Connect Tech PCI-104 user manual Appendix C Hardware Changes from Revision B

Connect Tech FreeForm/PCI-104 User Manual

Appendix C: Hardware Changes from Revision B

This appendix lists the changes between hardware revision B and hardware revision C. The following is a summary of changes:

￿PCB requires only 5V over PCI-104; it previously required 3.3V and 5V

￿A dedicated local bus oscillator was added to generate 50Mhz. A clock is no longer forwarded from FPGA to the PLX PCI 9056.

￿The DDR2 FPGA pinout has been changed to increase timing margins

￿The pinout of connector P4 (high-speed serial) has changed. The sideband signals have been relocated and 3.3V has been added.

￿The orientation of connector P5 (RS-485 port 0) has rotated 180 degrees

￿The Location of P8 (external power connector) has changed. The 3.3V enable signal has also been removed

Revision 0.02 36