The Acromag PMC-LX40 is a user-configurable Virtex-4 FPGA module in PMC form factor delivering flexible custom signal processing and real-time data acquisition for demanding applications. Built on the Xilinx Virtex-4 XC4VLX40 with 41,472 logic cells, 64 DSP slices, and 96 x 18Kbit block RAMs, the module integrates 256K x 36-bit dual-ported SRAM and 32Mb x 32-bit DDR DRAM for high-speed buffering. The PLX PCI 9656 controller provides 64-bit 66 MHz bus mastering with dual-channel DMA, full compliance with PCI Local Bus Specification Revision 2.2, and 5V/3.3V signaling.
Technical Specifications
FPGA Core
• Xilinx Virtex-4 XC4VLX40
• 41,472 logic cells
• 64 DSP slices
• 294,912 bits distributed RAM
• 96 x 18Kbit block RAMs
• 8 digital clock managers
Memory Architecture
• 256K x 36-bit dual-ported SRAM
• 32Mb x 32-bit DDR DRAM
PCI Interface
• 64-bit 66 MHz bus mastering
• Dual-channel DMA support
• Single INTA# multifunction interrupt
• 5V and 3.3V compliant signaling
I/O Connectivity
• Rear: 32 LVDS I/O lines via J4 connector, bank 5 VCCO at 2.5 V
• Front: Plug-in AXM mezzanine modules supported
Clocking
• Maximum recommended: 150 MHz
• Internal FPGA controller clock: 150 MHz
Power & Environmental
• Supply: 3.3 V external via PCI bus
• Rear I/O VCCO: 2.5 V
• Operating: 0°C to 70°C
• Storage: -55°C to 105°C
• Humidity: 5% to 95% non-condensing
• MTBF: 773,246 hours @ 25°C (MIL-HDBK-217F Notice 2)
LVDS Output (Bank 5)
• VOH: 1.602 V
• VOL: 0.898 V
• VODIFF: 350 mV typical
• VOCM: 1.25 V typical
– Key Features
• Downloadable FPGA configuration via PCI bus
• On-board flash memory for automatic power-up configuration
• Conduction cooling option for hostile environments
• PMC form factor per P1386.1 specification
– Typical Applications
• Real-time signal processing
• Custom data acquisition systems
• DSP-intensive signal conditioning
• High-speed LVDS interfacing
– Compatibility & Integration
The module ships with an Engineering Design Kit (EDK) providing FPGA development documentation and integration guidelines. PCI bus compliance ensures compatibility with standard host architectures.
