DS90UB947-Q1: FPD Link Frequency vs Pixel Clock

Akihiro Hirata

Expert 6210 points

Part Number: DS90UB947-Q1

Hi Team,

Q1. If the pixel clock into the US947-Q1 is 76.2MHz for example, FPD Link frequency becomes 76.2MHz x 35, correct?

Q2. Are there any chance that FPD Link frequency becomes 76.2MHz x 21?

Thank you.

Regards,

Hirata

over 4 years ago

+1 Casey McCrea over 4 years ago

TI__Guru** 103215 points

Hello Akihiro,

For the 947, it depends on if you are operating in single FPD or dual FPD mode. In single mode, the FPD rate will be PCLK*35. For dual FPD mode, the rate will be PCLK*35/2 for each FPD lane.

PCLK*21 is not a supported rate

Best Regards,

Casey

0 Akihiro Hirata over 4 years ago in reply to Casey McCrea

TI__Expert 6210 points

Thanks for your answer, Casey-san!

0 Akihiro Hirata over 4 years ago in reply to Akihiro Hirata

TI__Expert 6210 points

Casey-san,

Let me check.

The portion that Single FPD mode run at PCLK x 35 is below, correct?

The portion that dual FPD mode run at PCLK x 35/2 is below, correct?

If there is other portion that describes better, I would like to know where it is.

Thank you.

Regards,

Hirata

+1 Casey McCrea over 4 years ago in reply to Akihiro Hirata

TI__Guru** 103215 points

Hello Hirata,

Yes, that is the correct section

Best Regards,
Casey

0 Akihiro Hirata over 4 years ago in reply to Casey McCrea

TI__Expert 6210 points

I understood. Thank you Casey-san!

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DS90UB947-Q1: FPD Link Frequency vs Pixel Clock