ADM-XRC SDK 2.8.1 User Guide (Linux)
© Copyright 2001-2009 Alpha Data
This section provides a brief primer to the protocol used on the local bus common to the Alpha Data Xilinx Reconfigurable Coprocessor range. The key features of the local bus are:
The differences between the models in the ADM-XRC range can be summarized by the following table:
Feature | ADM-XRC ADM-XRC-P |
ADM-XRC-II-Lite | ADM-XRC-II |
FPGA technology | Virtex Virtex-E Virtex-EM |
Virtex-II | Virtex-II |
Memory technology | ZBT SSRAM | ZBT SSRAM | ZBT SSRAM |
Max. local bus frequency | 40.0MHz | 40.0MHz | 66.67MHz |
Multiplexed address/data on local bus | No | No | No |
Supported data widths on local bus | 32 bits | 32 bits | 32 bits |
PCI to local bus bridge | PCI9080 | PCI9080 | PCI9656 |
Feature | ADP-DRC-II | ADP-WRC-II | ADM-XPL |
FPGA technology | Virtex-II | Virtex-II | Virtex-II Pro |
Memory technology | DDR SDRAM DIMM DDR-II SSRAM |
DDR SDRAM | DDR SDRAM ZBT SSRAM |
Max. local bus frequency | 66.67MHz | 66.67MHz | 80.0MHz (see note 1 below) |
Multiplexed address/data on local bus | No | No | Yes |
Supported data widths on local bus | 32 bits | 32 bits | 32 bits 64 bits |
PCI to local bus bridge | PCI9656 | PCI9656 | Virtex-II |
Feature | ADM-XP | ADP-XPI | ADM-XRC-4LX |
FPGA technology | Virtex-II Pro | Virtex-II Pro | Virtex-4 LX |
Memory technology | DDR SDRAM DDR-II SSRAM |
DDR SDRAM DIMM DDR-II SSRAM |
ZBT SSRAM |
Max. local bus frequency | 80.0MHz | 80.0MHz | 66.67MHz |
Multiplexed address/data on local bus | Yes | Yes | No |
Supported data widths on local bus | 32 bits 64 bits |
32 bits 64 bits |
32 bits |
PCI to local bus bridge | Virtex-II | Virtex-II | PCI9656 |
Feature | ADM-XRC-4SX | ADM-XRC-4FX | ADPE-XRC-4FX |
FPGA technology | Virtex-4 SX | Virtex-4 FX | Virtex-4 FX |
Memory technology | ZBT SSRAM | DDR-II SDRAM | DDR-II SDRAM |
Max. local bus frequency | 66.67MHz | 80.0MHz | 80.0MHz |
Multiplexed address/data on local bus | No | Yes | Yes |
Supported data widths on local bus | 32 bits | 32 bits 64 bits |
32 bits 64 bits |
PCI to local bus bridge | PCI9656 | Virtex-4 LX | Virtex-4 FX (PCI Express) |
Feature | ADM-XRC-5LX | ADM-XRC-5T1 | ADM-XRC-5T2 |
FPGA technology | Virtex-5 LX | Virtex-5 LXT Virtex-5 SXT |
Virtex-5 FXT Virtex-5 LXT Virtex-5 SXT |
Memory technology | DDR-II SDRAM | DDR-II SDRAM DDR-II SSRAM |
DDR-II SDRAM DDR-II SSRAM |
Max. local bus frequency | 80.0MHz | 80.0MHz | 80.0MHz |
Multiplexed address/data on local bus | Yes | Yes | Yes |
Supported data widths on local bus | 32 bits 64 bits |
32 bits 64 bits |
32 bits 64 bits |
PCI to local bus bridge | Virtex-4 LX | Virtex-4 LX | Virtex-4 LX |
Note 1: If logic revision from INFO utility is 1.2 or greater, max. LCLK frequency is 80MHz; otherwise 66.67MHz.
Click on one of the following topics for more information:
Tips on local bus interface design