• State TI Thinks Resolved
  • Locked Locked
  • Replies 7 replies
  • Answers 3 answers
  • Subscribers 35 subscribers
  • Views 1071 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CCS/DS90UB941AS-Q1: DS90UB941AS-Q1 HV mode no picture issue

Lawrence He
Genius 3280 points
Part Number: DS90UB941AS-Q1

Tool/software: Code Composer Studio

Dear,

our client use DS90UB941AS-Q1 and DS90UB948 as below function block:

now we have question, why we setting HV Mode was no picture, but we change DE Mode was work well.


is about register setting or H/W setting?

we just dump file,

941 okay dump file for DE Mode.

Fullscreen 0605_941_ok.txt Download 
0x10
0x00
0xda
0x00
0x00
0x68
0x00
0x00
0x01
0x8e
0x00
0x67
0x30
0x00
0x00
0x00
0x00
0x00
0x8b
0x00
0x00
0xfe
0x9e
0x7f
0x7f
0x01
0x00
0x0e
0x00
0x01
0x00
0x0b
0x00
0x25
0x00
0x00
0x00
0x00
0x00
0x01
0x20
0x20
0xb8
0x00
0x00
0xa5
0x5a
0x00
0x09
0x00
0x05
0x0c
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x81
0x02
0x10
0x90
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x8c
0x16
0x00
0x00
0x00
0x02
0x00
0x00
0x02
0x00
0x00
0xd9
0x00
0x07
0x06
0x44
0x42
0x22
0x02
0x00
0x00
0x10
0x00
0x0e
0x03
0x00
0x00
0x00
0x00
0x00
0x00
0x20
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x7f
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
0x82
0x00
0x78
0x00
0x41
0x20
0xc0
0x00
0x00
0x00
0x00
0x02
0xff
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x82
0x00
0x68
0x38
0x41
0x00
0x00
0x00
0x00
0x00
0x00
0x02
0x00
0x00
0x5f
0x55
0x42
0x39
0x34
0x31
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00

948 is okay dump file for DE mode

Fullscreen 0605_948_ok.txt Download 
0x04
0x00
0xf0
0xfe
0x1e
0x00
0x34
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x01
0x00
0x00
0x03
0x19
0x00
0x00
0x00
0x00
0x40
0x20
0x08
0x00
0x83
0x84
0x01
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x90
0x25
0x01
0x00
0x00
0x8a
0x00
0x00
0x00
0x1f
0x20
0xe0
0x23
0x00
0x43
0x03
0x03
0x00
0x60
0x88
0x00
0x00
0x0f
0x02
0x00
0x08
0x00
0x00
0x63
0x00
0x03
0x10
0x00
0x01
0x80
0x00
0x00
0x00
0x00
0x7f
0x20
0x20
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x10
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x07
0x07
0x08
0x00
0x00
0x00
0x00
0x00
0x00
0x02
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
0x8c
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
0xc0
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
0x5f
0x55
0x42
0x39
0x34
0x38
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00

941 fail dump file for HV Mode:

Fullscreen 0605_941_fail.txt Download 
0x10
0x00
0xda
0x00
0x00
0x58
0x00
0x00
0x01
0x13
0x00
0x67
0x20
0x00
0x00
0x00
0x00
0x00
0x8b
0x00
0x00
0xfe
0x9e
0x7f
0x7f
0x01
0x00
0x0f
0x00
0x01
0x00
0x0b
0x00
0x25
0x00
0x00
0x00
0x00
0x00
0x01
0x20
0x20
0xb0
0x00
0x00
0xa5
0x5a
0x00
0x09
0x00
0x05
0x0c
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x81
0x02
0x10
0x90
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x8c
0x16
0x00
0x00
0x00
0x02
0x00
0x00
0x02
0x00
0x00
0xd9
0x00
0x07
0x06
0x44
0x3b
0x22
0x02
0x00
0x00
0x10
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x20
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x7f
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
0x82
0x00
0x38
0x00
0x41
0x20
0xc0
0x00
0x00
0x00
0x00
0x02
0xff
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x82
0x00
0x28
0x38
0x41
0x00
0x00
0x00
0x00
0x00
0x00
0x02
0x00
0x00
0x5f
0x55
0x42
0x39
0x34
0x31
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00

