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Contributor
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Registered: ‎02-24-2018

ZCU106 DDR Frequency

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Hi all, 

I am using ZCU106 to do some designs. However, I found that the DDR frequency maybe not big enough. Is there anyone who knows how to change the DDR's frequency via Xilinx Vivado Block Design Zynq UltraScale MPSoC IP kernel like the attached picture or other ways?

Thanks WeChat Photo Editor_20200513223740.jpg

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Moderator
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Registered: ‎11-09-2017

Re: ZCU106 DDR Frequency

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Hi @crystal 

https://www.xilinx.com/support/documentation/data_sheets/ds925-zynq-ultrascale-plus.pdf

Refer to Table 30: PS DDR Performance

 

Regards
Pratap

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ps_ddr_frq.PNG
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Registered: ‎11-09-2017

Re: ZCU106 DDR Frequency

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Hi @crystal 

There is separate configuration options for DDR, please refer to "DDR configuration" to change the memory interface frequency.  

Regards
Pratap

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ps_ddr_clock.png
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Contributor
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Registered: ‎02-24-2018

Re: ZCU106 DDR Frequency

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Dear @rpr ,

Thanks very much for your help. I noticed this configuration page. As shown in the last picture, the frequency is 533.5 Mhz. If I want to change it to around 900 MHz, I should change which value, the Requested device frequency value? How can I find the range of that value?WeChat Image_20200513230300.png

Thanks again.

Crystal

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Moderator
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Registered: ‎11-09-2017

Re: ZCU106 DDR Frequency

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Hi @crystal 

https://www.xilinx.com/support/documentation/data_sheets/ds925-zynq-ultrascale-plus.pdf

Refer to Table 30: PS DDR Performance

 

Regards
Pratap

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ps_ddr_frq.PNG
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Contributor
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Registered: ‎02-24-2018

Re: ZCU106 DDR Frequency

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Dear @rpr ,

I notice that the limitation of 1066 Mhz. For now, I think the problem is about the PLL shown in the first picture. I will try to figure this out. Thanks again.

Regards,

Crystal

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