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Visitor magedsallam
Visitor
1,273 Views
Registered: ‎03-06-2018

VCU118 IBERT QSFP with active cables ( No link)

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Hi all,

 

                   I have VCU118 in hand  and I have done the IBERT test based on XTP440 and everything works fine , but then I  tried  to connect the two QSFPs to each other by an active cable   using Mellanox MFA1A00 100G cable  , I did modify the design to be with 25gb/s per lane , which is working with the loopback but not working with the active cable  ,  Anyone knows what is needed to make it work with the active cable?

 

qw.png

 

 

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Visitor magedsallam
Visitor
1,642 Views
Registered: ‎03-06-2018

Re: VCU118 IBERT QSFP with active cables ( No link)

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Problem solved _ just had to program  QSFP Reset , low power and  mode sel pins

View solution in original post

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Adventurer
Adventurer
1,235 Views
Registered: ‎02-06-2018

Re: VCU118 IBERT QSFP with active cables ( No link)

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@magedsallamWhat output is being shown in the picture? What are links 24 and 25?

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Visitor magedsallam
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1,214 Views
Registered: ‎03-06-2018

Re: VCU118 IBERT QSFP with active cables ( No link)

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These are the links of 2  QSFP lanes from Quad 231 and Quad 232   there are 6 more lanes with the same result

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Xilinx Employee
Xilinx Employee
1,179 Views
Registered: ‎01-10-2012

Re: VCU118 IBERT QSFP with active cables ( No link)

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Hi @magedsallam

 

To isolate what the issue is, can you try PCS/PMA loopback ? what is the status of the Q/CPLL Lock ? Probably an extended snapshot showing all the parameters of the H/W manager Serial IO GUI would help. 

Hope you have the free running system clock too? 

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Visitor magedsallam
Visitor
1,643 Views
Registered: ‎03-06-2018

Re: VCU118 IBERT QSFP with active cables ( No link)

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Problem solved _ just had to program  QSFP Reset , low power and  mode sel pins

View solution in original post

Adventurer
Adventurer
1,099 Views
Registered: ‎02-06-2018

Re: VCU118 IBERT QSFP with active cables ( No link)

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@magedsallam May you please share how did you do that? what reference did you use?