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LS1043A and LS1046A - SerDes REF_CLK

Question asked by Juergen Elst on Aug 22, 2017
Latest reply on Aug 28, 2017 by ufedor

Hello community,

 

i am working on a design with the LS1043A/46A processor. This processors should be exchangeable at one PCB-Design.

 

Is it needed to use all 4 SDx_REF_CLKx_P/N as input at the LS1046A or can i use the 2 SD1_REF_CLKx_P/N which the LS1043A provide. 

 

Are the 4 SDx_REF_CLKx_P/N depend on anything while using all 8 SerDes-Lanes ?

For Example:

SD1_REF_CLK1_P/N is needed for Lane A-B (SerDes1) and SD1_REF_CLK2_P/N is needed for Lane C-D (SerDes1).

Or can i switch the REF_CLK ?

 

Thanks,

Best regards,

Juergen

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