948 fail dump file for HV Mode:

Fullscreen 0605_948_fail.txt Download 
0x04
0x00
0xf0
0xfe
0x1e
0x00
0x34
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x01
0x00
0x00
0x03
0x10
0x90
0x00
0x99
0x99
0x40
0x20
0x08
0x00
0x83
0x84
0x01
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x90
0x25
0x01
0x00
0x00
0x8e
0x00
0x00
0x00
0x37
0x20
0xe0
0x23
0x00
0x43
0x03
0x03
0x00
0x60
0x88
0x00
0x00
0x0f
0x82
0x00
0x08
0x00
0x00
0x63
0x00
0x03
0x10
0x00
0x01
0x80
0x00
0x00
0x00
0x00
0x7f
0x20
0x20
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x10
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x07
0x07
0x08
0x00
0x00
0x00
0x00
0x00
0x00
0x02
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
0x8c
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
0xc0
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
0x5f
0x55
0x42
0x39
0x34
0x38
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00

also we check datasheet Register, but cannot help for us to solve issue .

DS90UB941 register

DS90UB948

If any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence.

  • 0
    TI__Mastermind 30515 points

    Hi Law,

    sorry we can't open your "dumped .txt file", it sounds these text include many 0x00...?

    before replying your issue, pls let's know which customer is using it?

    for your issue, pls note 948 can't change the DE mode or HV sync. mode output, it is programmed by MT2712 in your system. 941as/948 just is one pair SerDes to transmit the input video from MT2712 and output video to TCON but it can't change the video mode. for reg. 0x29, it should be set when you use the FRC function based on the MT2712 output video format (HV mode or DE mode).

    Steven

  • 0 in reply to Steven(Shenzhen) Shi
    Intellectual 630 points

    HI junqiang,

    941's input is mipi,I think 941/948 need to parse mipi sync event to lvds DE/HS/VS. does MIPI-DSI have DE or HV packets?

    I config MT2712 output continue clock, no-burst sync event mode.

  • 0 in reply to Steven(Shenzhen) Shi
    Intellectual 630 points

    And do you have the newest datasheet for 941, in TI.com the datasheet seems not intact, some register detail is missing,thanks

  • 0 in reply to Steven(Shenzhen) Shi
    Genius 3280 points

    Hi, Steven

    (deleted [LE])

    and also we check 941's input is mipi,I think 941/948 need to parse mipi sync event to lvds DE/HS/VS. does MIPI-DSI have DE or HV packets?

    I config MT2712 output continue clock, no-burst sync event mode.

    And do you have the newest datasheet for 941, in TI.com the datasheet seems not intact, some register detail is missing,

    If any suggestion, Please advise me.

    Thanks,

    Best regards,

    Lawrence.

  • 0 in reply to Lawrence He
    TI__Mastermind 30515 points

    Hi, Lawrence,

    1. 941as can receiver 3 input modes which are specified in MIPI, including sync event, sync pulse and burst mode. for your issue, the DSI signal package is sent from MT, you need check it with SoC.

    2. sorry the d/s of 941as in website is last. what do you see any issue here or unclear here? thanks.

    Steven

  • 0 in reply to Steven(Shenzhen) Shi
    Intellectual 630 points

    Hi Steven，


    1. can you give us to table a proposal which information was wrong or missing in our mipi output?

    Because of we can bringup the DE panel,so I think our mipi output from MT2712 contain the sync information,I don't know which point need we to check.

    2.941as datasheet in website have no description for register 0x7E----0xFF

    Thanks

    B&R

    Enson

  • 0 in reply to enson Steven
    TI__Mastermind 30515 points

    Enson,

    1. 941/948 is one bridge to transmit the input video signals from DSI port to OpenLDI output. In 948 side, it has no video timing re-gen., in 941as side, dependent on the input DSI timing mode from SoC, 941as can re-gen. input video timing. if SoC output is sync. pulse mode, 941as can recover it well, for sync. event mode, 941as can generate the video input timing with reg. setting. pls check DSI indirect reg. 0x20 in 941as d/s.

    2. yes, 7E and 0xFF are reserved, which do not impact your usage on 941as so these are NOT public.

    Rgrds,

    Steven