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Altera_Forum's avatar
Altera_Forum
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16 years ago

Best place for termination resistor

I am connecting a Micrel Gig-E PHY to a Cyclone III FPGA. Most of it is fairly straightforward - and I've got all GMII interface routed cleanly. The only trick is the TXCLK/GTXCLK pin. It's a s...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Is there a reason why you can't use one FPGA pin for both purposes? The Cyclone III Dev. board has a tripple-speed ethernet mac on it, and seems to use one pin?