Do the PCIe Rx/Tx pins on the 60 module require DC blocking caps?

Summit SuiteDVK-ST60-2230CST60-2230C-PST60-2230C-PUST60-SIPTST60-2230C

Answer

M.2 Version:

  • The M.2 version of the module already has DC blocking cap on the Tx side; so it's not required.
  • On the Rx side of the module, it's assumed the host will have DC blocking caps on the Tx side.

 

SIP Version:

  • You must add DC blocking cap on the Tx side of the module.
  • On the Rx side of the module, it's assumed the host will have DC blocking cap on the Tx side.