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ADV7511: Support for Non-Standard Resolution

Question asked by LalithaaShree on Mar 28, 2018
Latest reply on Mar 29, 2018 by GuenterL

Hi,

   I have to convert a RGB888 video with active video resolution of 454 x 380 with PCLK 17 MHz @60 fps.

   But at the output I am observing a resolution of 452 x 380.

  •       May I know why it is so? Is that due to the aspect ratio setting?
  •       And the two pixels lost per line, whether it is at the beginning or end of the line or somewhere in between?
  •       Is there any way to handle this non-standard resolution without loosing pixels?
  •       I have also shared the register values programmed below:

            Master_Write(0x41,0x10); // Power Up Transmitter
          
            //Fixed Registers to be set on Power Up
            Master_Write(0x98,0x03);
            Master_Write(0x9A,0xE0);
            Master_Write(0x9C,0x30);
            Master_Write(0x9D,0x61);
            Master_Write(0xA2,0xA4);
            Master_Write(0xA3,0xA4);
            Master_Write(0xE0,0xD0);
            Master_Write(0xF9,0x00);
          
            //Setup Video Input Mode
            Master_Write(0x15,0xF0); //Video Format ID (24 bit RGB 4:4:4 or YCbCr 4:4:4 Separate Syncs) and I2S frequency Invalid
            Master_Write(0x16,0x30); //Input Color depth (8 bit)
            Master_Write(0x17,0x00); //Aspect ratio of input Video (Set for 4:3 )
          
            // Setup Video Output Mode
            Master_Write(0x18,0x46); //CSC Disable
            Master_Write(0xAF,0x06); //HDMI Mode Select        

   Thanks in Advance!

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