Tonight's project: Find that FPGA pin!


#1

I came across a PCI card in the trash pile, and it turns out to have a nice FPGA (XCS1000) and a nice CPLD (XC95144XL) on it, with the FPGA handling the PCI interface. Having never done PCI bus stuff, I tore into it, finding the JTAG pins for programming both of those devices. The FPGA is actually loaded from a SPI memory, but for the sake of this experimentation, all I need right now is to load a new bitstream into the FPGA proper.

Now begins the tedious process of finding out which pin (ball, in this case) is hooked to what.


#2

So what do you think the card was used for?


#3

Looks like a one or ten gigabit optical card… or fiber storage card… minus the top interface board.


#4

Close, but no cigar! It is a T1/E1 card from Sangoma, and it is missing the daughter board which has the actual jacks on it. I plan to re-use those connectors for an interface of my own making. Mwhahahahaha.