AM5728: The frequency of CLKDCOLDO from DPLL_HDMI on AM5728

Nomo

Part Number: AM5728

Hello,

Could you tell me the feasibility to output 74.17575MHz from DPLL_HDMI on AM5728?
We want to display 1080p@59.95fps from HDMI.

Best Regards,
Nomo

over 6 years ago

0 jian35385 over 6 years ago

TI__Mastermind 23125 points

Nomo,
The HDMI can support up to 165MHz. Could you clarify what is your data format needed? I think you may need ~148.25MHz to support 1080p, but like to see you calculation based on your data format.
regards
Jian

0 Nomo over 6 years ago in reply to jian35385

Guru 16800 points

Hello Jian-san,

Thank you for your reply.
I also think 148.25MHz is needed to support 1080p.
And, to output 74.17575MHz, OSC1 is needed to be as the clock source to HDMI clock.

Best Regards,
Nomo

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AM5728: The frequency of CLKDCOLDO from DPLL_HDMI on AM5728