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Zynq fpga fabric clock speed?

Former Member

Hi,

I have seen mention of 100 Mhz in the forums.

But what would be a realistic max frequency that the zynq logic fabric could be usably clocked out on the zedboard?

Thanks

  • 0

    Hi,

    I need to know more about your application.  Are you trying to send a clock OUT of the Zedboard to another board?  

    Or are you trying to find out the max clock rate of the Zynq chip itself?  The max value will depend on the input clock rate - since the PLLS can be fed from various sources it will depend on the input clock.  The FMC as well as PMOD connectors have the ability to INPUT a clock INTO the PL fabric, the rate will depend on the input if you are planning to use those.

    --Dan

  • 0

    Hmm, not really sure about the exact terminology. I'm trying to get a gauge of how fast this zynq's fpga is - what the max clock frequency of the fpga fabric is, I guess clocked internally, but whatever gives maximum performance.

  • 0

    What are you comparing against?
    The Zynq-7010 to Zynq-7020 has Artix-7 fabric, it is comparable to that.  The Zynq-7030 and above use Kintex-7 Fabric and is comparable to that.

    Are you just looking for the maximum clock rate?  You can find that in the Zynq-7000 AP SoC data sheets - again, depends on which chip you are looking at.

    Performance is a bit subjective on FPGA devices, since you can parallel the code and there is a dependence on what you are doing.  For example, "Peak DSP Performance" ranges from 100 GMACs to 2622 GMACs depending on chip selection.

    If you can tell me more about your application or what you are trying to determine as "performance" I can help guide to to your answer.

    --Dan