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Connect Tech FreeForm/PCI-104 User Manual

Revision 0.02 36

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

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Connect-tech PCI-104 Manual do Utilizador Página 36