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i.MAX6 Sabre Lite / PCIE REFCLK / Intersil TW6865

Question asked by Peter Amond on Oct 7, 2016
Latest reply on Feb 15, 2017 by Gary Bisson

Richard ZhuEric NelsonLeo Leo

Hi All,


I'm having trouble getting the PCIE up on the i.MAX6 Quad Sabre Lite Development board ( ) and interfacing with TW6865 Intersil video chip and I couldn't find the sufficient details on how to connect REFCLK- and REFCLK+ of TW6865 with PCIE port of the i.MAX6Q Sabre Lite as it just have following pin connections. 


  1. Can you guide me to interface TW6865 with PCIE of Sabre Lite ? (Presently I'm working 3.14.52 kernel based system)
  2. When I check the schematic of Sabre lite board I could find there is no pin connection for CLK1_N and CLK1_P (C7 & D7 pins of processor) for PCIe clock. So it seems that we need to generate reference clock externally as it has done in PCIe Daughter board ( ). If I need to build external clock what is the frequency should I generate for PCIE ? (Because I'm not using PCIE daughter board) Can you trll me the frequency of the on board oscillator of PCIE Daughter board ?
  3. If I'm using 3.14.52 kernel what are the configurations should I follow ?


Thank You,