ADV7800_1080p_10bit Resolution Support

Hi,

  ADV7800 analog front end comprises four 10-bit with maximum pixel clock rate of 150 MHz Noise Shaped Video® ADCs1 that digitize the analog video signal before applying it to the SDP or CP, So it cannot support "1080p60 10bit" since it will exceed maximum pixel clock supported by ADV7800(150Mhz).

Can ADV7800 support to output these Clock by internal  PLL?

      Please refer "Table 8: PLL Recommended Settings for SD, PR, and HD Modes"  for 1080P/1080i at Vertical Frequency  of 60Hz and 50Hz (Hardware Manual Page 35).

Note:

  Generally Pixel clock can be calculated by using below formula,

     Pixel clock= Horizontal total pixels * Vertical total pixels * vertical frequency

Thanks,

Poornima

Dear Poorinima-san,

Noted, thank you for your reply.

And I undestadn your general advice for this pixel clock caliculation.

Thanks and BR Kida 

Dear Poorinima-san,

Noted, thank you for your reply.

And I undestadn your general advice for this pixel clock caliculation.

Thanks and BR Kida 

Dear Poornima-san,

Can AD9984A support 10bit depth at 1080p50/59.94/60Hz?

I checked the datasheet, there are not limitation description of 10bit depth on datasheet.

Thanks and Best Regards,

Kida

Hi IsshinKida-San,

        Yes, AD9984A  can support 10bit depth at 1080p50/59.94/60Hz.

        Please note "AD9984A is a complete 10-bit, 170 MSPS, monolithic analog interface optimized for capturing YPbPr video and RGB graphics signals. Its 170 MSPS encode rate capability and full power analog bandwidth of 300 MHz support all HDTV video modes up to 1080p, as well as graphics resolutions up to UXGA (1600 × 1200 at 60 Hz)"

Thanks,

Poornima

Dear Poornima-san,

Noted, thank you for your reply.

I understand AD9984A peformance.

Thanks and Best Regards,

Kida