Hello,
I am trying to design a PCIe add-in card that will use DS80PCI401 to extend the PCIe over 7m cable. My concept is to send refclk over the cable. The cable is a custom miniSAS HD cable with a 9th differential pair to carry the refclk. The differential impedance of these pairs is100ohm.
The idea is to pass the refclk from the PCIe host connector through this buffer so that it can maintain the SSC properties at the far end. This way I can achieve a synchronous clock architecture for the PCIe system.
The PCIe clocks are HCSL per PCIe spec. But I don't have to send it that way. I can receive it as a LVPECL or LVDS signal.
Any suggestions on recommended parts for this application?
TIA.
Sanjay
