33 Channels RS485/422 - PMC Front Panel Mezzanine Module
- 33 Channels of EIA-485/422B
- FPGA Firmware blocks supplied in VHDL for integration into user applications
- Windows, VxWorks and Linux host PMC support
The RS485-MOD2 is a front panel mezzanine module designed to provide serial I/O functionality to Curtiss-Wright's FPGA-based processing PMC modules. This module provides 33 channels of EIA-485/422B serial I/O. The RS485-MOD2 is aimed at embedded application development.
The RS485-MOD2 is designed to be used with:
| - PMC-FPGA05 | A Virtex-5 LX110 FPGA based PMC |
| - PMC-FPGA05 Development Kit | A Virtex-5 LX110 FPGA based PCI board |
| - PMC-FPGA03 | A Virtex II Pro XC2VP50 FPGA based PMC |
RS485/422
The RS485-MOD2 provides 33 channels of RS485 serial I/O; each channel can be configured as an input or output. Fully compliant onboard drivers allow either EIA-485 or EIA-422B to be supported. A single 68-way VHDCI (SCSI-5 style) connector provides access to the signals using a pin configuration that allows standard differential SCSI-5 cables to be used [only SCSI-5 cables fabricated with all 34 differential signals routed through twisted pairs should be used]. This simplifies use and minimizes cost. Serial protocols and timings are handled by the host FPGA.
Software
The RS485-MOD2 is hosted by the PMC-FPGA03, PMC-FPGA05 or PMC-FPGA05 Development Kit which are supported under Windows XP, VxWorks and Linux. The RS485-MOD2 support package is additional to the BSP that accompanies our PMC modules and includes:
- VHDL library code blocks: demonstrating how board resources can be used and how serial I/O operations are controlled by the host FPGA
- Hardware and firmware/software manuals
Development of VHDL code for the FPGA requires synthesis tools such as Xilinx Foundation.
| Front Panel Signals |
| Number of Channels | 33 signal pairs, configurable as input or output |
| Grounds | 2 |
| Connector | VHDCI - SCSI-5 style |
| I/O Bandwidth |
| Per Channel | 20 Mbps |
