Hello, In out project, we have to interface a Compact Flash card with a Spartan-3 fpga in Ultra-DMA mode. In the CF 3.0 specifications it states, that most of the lines need series termination resistors. We were just wondering, if those termination resistors are really needed, since the CF will be no more than an inch away from the Spartan 3. If they are indeed needed, we might have a problem determining the resistors values and doing signal integrity analisys, since we haven't been able to find an IBIS model for a CF card.
Best regards George