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ADV7403 - YPbPr - bad picture on 720p50 & 1080i60

Question asked by davor on Oct 20, 2017
Latest reply on Oct 24, 2017 by davor

Hello everyone,

 

I use ADV7403 for YPbPr and pictures on next resolutions are OK: 480i60, 480p60, 576i50, 576p50, 720p60, 1080i50

but on 720p50 & 1080i60 there are bad vertical picture characteristics, some waves on vertical lines (pictures attached).

 

Referent monitor shows correct picture on all resolutions including problematic ones, so it confirms that signal generator output is OK.

 

Documents used for chip setup are ADV7403_Manual_RevB.pdf & ADV7403_ADV7403@_ADV7341-VER.1.3.txt.

 

Script for 720p50:

    { 0x05, 0x01 },
    { 0x06, 0x0A },
    { 0x1D, 0x47 },
    { 0x3A, 0x20 },
    { 0x3B, 0x80 },
    { 0x3C, 0x5D },
    { 0x6B, 0xC3 },
    { 0x85, 0x19 },
    { 0x86, 0x0B },
    { 0x87, 0xE7 },
    { 0x88, 0xBC },
    { 0x8F, 0x02 },
    { 0x90, 0xFC },
    { 0x0E, 0x80 },
    { 0x52, 0x46 },
    { 0x54, 0x00 },
    { 0x0E, 0x00 },
    { 0xFF, 0x00 }

Script for 1080i60:

    { 0x05, 0x01 },
    { 0x06, 0x0C },
    { 0x1D, 0x47 },
    { 0x3A, 0x20 },
    { 0x3B, 0x80 },
    { 0x3C, 0x5D },
    { 0x6B, 0xC3 },
    { 0x85, 0x19 },
    { 0x86, 0x0B },
    { 0x0E, 0x80 },
    { 0x52, 0x46 },
    { 0x54, 0x00 },
    { 0x0E, 0x00 },
    { 0xFF, 0x00 }

 

Does anyone have some idea what could be wrong here?

 

Thanks in advance!

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