0 XC4000XLA/XV Field Programmable Gate Arrays R DS015 (v1.3) October 18, 1999 0 0* Product Specification XC4000XLA/XV Family Features Electrical Features Note: XC4000XLA devices are improved versions of XC4000XL devices. The XC4000XV devices have the same features as XLA devices, incorporate additional interconnect resources and extend gate capacity to 500,000 system gates. The XC4000XV devices require a separate 2.5V power supply for internal logic but maintain 5V I/O compatibility via a separate 3.3V I/O power supply. For additional information about the XC4000XLA/XV device architecture, refer to the XC4000E/X FPGA Series general and functional descriptions. * * * * * * * System-featured Field-Programmable Gate Arrays - Select-RAMTM memory: on-chip ultra-fast RAM with - Synchronous write option - Dual-port RAM option - Flexible function generators and abundant flip-flops - Dedicated high-speed carry logic - Internal 3-state bus capability - Eight global low-skew clock or signal distribution networks Flexible Array Architecture Low-power Segmented Routing Architecture Systems-oriented Features - IEEE 1149.1-compatible boundary scan - Individually programmable output slew rate - Programmable input pull-up or pull-down resistors - Unlimited reprogrammability Read Back Capability - Program verification and internal node observability * * * * * * * * XLA Devices Require 3.0 - 3.6 V (VCC) XV Devices Require 2.3- 2.7 V (VCCINT) and 3.0 - 3.6 V (VCCIO) 5.0 V TTL compatible I/O 3.3 V LVTTL, LVCMOS compliant I/O 5.0 V and 3.0 V PCI Compliant I/O 12 mA or 24 mA Current Sink Capability Safe under All Power-up Sequences XLA Consumes 40% Less Power than XL XV Consumes 65% Less Power than XL Optional Input Clamping to VCC (XLA) or VCCIO (XV) Additional Features * Footprint Compatible with XC4000XL FPGAs - Lower cost with improved performance and lower power * Advanced Technology -- 5 layer metal, 0.25 m CMOS process (XV) or 0.35 m CMOS process (XLA) * Highest Performance -- System erformance beyond 100 MHz * High Capacity -- Up to 500,000 system gates and 270,000 synchronous SRAM bits * Low Power -- 3.3 V/2.5 V technology plus segmented routing architecture * Safe and Easy to Use -- Interfaces to any combination of 3.3 V and 5.0 V TTL compatible devices Table 1: XC4000XLA Series Field Programmable Gate Arrays * Device Logic Cells XC4013XLA XC4020XLA XC4028XLA XC4036XLA XC4044XLA XC4052XLA XC4062XLA XC4085XLA XC40110XV XC40150XV XC40200XV XC40250XV 1,368 1,862 2,432 3,078 3,800 4,598 5,472 7,448 9,728 12,312 16,758 20,102 Max Logic Max. RAM Typical Gates Bits Gate Range (No RAM) (No Logic) (Logic and RAM)* 13,000 20,000 28,000 36,000 44,000 52,000 62,000 85,000 110,000 150,000 200,000 250,000 18,432 25,088 32,768 41,472 51,200 61,952 73,728 100,352 131,072 165,888 225,792 270,848 10,000 - 30,000 13,000 - 40,000 18,000 - 50,000 22,000 - 65,000 27,000 - 80,000 33,000 - 100,000 40,000 - 130,000 55,000 - 180,000 75,000 - 235,000 100,000 - 300,000 130,000 - 400,000 180,000 - 500,000 CLB Matrix Total CLBs Number of Flip-Flops 24 x 24 28 x 28 32 x 32 36 x 36 40 x 40 44 x 44 48 x 48 56 x 56 64 x 64 72 x 72 84 x 84 92 x 92 576 784 1,024 1,296 1,600 1,936 2,304 3,136 4,096 5,184 7,056 8,464 1,536 2,016 2,560 3,168 3,840 4,576 5,376 7,168 9,216 11,520 15,456 18,400 Required Max. ConfigurUser I/O ation Bits 192 224 256 288 320 352 384 448 448 448 448 448 393,632 521,880 668,184 832,528 1,014,928 1,215,368 1,433,864 1,924,992 2,686,136 3,373,448 4,551,056 5,433,888 * Maximum values of gate range assume 20-30% of CLBs used as RAM DS015 (v1.3) October 18, 1999 - Product Specification 6-157 6 R XC4000XLA/XV Field Programmable Gate Arrays General Description XC4000 Series high-performance, high-capacity Field Programmable Gate Arrays (FPGAs) provide the benefits of custom CMOS VLSI, while avoiding the initial cost, long development cycle, and inherent risk of a conventional masked gate array. The result of fifteen years of FPGA design experience and feedback from thousands of customers, these FPGAs combine architectural versatility, increased speed, abundant routing resources, and new, sophisticated software to achieve fully automated implementation of complex, high-density, high-performance designs. The XV devices also incorporate additional