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DS90UB948-Q1: cant display on 1920x560@60

Piero Yu
Intellectual 960 points

Part Number: DS90UB948-Q1

Currently, it can display 1920*1080, but changed to 1920x560@60, no display, even set color bar, no display.
But the lock signal is OK , and can find the data is transmit.
Any suggest？thanks.

Is it the EDID issue? or how to reivse this?

  • 0
    TI__Mastermind 30515 points
    It could be. please check the EDID is updated with the 1920x560 format. also, pls check:
    1. UB949's HDMI status reg., you can download all the registers to us for analysis when the display can't work;
    2. how about the panel's resolution? can it support the 1920x560?
    3. for 1920x1080, do you have any setting on UB949 or UB948?
    4. how do you change the video from 1080 to 560? is it from UB949 side?

    Steven
  • 0 in reply to Steven(Shenzhen) Shi
    Intellectual 960 points
    1.
    No size specified (using byte-data access)
    0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
    00: 18 00 00 fa 80 00 58 82 82 00 12 00 07 23 33 05 ?..??.X??.?.?#3?
    10: 00 00 00 88 00 01 fe 1e 7f 7f 01 00 06 00 01 00 ...?.??????.?.?.
    20: 0b 00 25 00 00 00 00 00 01 20 20 b8 00 00 a5 5a ?.%.....? ?..?Z
    30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    40: 14 55 00 00 80 00 00 00 00 00 00 00 00 00 00 00 ?U..?...........
    50: 97 a1 1e 00 28 0c 15 00 00 00 dd 20 02 06 44 19 ???.(??...? ??D?
    60: 22 02 00 00 15 04 00 00 00 00 00 00 00 00 00 00 "?..??..........
    70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    c0: 00 00 a8 00 28 00 00 60 c0 00 00 00 00 00 ff 00 ..?.(..`?.......
    d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    e0: 00 00 a8 00 28 38 00 00 00 00 00 00 00 00 00 00 ..?.(8..........
    f0: 5f 55 42 39 34 39 00 00 00 00 00 00 00 00 00 00


    2. can support 1920x560
    3. no special setting
    4. just use color bar, but can't work.
  • 0 in reply to Piero Yu
    TI__Mastermind 30515 points
    Sure, UB949 can support the 1920x560 patten, you can use UB949's pattern generation to try this test.
    from the reg. value, UB949's HDMI module is working.

    regards,
    Steven
  • 0 in reply to Steven(Shenzhen) Shi
    Intellectual 960 points
    We used the pattern gen (color bar)to test, but can't work.