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PCIe x2 Lane Reversal

Question asked by Christian Sielaff on Apr 4, 2018
Latest reply on Apr 4, 2018 by ufedor
Hello all,

 

is it possible to connect a x1 PCIe End Point at the second lane of an x2 PCIe Root complex? We are working on a customer LS1021A design and the SerDes are configured over the RCW with 0x50 (PCIe1 x2 / PCIe2 x1 / SGMII2). Our PCIe EP is connected to the SerDes Lane "B" of the PCIe1 Root Complex. The PCIe1 Root Complex should support lane reversal as well and so it should be OK ... or?

 

We really appreciate your response.

 

Best regards and thank you in advance,
Christian

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