routing resources in the form of 8 octal-length segmented routing channels vertically and horizontally per row and column. XLA/XV and XL Family Differences The XC4000XLA/XV families of FPGAs are logically identical to XC4000EX and XC4000XL FPGAs, however I/O, configuration logic, JTAG functionality, and performance have been enhanced. In addition, they deliver: * * * * * Figure 1: Cross Section of Xilinx 0.25 micron, 5 layer metal XC4000XV FPGA. Visible features are five layers of metallization, tungsten plug vias and trench isolation. The small gaps above the lowest layer are 0.25 micron polysilicon MOSFET gates. The excellent planarity of each metal layer is due to the use of "chemical-mechanical polishing" or CMP. In effect, each layer is ground flat before a new layer is added. IOB Enhancements * * Technology Advantage XC4000XLA/XV FPGAs use 5 layer metal silicon technology to improve performance while reducing device cost and power. In addition, IOB enhancements provide full PCI compliance and the JTAG functionality is expanded. * Low Power Internal Logic XC4000XV FPGAs incorporate all the features of the XLA devices but require a separate 2.5V power supply for internal logic. I/O pads are still driven from a 3.3V power supply. The 2.5V logic supply is named VCCINT and the 3.3 V IO supply is named VCCIO. 6-158 Improved Performance XLA/XV devices benefit from advance processing technology and a reduction in interconnect capacitance which improves performance over XL devices by more than 30%. Lower Power XLA/XV devices have reduced power requirements compared to equivalent XL devices. Shorter routing delays The smaller die of XLA/XV devices directly reduces clock delays and the delay of high-fanout signals. The reduction in clock delay allows improved pin-to-pin I/O specifications. Lower Cost XLA/XV device cost is directly related to the die size and has been reduced significantly from that of equivalent XL devices. Express mode configuration Express mode configuration is available on the XLA and XV devices. * 12/24 mA Output Drive The XLA/XV family of FPGAs allow individual IOBs to be configured as high drive outputs. Each output can be configured to have 24 mA drive strength as opposed to the standard default strength of 12 mA. VCC Clamping Diode XLA and XV FPGAs have an optional clamping diode connected from each output to VCC (VCCIO for XV). When enabled they clamp ringing transients back to the 3.3V supply rail. This clamping action is required in 3.3V PCI applications. VCC clamping is a global option affecting all I/O pins. If enabled, TTL I/O compatibility is maintained, but full 5.0 Volt I/O tolerance is sacrificed. Enhanced ESD protection An improved ESD structure allows XV devices to safely pass the stringent 5V PCI (4.2.1.3) ringing test. This test applies an 11V pulse to each IOB for 11 ns via a 55 ohm resistor. Full 3.3V and 5.0V PCI compliance The addition of 12/24 mA drive, optional 3.3V clamping and improved ESD provides full compliance with either 3.3V or 5.0V PCI specifications. DS015 (v1.3) October 18, 1999 - Product Specification R XC4000XLA/XV Field Programmable Gate Arrays Three-State Register XC4000XLA/XV devices incorporate an optional register controlling the three-state enable in the IOBs.The use of the three-state control register can significantly improve output enable and disable time. FastCLK Clock Buffers The XLA/XV devices incorporate FastCLK clock buffers. Two FastCLK buffers are available on each of the right and left edges of the die. Each FastCLK buffer can provide a fast clock signal (typically < 1.5 ns clock delay) to all the IOBs within the IOB octant containing the buffer. The FastCLK buffers can be instantiated by use of the BUFFCLK symbols. (In addition to FastCLK buffers, the Global Early BUFGE clock buffers #1, #2, #5, and #6 can also provide fast clock signals (typically < 1.5 ns clock delay) to IOBs on the top and bottom of the die. XLA/XV Power Requirements XC4000XLA devices require 40% less power per CLB than equivalent XL devices. XC4000XV devices require 42% less power per CLB than equivalent XLA devices and 65% less power than XL devices The representative K-Factor for the following families can be found in Table 2. The K-Factor predicts device current for