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DS90UB949-Q1: EDID format

Patrick Chen
Mastermind 8875 points
Part Number: DS90UB949-Q1


Hello

           if customer would like to programming EDID on external EEPROM. Is 256 byte I2C EEPROM ok? Hay any programming guide or EDID format to provide to customer ? They need to know how to modify which byte for resolution change. Thank you. 

BR

Patrick

  • 0
    TI__Guru** 109490 points
    Hello,

    Yes 256 bytes is supported.
    please refer to this thread for more details.
    e2e.ti.com/.../679210
  • 0
    TI__Mastermind 30515 points

    Hi, Patrick

    can you refer to below answer?

    e2e.ti.com/.../761584

    bes regards,

    Steven

  • 0 in reply to Steven(Shenzhen) Shi
    Mastermind 8875 points
    Hello Steven

    I still don't know what is EDID data format, ex for which byte we can modify to change resolution ( (12.3 inch, 1920*720, clock freq 20~85Mhz, frame rate=60Hz ) . Could you help provide EDID format that let us know how to change which byte to meet above resolution? Thank you.

    BR
    Patrick
  • 0 in reply to Patrick Chen
    TI__Mastermind 30515 points

    Patrick

    sorry, you should ask for help from the video generator side, we also has no this EDID data for different video resolution, our 949 just is one serializer for electrical medium transmission.

    regards,

    Steven

  • 0 in reply to Steven(Shenzhen) Shi
    Mastermind 8875 points
    Hello

    Below is EDID contents. If customer would like change to 12.3 inch, 1920*720, clock freq 20~85Mhz, frame rate=60Hz . How to change which byte to meet ? Customer request change external EEPROM to EDID modify. Thank you.

    0x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x00 0x53 0x0E 0x49 0x09 0x01 0x00 0x00 0x00
    0x1C 0x18 0x01 0x03 0x80 0x34 0x20 0x78 0x0A 0xEC 0x18 0xA3 0x54 0x46 0x98 0x25
    0x0F 0x48 0x4C 0x00 0x00 0x00 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01
    0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x1D 0x00 0x72 0x51 0xD0 0x1E 0x20 0x6E 0x50
    0x55 0x00 0x00 0x20 0x21 0x00 0x00 0x18 0x00 0x00 0x00 0xFD 0x00 0x3B 0x3D 0x62
    0x64 0x08 0x00 0x0A 0x20 0x20 0x20 0x20 0x20 0x20 0x00 0x00 0x00 0xFC 0x00 0x54
    0x49 0x2D 0x44 0x53 0x39 0x30 0x55 0x78 0x39 0x34 0x39 0x0A 0x00 0x00 0x00 0x10
    0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x57
    0x02 0x03 0x15 0x40 0x41 0x84 0x23 0x09 0x7F 0x05 0x83 0x01 0x00 0x00 0x66 0x03
    0x0C 0x00 0x10 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
    0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
    0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
    0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
    0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
    0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x0
  • 0 in reply to Patrick Chen
    Mastermind 8875 points

    Hello

              if customer mount external EEPROM, they would like to read external EERPOM EDID then display panel. So does customer need to switch mode 5 to ON? Thank you.  

    BR

    Patrick

    BR

    Patrick

  • 0 in reply to Patrick Chen
    TI__Guru** 103215 points
    Hello Patrick,

    To read external EDID from the EEPROM at the remote display, set the 949 MODE0 = 1. For MODE1, you must set REM_EDID_LOAD = 1 and EXT_CTL = 1 as well, plus set the COAX bit as desired for your system. Please reference the datasheet section 7.4.1

    Best Regards,
    Casey