HDMI GT reference clock.

[sunkim]

Dear expert.

I'm designing the 4K HDMI (60Hz) with TX only.

I wll use the Video Phy Controller with HDMI 2.0 IP.

Video PHY Controller don't have the reference clock indicator. this have only the number of pixels per clock.

I guess that the clock is 297MHz(gt referecnce clock) . However, I guess that the pixel per clock is related to reference clock speed.

What speed we can give to gt refence clock with 1 or 2 pixel per **bleep**??   (example, 148.5Mhz or 297Mhz or 74.25MHz and so on)

There was no comment about the reference clock(GTH3) on the datasheet.

I will do not use the PLL for reference clock due to TX only. I guess that I don't need to use PLL with recovery clock method.

Thanks,

Sun

[florentw]

HI @sunkim,

Did you check the clocking section of the HDMI TX SS PG235? It contains the equations Pixel clock -> Video clock

Hope that helps,

Regards,

Florent

[sunkim]

Thanks for your answer.

I solved this.

Sun

[florentw]

Hi @sunkim,

Could you close this thread marking it as solved?

Thanks,

Florent