typical user designs and is based on filling the FPGA with active 16-Bit counters and measuring the device current at 1 MHz. This technique is described in XBRF14 "A Simple Method of Estimating Power in XC4000XL/EX/E FPGAs". To predict device power (P) using the K-Factor use the following formula: P=V*K*N*F; where: P= Device Power V= Power supply voltage K= the Device K-Factor N = number of active registers F = Frequency in MHz DS015 (v1.3) October 18, 1999 - Product Specification Table 2: K-Factor and Relative Power. FPGA Family XC4000XL XC4000XLA XC4000XV K-Factor 28 17 13 Power Power Relative To Relative To XL XLA 1.00 1.65 0.60 1.00 0.35 0.58 XLA/XV Logic Performance XC4000XLA/XV devices feature 30% faster device speed than XL devices, and consistent performance is achieved across all family members. Table 3 illustrates the performance of the XLA devices. For details regarding the implementation of these benchmarks refer to XBRF15 "Speed Metrics for High Performance FPGAs". Table 3: XLA/XV Estimated Benchmark Performance Register - Register Benchmarks Adder 2 Cascaded Adders 4 Cascaded Adders Cascaded 4LUTs Interconnect (Manhattan Distance) Dual Port RAM (Pipelined) Size 8-Bit 16-Bit 32-Bit 16-Bit 16-Bit 1 Level 2 Level 4 Level 6 Level 1 CLBs 4 CLBs 16 CLBs 64 CLBs 128 CLBs 8-Bits by 16 8-Bits by 256 Maximum Frequency 172 MHz 144 MHz 108 MHz 94 MHz 57 MHz 314 MHz 193 MHz 108 MHz 75 MHz 325 MHz 260 MHz 185 MHz 108 MHz 81 MHz 172 MHz 172 MHz 6-159 6 R XC4000XLA/XV Field Programmable Gate Arrays Using Fast I/O CLKS There are several issues associated with implementing fast I/O clocks by using multiple FastCLK and BUFGE clock buffers for I/O transfers and a BUFGLS clock buffer for internal logic. Reduced Clock to Out Period - When transferring data from a BUFGLS clocked register to an IOB output register which is clocked with a fast I/O clock, the total amount of time available for the transfer is reduced. Using Fast Capture Latch in IOB input - It is necessary to transfer data captured with the fast I/O clock edge to a delayed BUFGLS clock without error. The use of the Fast Capture Latch in the IOBs provides this functionality. Driving multiple clock inputs - Since each FastCLK input can only reach one octant of IOBs it will usually be necessary to drive multiple FastCLK and BUFGE input pads with a copy of the system clock. Xilinx recommends that systems which use multiple FastCLK and BUFGE input buffers use a "Zero Delay" clock buffer such as the Cypress CY2308 to drive up to 8 input pins. These devices contain a Phase locked loop to eliminate clock delay, and specify less than 250ps output jitter. PCB layout - The recommended layout is to place the PLL underneath the FPGA on the reverse side of the PCB. All 8 clock lines should be of equal length. This arrangement will allow all the clock line to be less than 2 cm in length which will generally eliminate the need for clock termination. * BUFGE (I,O) - The Global Early Buffer * BUFGLS (I,O)- The Global Low Skew Buffer * BUFFCLK (I,O) - The FastCLK Buffer * ILFFX (D, GF, CE, C, Q) - The Fast Capture Latch Macro Locating I/O elements - It is necessary to connect these elements to a particular I/O pad in order to select which buffer or fast capture latch will be used. Restricted Clock Loading - Because the input hold requirement is a function of internal clock delay, it may be necessary to restrict the routing of BUFGE to IOBs along the top and bottom of the die to obtain sub-ns clock delays. BUFGE 1 BUFGE 6 FCLK 1 FCLK 4 BUFGLS 2 BUFGE 5 BUFGE 2 Figure 2: Location of FastCLK, BUFGE and BUFGLS Clock Buffers in XC4000XLA/XV FPGAs Advancing the FPGAs clock - An additional advantage to using a PLL-equipped clock buffer is that it can advance the FPGA clocks relative to the system clock by incorporating additional board delay in the feedback path. Approximately 6 inches of trace length are necessary to delay the signal by 1 ns. Advancing the FPGA's clock directly reduces input hold requirements and improves clock to out delay. FPGA clocks should not be advanced more than the guaranteed minimum Output Hold Time (minus any associated clock jitter) or the outputs may change state before the system clock edge. For XLA and XV FPGAs the Output Hold Time is specified as a