DP83TG720R-Q1: output 125MHz clock

Daniel Wang (auto)

Part Number: DP83TG720R-Q1

Tool/software:

Hello team,

If 720R can support 125MHz clock output in CLK_O pin? I found related description in datasheet:

Is it right to set clk_o_clk_source as 011/100, and clk_o_gpio_ctrl as 001?

What's the accuracy of the 125MHz clock?

Thanks!

Regards,

Daniel Wang

0 Melissa Chang 4 months ago

Hi Dnaiel,

What are you trying to output 125 MHz for? Is this for PMA compliance testing?

You can find the correct register writes here, in our OA app note

Best regards,

Melissa

0 Daniel Wang (auto) 4 months ago in reply to Melissa Chang

Hello Melissa,

Customer just want to use the 125MHz output as MCU clock, not for PMA test, so they want to know the accuracy.

Thanks!

Regards

Daniel Wang

0 David Creger 4 months ago in reply to Daniel Wang (auto)

Hi Daniel,

Andreas has created another thread, we are taking this up directly with customer.

Thanks,

David

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