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Visitor julgev
Visitor
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Registered: ‎01-03-2019

How to achieve maximum communication speed over double QSFP channels on VCU1525

Hi,

 

SW -> Vivado 2018.3

HW -> VCU1525

 

I am planning to utilize all possible bandwidth, which VCU1525 can offer through its double QSFP channels.

I am using Aurora controller.Aurora.jpg

One thing, which makes me wonder is the combination of INIT clk + 512bit tdata size.

250Mhz is the max I can define for 8 lanes. Tool does not allow more.

250 x 512 / 1024 = 125Gbit / s

 

Am I missing something, as I cannot understand how am I supposed to achieve theoritical 200Gbit / s bandwidth with such configuration?

 

Thanks.

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