minimum Clock to Output Delay in the tables in the respective family Electrical Specification sections. The maximum recommended clock advance equals this value minus any clock jitter. FCLK 3 FCLK 2 SysClk PLL Clock O0 Buffer O1 O2 O3 O4 O5 FB O6 Ref O7 BUFGE1 BUFGE2 BUFGE5 BUFGE6 FCLK1 FCLK2 FCLK3 FCLK4 XC4000XLA XC4000XV Figure 3: Diagram of XC4000XLA/XV FPGA Connected to PLL Clock Buffer Driving 4 BUFGE and 4 FastCLK Clock Buffers. Instantiating I/O elements- Depending on the design environment, it may be necessary to instantiate the fast I/O elements. They are found in the libraries as: 6-160 DS015 (v1.3) October 18, 1999 - Product Specification R XC4000XLA/XV Field Programmable Gate Arrays JTAG Enhancements * XC4000XLA/XV devices have improved JTAG functionality and performance in the following areas: * IDCODE - The IDCODE register in JTAG is now supported. All future Xilinx FPGAs will support the IDCODE register. By using the IDCODE, the device connected to the JTAG port can be determined. The use of the IDCODE enables selective configuration dependent upon the FPGA found. The IDCODE register has the following binary format: vvvv:ffff:fffa:aaaa:aaaa:cccc:cccc:ccc1 Where: c = the company code; a = the array dimension in CLBs; f = the Family code; v = the die version number XV and XLA Family Differences The high density of the XC4000XV family FPGAs is achieved by using advanced 0.25 micron silicon technology. A 2.5 Volt power supply (VCCINT) is necessary to provide the reduced supply voltage required by 0.25 micron internal logic, however to maintain TTL compatibility a 3.3V power supply (VCCIO) is required by the I/O. To accommodate the higher gate capacity of XV devices, additional interconnect has been added. These differences are detailed below. * Family Codes = 01 for XLA; = 02 for SpartanXL; = 03 for Virtex; = 07 for XV. * Xilinx company code = 49 (hex) Table 4: IDCODEs assigned to XC4000XLA/XV FPGAs FPGA XC4013XLA XC4020XLA XC4028XLA XC4036XLA XC4044XLA XC4052XLA XC4062XLA XC4085XLA XC40110XV XC40150XV XC40200XV XC40250XV * * * * * IDCODE 0x00218093 0x0021c093 0x00220093 0x00224093 0x00228093 0x0022c093 0x00230093 0x00238093 0x00e40093 0x00e48093 0x00e54093 0x00e5c093 Configuration State - The configuration state is available to JTAG controllers. Configure Disable - The JTAG port can be prevented from reconfiguring the FPGA TCK Startup - TCK can now be used to clock the start-up block in addition to other user clocks. CCLK holdoff - Changed the requirement for Boundary Scan Configure or EXTEST to be issued prior to the release of INIT pin and CCLK cycling. Reissue configure - The Boundary Scan Configure can be reissued to recover from an unfinished attempt to configure the device. * VCCINT (2.5 Volt) Power Supply Pins The XV family of FPGAs requires a 2.5V power supply for internal logic, which is named VCCINT. The pins assigned to the VCCINT supply are named in the pinout guide for the XC4000XV FPGAs and in Table 5 on page 162. VCCIO (3.3 Volt) Power Supply Pins Both the XV and XLA FPGAs use a 3.3V power supply to power the I/O pins. The I/O supply is named VCCIO in the XV family. Octal-Length Interconnect Channels The XC40110XV, XC40150XV, XC40200XV, and XC40250XV have enhanced routing. Eight routing channels of octal length have been added to each CLB in both vertical and horizontal dimensions. XLA-to-XL Socket Compatibility The XC4000XLA devices are generally available in the same packages as equivalent XL devices, however the range of packages available for the XC4085XLA has been extended to include smaller packages such as the HQ240. XV-to-XL/XLA Socket Compatibility XC4000XV devices are available in five package options, pin-grid PG599 and ball-grid BG560, BG432, and BG352 and quad-flatpack HQ240. With the exception of the VCCINT power pins, XC4000XV FPGAs are compatible with XL and XLA devices in these packages if the following guidelines are followed: * * * DS015 (v1.3) October 18, 1999 - Product Specification Bypass FF - Bypass FF and IOB is modified to provide DRCLOCK only during BYPASS for the bypass flip-flop and during EXTEST or SAMPLE/PRELOAD for the IOB register. Lay out the PCB for the XV pinout. When an XL or XLA device is installed disconnect the VCCINT (2.5 V) supply. For the