protocols on an interface basis. If this field is set to 0xFF, the device uses a vendor specific protocol on a device basis. Maximum packet size for endpoint zero (only 8, 16, 32, or 64 are valid). Vendor ID (Conexant ID assigned by usb.org). The OEM ID will be assigned by usb.org. Product ID (assigned by Conexant) and stored in OEMsupplied serial EEPROM: 1340 for data/fax Device release number in binary-coded decimal. Index of string descriptor describing manufacturer. Index of string descriptor describing product. Index of string descriptor describing the device's serial number. Number of possible configurations. 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 6.1.2 Configuration Descriptor A configuration descriptor describes information about a specific device configuration (see Table 6-2). The descriptor describes the number of interfaces provided by the configuration. Table 6-2. Configuration Descriptors Offset Field 0 1 2 bLength bDescriptorType wTotalLength 1 1 2 Number Constant Number Default (Hex.) 09 02 0049 4 5 bNumInterfaces bConfigurationValue 1 1 Number Number 02 01 6 7 iConfiguration bmAttributes 1 1 Index Bitmap 00 A0 8 MaxPower 1 mA 32 DSH-201723D Size Value Description Size of this descriptor in bytes. CONFIGURATION. Total length of data returned for this configuration. Includes the combined length of all descriptors (configuration, interface, endpoint, and class or vendor specific) returned for this configuration. Number of interfaces supported by this configuration. Value to use as an argument to Set Configuration to select this configuration. Index of string descriptor describing this configuration. Configuration characteristics D7 Bus Powered D6 Self Powered D5 Remote Wakeup D4..0 Reserved (reset to 0) A device configuration that uses power from the bus and a local source sets both D7 and D6. The actual power source at runtime may be determined using the Get Status device request. If a device configuration supports remote wakeup, D5 is set to 1. Maximum power consumption of USB device from the bus in this specific configuration when the device is fully operational. Expressed in 2 mA units (i.e., 50 = 100 mA). Note: A device configuration reports whether the configuration is bus-powered or self-powered. Device status reports whether the device is currently selfpowered. If a device is disconnected from its external power source, it updates device status to indicate that it is no longer self-powered. A device may not increase its power draw from the bus, when it loses its external power source, beyond the amount reported by its configuration. If a device can continue to operate when disconnected from its external power source, it continues to do so. If the device cannot continue to operate, it fails operations it can no longer support. Host software may determine the cause of the failure by checking the status and noting the loss of the device's power source. 2012 Conexant Systems, Inc. 6-3 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 6.1.3 Interface Descriptor An interface descriptor describes a specific interface provided by the associated configuration (see Table 6-3Table 6-3). It is always returned as part of a configuration descriptor. An interface descriptor never includes endpoint zero in the number of endpoints. Table 6-3. Interface Descriptors Offset 6-4 Field Size Value 0 1 2 bLength bDescriptorType bInterfaceNumber 1 1 1 Number Constant Number Default (Hex.) 09 04 00 3 bAlternateSetting 1 Number 00 4 bNumEndpoints 1 Number 01 5 bInterfaceClass 1 Class 02 6 bInterfaceSubClass 1 SubClass 02 7 bInterfaceProtocol 1 Protocol 01 8 iInterface 1 Index 00 Description Size of this descriptor in bytes. INTERFACE Descriptor Type. Number of interface. Zero-based value identifying the index in the array of concurrent interfaces supported by this configuration. Value used to select alternate setting for the interface identified in the prior field. Number of endpoints used by this interface (excluding endpoint zero). If this value is 0, this interface only uses endpoint zero. Class code (assigned by USB). If this field is reset to 0, the interface does not belong to any USB specified device class. If this field is set to 0xFF, the interface class is vendor specific. All other values are reserved for assignment by USB. Subclass code (assigned by USB). These codes are qualified by the value of the