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Observer dcho
Observer
337 Views
Registered: ‎05-17-2018

Interlaken max data rate at 6 Gbps VCU118

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Hello -

I am working on a VCU118 and I am using the interlaken core embedded in the hardware.

I have the interlaken implemented and everything but unfortunately, the data rate that i am getting is very slow compared to the proposed data rate on the documentation.  My configuration is below:

Capture.JPG

I am only able to get a max data rate of 6 Gbps PER lane or about 24 Gbps total for all four lanes.

On the documentation, it proposes 25 Gbps PER lane and 100 Gbps total for four lanes but i am not able to get even close to that.

I have tried many different configurations but they all give me a max data rate of 6 Gbps PER lane.  I have tried the in band and out of back flow control, burst mode, and different burst lengths but nothing has gotten me above 6 Gbps PER lane.  This max data rate has been observed in both vivado simulation and hardware.

 

Thank you.

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1 Solution

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Xilinx Employee
Xilinx Employee
250 Views
Registered: ‎09-05-2018

Re: Interlaken max data rate at 6 Gbps VCU118

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Hey @dcho,

How did you come up with the 6Gbps number?

I ran the example design with your settings and see data on the GT clocking changing every 38.78 ps or ~25.7 Ghz.

Can you give more detail?

Nicholas Moellers

Xilinx Worldwide Technical Support

View solution in original post

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5 Replies
Xilinx Employee
Xilinx Employee
320 Views
Registered: ‎09-05-2018

Re: Interlaken max data rate at 6 Gbps VCU118

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Hey @dcho,

Is this using the example design? Can you check what the data rate is if you right-click the IP and select "Open IP Example Design"?

Nicholas Moellers

Xilinx Worldwide Technical Support
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Observer dcho
Observer
316 Views
Registered: ‎05-17-2018

Re: Interlaken max data rate at 6 Gbps VCU118

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Yes it is with the example design.

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Xilinx Employee
Xilinx Employee
251 Views
Registered: ‎09-05-2018

Re: Interlaken max data rate at 6 Gbps VCU118

Jump to solution

Hey @dcho,

How did you come up with the 6Gbps number?

I ran the example design with your settings and see data on the GT clocking changing every 38.78 ps or ~25.7 Ghz.

Can you give more detail?

Nicholas Moellers

Xilinx Worldwide Technical Support

View solution in original post

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Observer dcho
Observer
247 Views
Registered: ‎05-17-2018

Re: Interlaken max data rate at 6 Gbps VCU118

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Hello -

Sorry i was making a mistake in my testing environment.

I was able to resolve this issue.

Thank you.

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Xilinx Employee
Xilinx Employee
231 Views
Registered: ‎09-05-2018

Re: Interlaken max data rate at 6 Gbps VCU118

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Hey,

That's great! Glad you got it worked out.

Nicholas Moellers

Xilinx Worldwide Technical Support
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