PG599, VCCINT should be connected to 3.3V. For BG560, BG432 and BG352 and HQ240 packages, the VCCINT voltage source should be left unconnected. The unused I/O pins in the XL/XLA devices connected to VCCINT will be pulled up to 3.3V. Care must be taken to insure that these pins are not driven when the XL/XLA device is operative. When an XC4000XV is installed, the VCCINT pins must 6-161 6 R XC4000XLA/XV Field Programmable Gate Arrays be connected to a 2.5V power supply. The differences between the XL and XV packages are detailed below: PG559 - XLA and XL devices in the PG599 package have 56 VCC pins.The XC4000XV devices allocate 16 of these I/O pins to VCCINT (2.5V). BG560 - XLA and XL devices in the BG560 package have 448 I/O pins.The XC4000XV devices allocate 16 of these I/O pins to VCCINT (2.5V). BG432- XLA and XL devices in the BG432 package have 352 I/O pins. The XC4000XV devices allocate 16 of these I/O pins to VCCINT (2.5V). BG352 - XLA and XL devices in the BG352 package have 289 I/O pins.The XC4000XV devices allocate 15 of these I/O pins to VCCINT (2.5V). HQ240- XLA and XL devices in the HQ240 package have 193 I/O pins.The XC4000XV devices allocate 15 of these I/O pins to VCCINT (2.5V). 6-162 Table 5: VCCINT (2.5 V) Pins in XV Packages HQ240 P198 P185 P164 P154 P137 P116 P104 P93 P77 P55 P43 P27 P16 P4 P225 - BG352 D10 D5 K4 N3 W2 AE3 AC10 AC13 AE19 AB24 V24 N24 J24 D24 A20 - BG432 A10 AB2 AB30 AG28 AH15 AH5 AJ10 AK22 B23 B4 C16 E28 K29 K3 R2 R29 BG560 E12 AD2 AD32 AK31 AM17 AK5 AK11 AN25 C24 D6 C17 E30 K32 J1 T3 U32 PG559 H12 H18 H26 H32 M8 M36 V8 V36 AF8 AF36 AM8 AM36 AT12 AT18 AT26 AT32 DS015 (v1.3) October 18, 1999 - Product Specification R XC4000XLA/XV Field Programmable Gate Arrays I/O Signalling Standards XLA and XV devices are compatible with TTL, LVTTL, PCI 3V, PCI 5V and LVCMOS signalling. The various standards are illustrated in Table 6 and the signaling environment is illustrated in Figure 4. VCC Clamping XLA/XV devices are fully 5V TTL I/O compatible if VCC clamping is not enabled. The I/O pins can withstand input voltages up to 7V. With VCC clamping enabled, the XLA/XV devices will begin to clamp input voltages to one diode voltage drop above VCC. In both cases negative voltage is clamped to one diode voltage drop below ground. XLA/XV devices maintain LVTTL I/O compatibility when VCC clamping is enabled, however full 5.0V TTL I/O compatibility is sacrificed. Overshoot and Undershoot Ringing wave forms are allowed on XLA/XV inputs as long as undershoot is limited to -2.0V and overshoot is limited to +7.0V and current is limited to 100 mA for less than 10 ns. If VCC clamping is enabled then overshoot will begin to be clamped at VCC/VCCIO plus one diode voltage drop and undershoot will be clamped to ground minus one diode voltage drop. In either case the current must be limited to 100 mA per pin for less than 10 ns. Table 6: I/O Standards supported by XC4000XLA and XV FPGAs Signaling Standard TTL LVTTL PCI5V PCI3V VCC Clamping Not allowed OK Not allowed Required Output Drive 12/24 mA 12/24 mA 24 mA 12 mA VIH_MAX VIH MIN VIL MAX VOH MIN VOL MAX 5.5 3.6 5.5 3.6 LVCMOS 3V OK 12/24 mA 3.6 2.0 2.0 2.0 50% of VCC/VCCIO 50% of VCC/VCCIO 0.8 0.8 0.8 30% of VCC/VCCIO 30% of VCC/VCCIO 2.4 2.4 2.4 90% of VCC/VCCIO 90% of VCC/VCCIO 0.4 0.4 0.4 10% of VCC/VCCIO 10% of VCC/VCCIO 5.0 V Power 3.3 V Power 2.5 V Power VCC (5 V) 5 Volt Device VCCIO VCCINT TTL XC4000XV VCC (3.3 V) LVTTL 3.3 Volt Device LVTTL Ground X7147 Figure 4: The Signalling Environment for XLA/XV FPGAS. For XLA devices the VCCIO and VCCINT supplies are replaced by a single 3.3 Volt VCC supply, however, all indicated I/O signalling is still supported. Express Configuration Mode Express configuration mode is similar to Slave Serial configuration mode, except that data is processed one byte per CCLK cycle instead of one bit per CCLK cycle. An external source is used to drive CCLK, while byte-wide data is loaded directly into the configuration data shift registers (Figure 5). A CCLK frequency of 10 MHz is equivalent to a 80 MHz serial rate, because eight bits of configuration data are loaded per CCLK cycle. Express mode does not sup- DS015 (v1.3) October 18, 1999 - Product Specification port CRC error checking, but does support constant-field error