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JFK's avatar
JFK
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4 years ago

Clocks for 10M08SAU169C8G ADC's core

Hi,, I'm using the MAX 10 10M08SAU169C8G in a new design. The documentation on the ADC (core only) is not clear. to me. Would someone tell me what peripheral clock frequency is required when ...
sstrell's avatar
sstrell
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4 years ago

If you choose 10 MHz for the clock, that's what you need to supply to the IP from the c0 output of the PLL in the device.

  • JFK's avatar
    JFK
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    4 years ago

    Hello sstrell,

    The ADC on the 10M08SAU169C8G takes two clocks. The first clock is from the output of PLL1 c0 and it's set to 10MHz. The second clock is the peripheral clock. I still don't know what frequency I need to feed to the ADC's peripheral clock.

    I tried using 10MHz as the peripheral clock,. 10MHz didn't work as the peripheral clock. I also tried 1MHz which didn't work either. Then I tried to discover which frequency will work. I found that 3 to 7MHz worked but I don't feel comfortable using these odd frequencies.

    My request is; What peripheral clock frequency is needed when using 10MHz as the adc_pll_clock input?

    Thanks.