AD9889B hdmi Interlaced output question

The HDMI analyzer shows that the format of ad9889b hdmi output is progressive in 1080i50/59.94/60 and 576i/480i.

it shows that the vtotal of 1080i50/60 is 562, the vtotal of 576i50 is 313, the vtotal of 480i60 is 262,  

Hdmi output timing is reference cea 861. 

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  • 0
    •  Analog Employees 
    on Apr 10, 2019 7:01 AM over 1 year ago

    Hi,

     AD9889B is HDMI/DVI transmitter, So it can supports all resolutions from 480i(interlaced) to 1080p(progressive) and UXGA at 60 Hz.

     At receiver side have you enabling the i2p feature?

     

    Thanks,

    Poornima

  • Hi,Poornima

      thanks for your reply.

      1. It is normal for the hdmi interlaced output to be directly connected to the variety of monitors;but the hdmi  analytical instrument considers it to be a progressive signal.

      2. The hdmi output is directly connected to the analytical instrument

  • hi,

        Poornima,thanks for your reply.

        a) After setting the VID value for 1080p25 and 1080p30, are you recognizing the interlaced output is incorrect? Am i right ?

        To be precise, I set the VID to manual mode for all resolution output, only the interlaced output has problems.

        b) But before configuring the VID in user mode,you could get correct interlaced output? My understanding is correct ?

        yes, you are right.

        d) Or by using AD9889B chipset,are you facing the issue with analytical instrument?

        yes.

  • 0
    •  Analog Employees 
    on Apr 24, 2019 2:26 PM over 1 year ago in reply to edison

    Hi,

     Please let us know your VID manual setting.whether we miss anything.

    Thanks,

    Poornima

  • Hi,

      Below is the code for the VID setting.

    //-----------------------------------------------------------------------------------------
    void AD9889DisablePixelRp(u8 Format)
    {
    u8 Addr = 0x3b;
    u8 PixelRp=0;

    PixelRp = Ad9889Read(Addr);

    if(Format > 2)
    {//bit[6:5] -> 2'b11; bit[4:3]/bit[2:1] -> 2'b00
    PixelRp = (PixelRp&0xf5) | 0x60;
    }
    else
    {//bit[6:5] -> 2'b11; bit[4:3]/bit[2:1] -> 2'b01 //Set Pixel Repetition to x2 when 480i and 576i output,
    PixelRp = PixelRp | 0x6a;
    }
    AD9889WriteByte(Addr, PixelRp);
    }
    //-----------------------------------------------------------------------------------------
    //Format
    //0-625i50
    //1-525i60
    //2-625i50

    //3-720p24
    //4-720p25
    //5-720p30
    //6-720p50
    //7-720p60

    //8 -1080i50
    //9 -1080i60

    //10-1080p24
    //11-1080p25
    //12-1080p30
    //13-1080p50
    //14-1080p60
    //ff-1080i50

    u8 table_vid[]={21,6,21, 60, 61, 62, 19, 4, 20, 5, 32, 33, 34, 31, 16};

    void AD9889SetVID(u8 Format)
    {
    u8 Addr = 0x3c;
    u8 Vid;
    u8 Temp=0;

    Format = Format & 0x0f;

    Vid = table_vid[Format]; //Format is above

    AD9889DisablePixelRp(Format);
    DelayXms();
    DelayXms();

    Temp = Ad9889Read(Addr);
    Vid = (Temp&0xc0) | Vid;
    //0x3c bit[5:0]
    AD9889WriteByte(Addr, Vid);
    }

  • Hi,Poornima

        Any progress on my questions ? 

  • +1
    •  Analog Employees 
    on May 8, 2019 12:11 PM over 1 year ago in reply to edison

    Hi,

      It doesn't seems any mistake in configuration.And also if mistake in configuration, you could get incorrect output in monitor also.

      Have you verified the same with some other analytical instrument?

      By direct connection , you can able to see the correct VIC ? Please crosscheck it in your side.

      Please also note as i said earlier, AD9889b is not recommended for new designs.It is being replaced by the ADV7511.

      Please let take a look for AD9889 change over guide(AD9889B to ADV7513 Changeover Guide) at ez.analog.com/.../adv7513-design-support-files

    Thanks,

    Poornima

Reply
  • +1
    •  Analog Employees 
    on May 8, 2019 12:11 PM over 1 year ago in reply to edison

    Hi,

      It doesn't seems any mistake in configuration.And also if mistake in configuration, you could get incorrect output in monitor also.

      Have you verified the same with some other analytical instrument?

      By direct connection , you can able to see the correct VIC ? Please crosscheck it in your side.

      Please also note as i said earlier, AD9889b is not recommended for new designs.It is being replaced by the ADV7511.

      Please let take a look for AD9889 change over guide(AD9889B to ADV7513 Changeover Guide) at ez.analog.com/.../adv7513-design-support-files

    Thanks,

    Poornima

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