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Observer egonendik
Observer
982 Views
Registered: ‎02-09-2016

max GTH output freq

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Hello,

I have a board with XCKU115-2FLVB2104I. I need to drive a DAC with this FPGA the DAC frequency that I need is 750MHz. I was wondering if it is possible to generate and deliver 750MHz clock out of GTH through gtrefclko or gtrefclk1. If this is not possible can you please tell me what the max frequency I can go up to is. Thank you.

Erdal

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Scholar u4223374
Scholar
1,288 Views
Registered: ‎04-26-2015

Re: max GTH output freq

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See Table 24, DS892. For that chip it'll be 1250MB/s, or a 625MHz clock.

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Scholar u4223374
Scholar
963 Views
Registered: ‎04-26-2015

Re: max GTH output freq

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From the datasheet, you don't even need the GTH - you can drive 1600Mbps (ie sufficient for an 800MHz clock signal) through a regular HP I/O port in native LVDS mode.

Observer egonendik
Observer
902 Views
Registered: ‎02-09-2016

Re: max GTH output freq

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Thank you very much. What is the max frequency I can get out of a HR bank then?

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Scholar u4223374
Scholar
1,289 Views
Registered: ‎04-26-2015

Re: max GTH output freq

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See Table 24, DS892. For that chip it'll be 1250MB/s, or a 625MHz clock.

View solution in original post