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Newbie liuxiaoyi
Newbie
461 Views
Registered: ‎12-24-2018

MMCM power down mode

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Hi,

   i am now using MMCM ip core ,i chose power_down enable to reduce my power consumption, when asserted power_down ,no output clk there ,then pull down  power_down ,then when the locked is asserted,the output clk is stable.

    Now, i want to know how long time it will take to awakeup(the time from pull down the power_down signal to locked is valid ),through modelsim,i konw the higher the clock frequency, the longer the time required. Is there any documentation on this issue?

Looking forward to your answer!Thanks!

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Xilinx Employee
Xilinx Employee
412 Views
Registered: ‎08-25-2010

回复: MMCM power down mode

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Hi @liuxiaoyi

https://www.xilinx.com/support/answers/55137.html

And the MMCM_TLOCKMAX(MMCM Maximum Lock Time) for 7 series is 100us.

Thanks
Simon
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Xilinx Employee
Xilinx Employee
413 Views
Registered: ‎08-25-2010

回复: MMCM power down mode

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Hi @liuxiaoyi

https://www.xilinx.com/support/answers/55137.html

And the MMCM_TLOCKMAX(MMCM Maximum Lock Time) for 7 series is 100us.

Thanks
Simon
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Newbie liuxiaoyi
Newbie
370 Views
Registered: ‎12-24-2018

回复: MMCM power down mode

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Thanks!

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