Mercury
Member level 3
compact flash ibis model
Hi guys,
I'm doing a design with a Compact Flash card and a Spartan 3 FPGA. I will be using Ultra-DMA 66 protocol for communication. In the specifications it states that in this mode lines need series termination. But it also mentiones long cables allong that. So I would like to know, If I really need termination resistors, since the compact flash will be no more than an inch away from the FPGA. The clock is also quite slow, 16MHz (DDR, so data speed is 33MHz). If resistors are needed, then I will have problems calculating resistor values and doing signal integrity analisys, since I haven't been able to find an IBIS model for CF.
George
Hi guys,
I'm doing a design with a Compact Flash card and a Spartan 3 FPGA. I will be using Ultra-DMA 66 protocol for communication. In the specifications it states that in this mode lines need series termination. But it also mentiones long cables allong that. So I would like to know, If I really need termination resistors, since the compact flash will be no more than an inch away from the FPGA. The clock is also quite slow, 16MHz (DDR, so data speed is 33MHz). If resistors are needed, then I will have problems calculating resistor values and doing signal integrity analisys, since I haven't been able to find an IBIS model for CF.
George