Other Parts Discussed in Thread: XIO2001
I have a design with a XIO2001 PCIe to PCI bridge to a C6412. We see >100MBps when doing bursts which is ok when we're operating the PCI bus at 33MHz but we see the same throughput when we operate the PCI bus at 66MHz. We would have expected something closer to 200MBps in that mode. I've confirmed the various pull-ups and downs are correct and that the PCI clock is at 66MHz.
We use the C6412 PCI DMA engine to transfer from L2 SRAM to the host PC. We get similar rates from the DSP's off-chip SDRAM. Reading through the forums I found the XIO2001 Performance Tuner and will be trying that tomorrow but it seems most of the other threads are concerned with getting over 100MBps with a 33MHz clock and we already have that.