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Re: pci compliant devices?
What I don't understand is how FPGA/CPLD's claim
both PCI compliance as well as TTL, LVTTL, LVCMOS
compliance. PCI is reflected wave switched with the
CLK->Q time (Tval) spec being the time from the
clock edge to Vstep/Vtest.
This in contrast to TTL, LVTTL, LVCMOS in which
CLK->Q is the time from the clock edge to the output
reaching Voh min or Vol max.
For FPGA/CPLD's is seems that you just need to make
sure you meet the PCI setup spec since the output
driver is not relying on the reflected wave in order
to reach Vih min.