checking. A length count is not used in Express mode. Express mode must be specified as an option to the BitGen program, which generates the bitstream. The Express mode bitstream is not compatible with the other configuration modes. Express mode is selected by a <010> on the mode pins (M2, M1, M0). The first byte of parallel configuration data must be available at the D inputs of the FPGA a short setup time before the second rising CCLK edge. Subsequent data bytes are 6-163 6 R XC4000XLA/XV Field Programmable Gate Arrays clocked in on each consecutive rising CCLK edge (Figure 6). becomes active as soon as that device has been configured. Pseudo Daisy Chain Table 7: Pin Functions During Configuration (4000XLA/XV Express mode only) As illustrated in Figures 5 and 6, multiple devices with different configurations can be configured in a pseudo daisy chain provided that all of the devices are in Express mode. A single combined byte-wide data stream is used to configure the chain of Express mode devices. CCLK pins are tied together and D0-D7 pins are tied together as a data buss for all devices along the chain. A status signal is passed from DOUT of each device to the CS1 input of the device which follows it in the chain. Frame data is accepted only when CS1 is High and the device's configuration memory is not already full. The lead device in the chain has its CS1 input tied High (or floating, since there is an internal pullup). The status pin DOUT is initially High for all devices in the chain until the data stream header of seven bytes is loaded. This allows header data to be loaded into all devices in the chain simultaneously. After the header is loaded in all devices, their DOUT pins are pulled Low disabling configuration of all devices in the chain except the first device. As each device in the chain is filled, its DOUT goes High driving High the CS1 input of the next device, thereby enabling configuration of the next device in the pseudo daisy chain. The requirement that all DONE pins in a daisy chain be wired together applies only to Express mode, and only if all devices in the chain are to become active simultaneously. All 4000XLA/XV devices in Express mode are synchronized to the DONE pin. User I/O for each device becomes active after the DONE pin for that device goes High (The exact timing is determined by BitGen options.) Since the DONE pin is open-drain and does not drive a High value, tying the DONE pins of all devices together prevents all devices in the chain from going High until the last device in the chain has completed its configuration cycle. If the DONE pin of a device is left unconnected, the device 6-164 CONFIGURATION MODE USER <M2:M1:M0> OPERATION EXPRESS MODE PIN FUNCTION <0:1:0> M2(LOW) (I) M2 M1(HIGH) (I) M1 M0(LOW) (I) M0 HDC (HIGH) I/O LDC (LOW) I/O INIT I/O DONE DONE PROGRAM (I) PROGRAM CCLK (I) CCLK (I) DATA 7 (I) I/O DATA 6 (I) I/O DATA 5 (I) I/O DATA 4 (I) I/O DATA 3 (I) I/O DATA 2 (I) I/O DATA 1 (I) I/O DATA 0 (I) I/O DOUT SGCK4-I/O TDI TDI-I/O TCK TCK-I/O TMS TMS-I/O TDO TDO-(O) CS1 I/O Notes 1. A shaded table cell represents the internal pull-up used before and during configuration. 2. (I) represents an input; (O) represents an output. 3. INIT is an open-drain output during configuration. Because only XC4000XLA/XV, SpartanXL, and XC5200 devices support Express mode, only these devices can be used to form an Express mode pseudo daisy chain. DS015 (v1.3) October 18, 1999 - Product Specification R XC4000XLA/XV Field Programmable Gate Arrays VCC 8 M0 M1 CS1 DATA BUS 8 M2 M0 CS1 DOUT 8 D0-D7 M1 To Additional Optional Daisy-Chained Devices M2 DOUT D0-D7 Optional Daisy-Chained 4000XLA/XV VCC 4000XLA/XV 4.7K PROGRAM INIT PROGRAM PROGRAM INIT INIT DONE CCLK DONE CCLK To Additional Optional Daisy-Chained Devices CCLK 6 99010800 Figure 5: Express Mode Circuit Diagram Table 8: Express Mode Programming Switching Characteristic CCLK Description INIT (High) setup time D0 - D7 setup time D0 - D7 hold time CCLK High time CCLK Low time CCLK Frequency Symbol TIC TDC TCD TCCH TCCL FCC Min 5 20 0 45 45 Max 10 Units s ns ns ns ns MHz Preliminary DS015 (v1.3) October 18, 1999 - Product Specification 6-165 R XC4000XLA/XV Field Programmable Gate Arrays CCLK 1 TIC INIT TCD 3 2 T DC BYTE 0 D0-D7 BYTE 1 BYTE 2 