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Visitor
Visitor
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Registered: ‎06-08-2018

Can the v7-690t-2ffg1927 suporrt 80 GTHs?

recently I have a project,use 40 GTHs,and the 690t suporrts 80 GTHs. Below is my parameters setting.

RX:line rate 6.25G;

coding:8b/10b;

internal data with:32bits;

PLL seletion:Quad PLL;

gth count:32 gths.

 

TX:line rate 5.0G;

coding:8b/10b;

internal data with:32bits;

PLL seletion:Quad PLL;

gth count:40 gths.

But when I instanced the GTH IP core and implement the project,the bufg resource can not meet the device, and the MAP ERROR : TOO MANY COMPS OF TYPE "BUFG" TO FOUND TO FIT THIS DEVICE.

Design summary says the project uses 46 bufgs,but the device only has 32 bufgs.

And I check the gt_rxusrclk_source.v ,I found that RX IP core uses 33 bufgs and the TX IP core uses 11 bufgs.

So I have a question, 7 series family says 690T has 80 GTHs, I want to know how do I correctly use the GTH IP core and make the bufg resource meet my project ? 

I was very impatient to the way to solve this question,and it is important for me to know why .

thank you very much.

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Guide
Guide
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Registered: ‎01-23-2009

Please do not post the same question to multiple boards.

 

For any other followup posts, please post them to the original thread

 

https://forums.xilinx.com/t5/Serial-Transceivers/v7-690t-2ffg1927-suporrt-80-GTHs/m-p/863720

 

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