Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Stratix II GX PCIe differential clock assignment

I am a newbee to the world of fpga. I have a stratix II gx pice board. I would like to use the 156.25 MHz clock, named as Osc B. The development board manual defines the clock as differential ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

A single signal must represent the differential clock in the top module port (the same with clock outputs and PCIe signals, BTW). The differential I/O standard has to be assigned in Pin Planner or Assignment Editor. As you are using the PCIe Development Kit, didn't you get reference designs with correct pin assignments shipped with the board?