BYTE 3 BYTE 4 BYTE 5 BYTE 6 BYTE A BYTE B BYTE C Header DOUT First FPGA Filled Header Loaded CS1 First FPGA CS1 Second FPGA CS1 all downstream FPGAs Byte A is first frame byte for first FPGA Byte B is last frame byte for first FPGA Byte C is first frame byte for second FPGA 99012600 Note: CS1 must remain High throughout loading of the configuration data stream. In the pseudo daisy chain of Figure 5, the 7 byte data stream header is loaded into all devices simultaneously. Each device's data frames are then loaded in turn when its CS1 pin is driven High by the DOUT of the preceding device in the chain. Figure 6: Express Mode Configuration Switching Waveforms Data Stream Format The data stream ("bitstream") format is identical for all serial configuration modes, but different for the 4000XLA/XV Express mode. In Express mode, the device becomes active when DONE goes High, therefore no length count is required. Additionally, CRC error checking is not supported in Express mode. The data stream format is shown in Table 9. Express mode data is shown with D0 at the left and D7 at the right. The configuration data stream begins with two bytes of eight ones each, a preamble code of one byte, followed by three bytes of eight ones each, and finally an end-ofheader field check byte. This header of seven bytes is followed by the actual configuration data in frames. The length and number of frames depends on the device type. Each frame begins with a start field and ends with an end-of-frame field check byte. In all cases, additional start-up bytes of data are required to provide six, or more, clocks for the start-up sequence at the end of configuration. Long daisy chains require additional startup bytes to shift the last data through the chain. All startup bytes are don't-cares; these bytes are not included in bitstreams created by the Xilinx software. A selection of CRC or non-CRC error checking is allowed by the bitstream generation software. The 4000XLA Express mode only supports non-CRC error checking. The non-CRC error checking tests for a designated end-of-frame field check byte for each frame. non-CRC error checking tests for a designated end-of-frame field check byte for each frame. 6-166 Table 9: 4000XLA/XV Express Mode Data Stream Format Data Type Fill Byte Preamble Code Fill Byte End-of-Header Field Check Byte Start Field Data Frame End-of-Frame Field Check Byte Extend Write Cycle Start-Up Bytes Express Mode (D0-D7) (4000XLA only) FFFFh 11110010b FFFFFFh 11010010b 11111110b DATA(n-1:0) 11010010b FFD2FFFFFFh FFFFFFFFFFFFh LEGEND: Unshaded Light Once per data stream Once per data frame Detection of an error results in the suspension of data loading and the pulling down of the INIT pin. The user must detect INIT and initialize a new configuration by pulsing the PROGRAM pin Low or cycling VCC. DS015 (v1.3) October 18, 1999 - Product Specification R XC4000XLA/XV Field Programmable Gate Arrays Serial PROM Recommendation Table 10 shows the physical characteristics of each XLA/XV family member and the recommended Xilinx Serial PROM recommended for use as configuration storage. Table 10: Physical Characteristics and Recommended Serial PROM Device Max. User I/O CLB Matrix Total CLBs Logic Cells XC4013XLA XC4020XLA XC4028XLA XC4036XLA XC4044XLA XC4052XLA XC4062XLA XC4085XLA XC40110XV XC40150XV XC40200XV XC40250XV 192 224 256 288 320 352 384 448 448 448 448 448 24 x 24 28 x 28 32 x 32 36 x 36 40 x 40 44 x 44 48 x 48 56 x 56 64 x 64 72 x 72 84 x 84 92 x 92 576 784 1,024 1,296 1,600 1,936 2,304 3,136 4,096 5,184 7,056 8,464 1,368 1,862 2,432 3,078 3,800 4,598 5,472 7,448 9,728 12,312 16,758 20,102 Number Max. RAM Required of Bits ConfigurFlip-Flops (No Logic) ation Bits 1,536 2,016 2,560 3,168 3,840 4,576 5,376 7,168 9,216 11,520 15,456 18,400 18,432 25,088 32,768 41,472 51,200 61,952 73,728 100,352 131,072 165,888 225,792 270,848 393,632 521,880 668,184 832,528 1,014,928 1,215,368 1,433,864 1,924,992 2,686,136 3,373,448 4,551,056 5,433,888 Serial PROM XC17512L XC17512L XC1701L XC1701L XC1701L XC1702L XC1702L XC1702L XC1704L XC1704L XC1704L+XC17512L XC1704L+XC1702L User I/O Per Package Table 11 shows the number of user I/Os available in each package for XC4000XLA/XV-Series devices. Call your local sales office for the latest