XC3SD1800A-4FGG676C - Feature Summary
Figure 1. Xilinx Spartan-3A DSP FPGA
(XC3SD1800A-4FGG676C).
The XC3SD1800A-4FGG676C device is a member of the Spartan-3A DSP family of FPGAs. The Spartan-3A DSP provides a low-cost, high-performance DSP solution for high-volume, cost-critical applications.
The entire Spartan-3A DSP family includes two devices offering 1,800,000 and 3,400,000 gates. The XC3SD1800A-4FGG676C offers 1.8 million gates. Table 1 provides an information summary for this device.
In order to use the Spartan-3A DSP device, you will need to install the relevant Vendor tools – Xilinx® ISE™ or Xilinx ISE WebPACK® from www.xilinx.com.
| Feature | Description |
|---|---|
Device Name | XC3SD1800A-4FGG676C |
Vendor | Xilinx |
Family | Spartan-3A DSP |
Package | 676-Ball Fine Pitch Ball Grid Array (FG676) |
Speed Grade | Standard |
Temperature Grade | Commercial |
Pin Count | 676 |
Maximum User I/O Pins | 519 (includes a maximum of 110 Input-only pins) |
Max. Differential I/O Pairs | 227 |
System Gates | 1,800,000 |
Xilinx Logic Cells | 37,440 |
CLB Array | 4,160 CLBs (88 rows by 48 columns). (1 CLB = 4 Slices, giving 16,640 Slices). |
Embedded (Block) RAM | 1512K bits |
Distributed RAM | 260K bits |
Embedded Multipliers (18x18) | 84 (each 18x18 multiplier is part of an XtremeDSP™ DSP48A slice, which also includes an 18-bit pre-adder, 48-bit post-adder/accumulator and cascade capabilities) |
Digital Clock Managers (DCM) | 8 |
Global Clock Resources | 16 |
Configuration Memory Required | 8,197,280 bits |
On-Chip Termination Support | Yes |
Location on Board
The Spartan-3A DSP device (designated U4) is located on the component side and in the lower half of the board.
Schematic Reference
The Spartan-3A DSP device and related circuitry can be found on the following sheets of the daughter board schematics:
DEVICES.SchDoc(entitled FPGA, LEDs and SRAM Memory)
FPGA.SchDoc(entitled FPGA Connections)
FPGA_NonIO.SchDoc(entitled FPGA Power and Programming)
Bypass_FPGA_1V2.SchDoc(entitled FPGA Bypass 1V2)
Bypass_FPGA_2V5.SchDoc(entitled FPGA Bypass 2V5)
Bypass_FPGA_3V3.SchDoc(entitled FPGA Bypass 3V3).
Further Device Information
For more information on the XC3SD1800A-4FGG676C device, refer to the datasheet (ds610.pdf) and associated user guide (ug331.pdf) available at www.xilinx.com.