bInterfaceClass field. If the bInterfaceClass field is reset to 0, this field must also be reset to 0. If the bInterfaceClass field is not set to 0xFF, all values are reserved for assignment by USB. Protocol code (assigned by USB). These codes are qualified by the value of the bInterfaceClass and the bInterfaceSubClass fields. If an interface supports classspecific requests, this code identifies the protocols that the device uses as defined by the specification of the device class. If this field is reset to 0, the device does not use a class specific protocol on this interface. If this field is set to 0xFF, the device uses a vendor specific protocol for this interface. Index of string descriptor describing this interface. 2012 Conexant Systems, Inc. DSH-201723D CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 6.1.4 Endpoint Descriptor Each endpoint used for an interface has its own descriptor, which contains the information required by the host to determine the bandwidth requirements of each endpoint (see Table 6-4). An endpoint descriptor, like an Interface Descriptor, is always returned as part of a configuration descriptor. The default values are: Interrupt In 1: 07058103400080 Bulk In 2: 07058202400001 Bulk Out 2: 07050202400001 Table 6-4. Endpoint Descriptors Offset 0 1 2 Field bLength bDescriptorType bEndpointAddress Size 1 1 1 Value Number Constant Endpoint 3 bmAttributes 1 Bit Map 4 wMaxPacketSize 2 Number 6 bInterval 1 Number DSH-201723D Description Size of this descriptor in bytes. ENDPOINT Descriptor Type. The address of the endpoint on the USB device described by this descriptor. The address is encoded as follows: Bit 0..3: The endpoint number Bit 4..6: Reserved, reset to 0 Bit 7: Direction, ignored for control endpoints 0 OUT endpoint 1 IN endpoint This field describes the endpoint's attributes when it is configured using the bConfigurationValue. Bit 0..1: Transfer Type 00 Control 01 Isochronous 10 Bulk 11 Interrupt All other bits are reserved Maximum packet size this endpoint is capable of sending or receiving when this configuration is selected. For isochronous endpoints, this value is used to reserve the bus time in the schedule, required for the per frame data payloads. The pipe may, on an ongoing basis, actually use less bandwidth than that reserved. The device reports, if necessary, the actual bandwidth used via its normal, nonUSB defined mechanisms. For interrupt, bulk, and control endpoints smaller data payloads may be sent, but will terminate the transfer and may or may not require intervention to restart. Interval for polling endpoint for data transfers. Expressed in milliseconds. This field is ignored for bulk and control endpoints. For isochronous endpoints this field must be set to 1. For interrupt endpoints, this field may range from 1 to 255. 2012 Conexant Systems, Inc. 6-5 CX93010-2x UCMxx USB V.92/V.32bis Controllered Modem with CX20548 SmartDAA 6.1.5 Enumeration The CX93010-2x enumeration process consists of the following steps: 6.1.6 1. Get device descriptor. The host requests and reads the device descriptor to determine maximum packet size. 2. Set address. The host sends the CX93010-2x's function address in a data packet using function endpoint 0. Device firmware interprets this data. 3. Get device descriptor. The host requests and reads the device descriptor to determine such information as device class, USB Specification compliance level, maximum packet size for endpoint 0, vendor id, product id, etc. 4. Get configuration descriptor. The host requests and reads the device configuration descriptor to determine such information as the number of interfaces and endpoints; endpoint transfer type, packet size, and direction; power source; maximum power; etc. When the host requests the configuration descriptor, all related interface and endpoint descriptors are returned. 5. Set configuration. The host assigns a configuration value to the device to establish the current configuration. Endpoints Data transfers with the host are made to/from endpoints on the USB module. The CX93010-2x provides the function endpoints listed in Table 6-5. Table 6-5. Endpoints Endpoint Pair Function Endpoint 0 Function Endpoint 1 Function Endpoint 2 6-6 Max. Packet Size 64 bytes 64 bytes 64 bytes USB Data Transfer Types Control Interrupt Bulk 2012 Conexant Systems, Inc. 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