availability information. Table 11: User I/O Pins Available by Device and Package XC4052XLA XC4062XLA XC4085XLA XC40110XV XC40150XV XC40200XV XC40250XV DS015 (v1.3) October 18, 1999 - Product Specification 193 193 193 193 193 193 178 178 288 320 352 352 352 336 336 336 336 448 448 BG560 PG559 256 256 256 256 256 288 289 289 289 289 274 274 BG432 HQ240 PQ208 HQ208 160 160 160 160 160 160 192 205 205 BG352 XC4044XLA 129 129 129 129 129 129 192 193 HQ304 XC4036XLA 160 160 BG256 XC4028XLA 129 129 PQ240 XC4020XLA 192 224 256 288 320 352 384 448 448 448 448 448 PQ160 Device XC4013XLA Max I/O HQ160 Maximum I/O Accessible per Package 352 384 448 432 432 432 432 6-167 6 R XC4000XLA/XV Field Programmable Gate Arrays Product Availability XLA Family Table 12 shows the current available package and speed grade combinations for XC4000XLA Series devices. Call your local sales office for the latest availability information, or see the Xilinx WEBLINX at http://www.xilinx.com for the latest revision of the specifications. 475 559 560 TYPE Plast. PLCC Plast. PQFP Plast. VQFP Plast. TQFP High-Perf. TQFP High-Perf. QFP Plast. PQFP Plast. TQFP High-Perf. TQFP High-Perf. QFP Plast. PQFP High-Perf. QFP CODE PQ100 VQ100 TQ144 HT144 HQ160 PQ160 TQ176 HT176 HQ208 PQ208 HQ240 XC4013XLA XC4020XLA XC4028XLA XC4036XLA XC4044XLA XC4052XLA XC4062XLA XC4085XLA Plast. BGA 432 BG560 411 Ceram. PGA 352 PG559 304 Ceram. PGA 299 PG475 256 Plast. BGA 240 BG432 240 Ceram. PGA 208 PG411 208 Plast. BGA 176 BG352 176 High-Perf. QFP 160 HQ304 160 Ceram. PGA 144 PG299 144 Plast. BGA 100 BG256 100 Plast. PQFP 84 PQ240 PINS PC84 Table 12: Component Availability Chart for XC4000XLA FPGAs -09 CI CI CI CI -08 CI CI CI CI -07 C C C C -09 CI CI CI CI -08 CI CI CI CI -07 C C C C -09 CI CI CI CI CI -08 CI CI CI CI CI -07 C C C C -09 CI CI CI CI CI -08 CI CI CI CI CI -07 C C C C C -09 CI CI CI CI CI CI -08 CI CI CI CI CI CI -07 C C C C C C -09 CI CI CI CI CI CI CI -08 CI CI CI CI CI CI CI -07 C C C C C C C -09 CI CI CI CI CI CI CI -08 CI CI CI CI CI CI CI -07 C C C C C C C -09 CI CI CI CI CI CI CI -08 CI CI CI CI CI CI CI -07 C C C C C C C C 1/25/99 C = Commercial TJ = 0 to +85C I= Industrial TJ = -40C to +100C 6-168 DS015 (v1.3) October 18, 1999 - Product Specification R XC4000XLA/XV Field Programmable Gate Arrays XV Family Table 13 show the current available package and speed grade combinations for the XC4000XV Series devices. Call your local sales office for the latest availability information, or see the Xilinx WEBLINX at http://www.xilinx.com for the latest revision of the specifications. PINS 84 100 100 144 144 160 160 176 176 208 208 240 240 256 299 304 352 411 432 475 559 560 TYPE Plast. PLCC Plast. PQFP Plast. VQFP Plast. TQFP High-Perf. TQFP High-Perf. QFP Plast. PQFP Plast. TQFP High-Perf. TQFP High-Perf. QFP Plast. PQFP High-Perf. QFP Plast. PQFP Plast. BGA Ceram. PGA High-Perf. QFP Plast. BGA Ceram. PGA Plast. BGA Ceram. PGA Ceram. PGA Plast. BGA CODE PC84 PQ100 VQ100 TQ144 HT144 HQ160 PQ160 TQ176 HT176 HQ208 PQ208 HQ240 PQ240 BG256 PG299 HQ304 BG352 PG411 BG432 PG475 PG559 BG560 Table 13: Component Availability Chart for XC4000XV FPGAs XC40110XV XC40150XV XC40200XV XC40250XV -09 CI CI CI CI -08 CI CI CI CI -07 C C C -09 CI CI CI CI CI -08 CI CI CI CI CI -07 C C C C C C -09 CI CI -08 CI CI -07 C -09 CI CI CI -08 CI CI CI -07 C C C C 11/24/98 C = Commercial TJ = 0 to +85C I= Industrial TJ = -40C to +100C DS015 (v1.3) October 18, 1999 - Product Specification 6-169 6 R XC4000XLA/XV Field Programmable Gate Arrays XC4000 Series Electrical Characteristics and Device-Specific Pinout Tables For the latest Electrical Characteristics and pinout information for each XC4000 Family, see the Xilinx web site at http://www.xilinx.com/partinfo/databook.htm#xc4000 Revision Control Version Description 2/1/99 (1.0) Release included in 1999 data book, section 6 2/19/99 (1.1) Updated Switching Characteristics Tables 5/14/99 (1.2) Replaced Electrical Specification pages for XLA and XV families with separate updates and added URL link on placeholder page for electrical specifications/pinouts for WebLINX users. 10/18/99 (1.3) Deleted HQ304 package/XC4028XLA and XC4036XLA entries from Table 11, page 6-168. Changed do DS015. 6-170 DS015 (v1.3) October 18, 1999 - Product Specification