PYNQ Z1 - max. PL PLL frequency?

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1

I have three PYNQ Z1 boards:

  • one works fine, able to set PL (AXI) PLL to 333.3333MHz
  • another one fails (hangs) with this setting

What is the max. PL (AXI) PLL frequency supported by the PYNQ Z1?
(250 MHz seems to be fine with all of my three boards)

2

Do you mean the PL fabric clocks?
Max is 250MHz according to the specification. You can confirm this in Vivado. Check the range:

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