50 OHM Termination for PCIE LINES


We are designing a carrier board for Jetson nano module. We found in the product design guide that 50 ohm termination is mentioned for PCIe signals in that documnet. But, we are not able to see that termination in Jetson nano development kit. Whether it is neccesary to provide a termination resistor to PCIe lines? If yes, please let us know in which pins (PCIe_CLK, PCIe_TX, PCIe_RX) termination is needed. Also, let us know the placement of this termination.

Arun kumar

No, it is unnecessary to add resistors on board. That termination is on-die value and also a recommended value to load device for impedance matching.