• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 229 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.

DS90UB949A-Q1EVM: DS90UB949A-Q1EVM:DS90UB948 Different pixel clock

xinyu wu
Prodigy 115 points
Part Number: DS90UB949A-Q1EVM
Other Parts Discussed in Thread: ALP

Dear Ti,

The pixel clock from my HDMI signal to the EVM adapter board is about 139hz, but after conversion to the FPD link signal, the pixel clock becomes about 131hz.

I don't know why? Can you analyze it for me?

Is it because of my display parameters? It is consistent with standard 1920 × The display resolution of 1080 is slightly different.

So I want to confirm with you: do I need to brush EDID based on this parameter into EVM board again.

If necessary, can you help me provide the EDID of this parameter?

Thank you very much.

Xinyu.

  • 0
    Prodigy 115 points

    In order for you to analyze the problem, I will attach the register values of my serializer and deserializer

    Ser:

    [REGISTERS]
    Device = ALP Nano 1 - DS90UB949, Connector 1
    Comments = ""
    Date = 07/12/2022
    Time = 10:30:31
    Reg = 0,0x0000,0x18
    Reg = 0,0x0001,0x00
    Reg = 0,0x0003,0xDA
    Reg = 0,0x0004,0x80
    Reg = 0,0x0005,0x00
    Reg = 0,0x0006,0x58
    Reg = 0,0x0007,0xA0
    Reg = 0,0x0008,0xB0
    Reg = 0,0x0009,0x00
    Reg = 0,0x000A,0xC7
    Reg = 0,0x000B,0x00
    Reg = 0,0x000C,0x17
    Reg = 0,0x000D,0x20
    Reg = 0,0x000E,0x00
    Reg = 0,0x000F,0x00
    Reg = 0,0x0010,0x00
    Reg = 0,0x0011,0x00
    Reg = 0,0x0012,0x00
    Reg = 0,0x0013,0x88
    Reg = 0,0x0014,0x00
    Reg = 0,0x0015,0x00
    Reg = 0,0x0016,0xFE
    Reg = 0,0x0017,0x1E
    Reg = 0,0x0018,0x7F
    Reg = 0,0x0019,0x7F
    Reg = 0,0x001A,0x01
    Reg = 0,0x001B,0x00
    Reg = 0,0x001C,0x00
    Reg = 0,0x001D,0x00
    Reg = 0,0x001E,0x05
    Reg = 0,0x001F,0xF7
    Reg = 0,0x0020,0x4B
    Reg = 0,0x0021,0x00
    Reg = 0,0x0022,0x25
    Reg = 0,0x0023,0x00
    Reg = 0,0x0024,0x00
    Reg = 0,0x0025,0x00
    Reg = 0,0x0026,0x00
    Reg = 0,0x0027,0x00
    Reg = 0,0x0028,0x01
    Reg = 0,0x0029,0x20
    Reg = 0,0x002A,0x20
    Reg = 0,0x002B,0xA0
    Reg = 0,0x002C,0x00
    Reg = 0,0x0030,0x00
    Reg = 0,0x0031,0x00
    Reg = 0,0x0032,0x00
    Reg = 0,0x0033,0x00
    Reg = 0,0x0034,0x00
    Reg = 0,0x0035,0x00
    Reg = 0,0x0036,0x00
    Reg = 0,0x0037,0x00
    Reg = 0,0x0038,0x00
    Reg = 0,0x0039,0x00
    Reg = 0,0x003A,0x00
    Reg = 0,0x003B,0x00
    Reg = 0,0x003C,0x00
    Reg = 0,0x003D,0x00
    Reg = 0,0x003E,0x00
    Reg = 0,0x003F,0x00
    Reg = 0,0x0040,0x14
    Reg = 0,0x0041,0x4E
    Reg = 0,0x0042,0x00
    Reg = 0,0x0043,0x00
    Reg = 0,0x0044,0x80
    Reg = 0,0x0045,0x00
    Reg = 0,0x0046,0x00
    Reg = 0,0x0047,0x00
    Reg = 0,0x0048,0x01
    Reg = 0,0x0049,0x68
    Reg = 0,0x004A,0x01
    Reg = 0,0x004B,0x38
    Reg = 0,0x004C,0x04
    Reg = 0,0x004D,0x00
    Reg = 0,0x004E,0x00
    Reg = 0,0x004F,0x00
    Reg = 0,0x0050,0x97
    Reg = 0,0x0051,0xA1
    Reg = 0,0x0052,0x1E
    Reg = 0,0x0053,0x00
    Reg = 0,0x0054,0x38
    Reg = 0,0x0055,0x0C
    Reg = 0,0x0056,0x00
    Reg = 0,0x0057,0x00
    Reg = 0,0x0058,0x00
    Reg = 0,0x0059,0x00
    Reg = 0,0x005A,0xCD
    Reg = 0,0x005B,0x20
    Reg = 0,0x005C,0x02
    Reg = 0,0x005D,0x06
    Reg = 0,0x005E,0x44
    Reg = 0,0x005F,0x8B
    Reg = 0,0x0060,0x22
    Reg = 0,0x0061,0x02
    Reg = 0,0x0062,0x00
    Reg = 0,0x0064,0x10
    Reg = 0,0x0065,0x00
    Reg = 0,0x0066,0x00
    Reg = 0,0x0067,0x00
    Reg = 0,0x0068,0x00
    Reg = 0,0x0069,0x00
    Reg = 0,0x006A,0x00
    Reg = 0,0x006B,0x00
    Reg = 0,0x006C,0x00
    Reg = 0,0x0070,0x00
    Reg = 0,0x0071,0x00
    Reg = 0,0x0072,0x00
    Reg = 0,0x0073,0x00
    Reg = 0,0x0074,0x00
    Reg = 0,0x0075,0x00
    Reg = 0,0x0076,0x00
    Reg = 0,0x0077,0x00
    Reg = 0,0x0078,0x00
    Reg = 0,0x0079,0x00
    Reg = 0,0x007A,0x00
    Reg = 0,0x007B,0x00
    Reg = 0,0x007C,0x00
    Reg = 0,0x007D,0x00
    Reg = 0,0x0080,0x00
    Reg = 0,0x0081,0x00
    Reg = 0,0x0082,0x00
    Reg = 0,0x0083,0x00
    Reg = 0,0x0084,0x00
    Reg = 0,0x0090,0x00
    Reg = 0,0x0091,0x00
    Reg = 0,0x0092,0x00
    Reg = 0,0x0093,0x00
    Reg = 0,0x0094,0x00
    Reg = 0,0x0098,0x00
    Reg = 0,0x0099,0x00
    Reg = 0,0x009A,0x00
    Reg = 0,0x009B,0x00
    Reg = 0,0x009C,0x00
    Reg = 0,0x009D,0x00
    Reg = 0,0x009E,0x00
    Reg = 0,0x009F,0x00
    Reg = 0,0x00A0,0x00
    Reg = 0,0x00A1,0x00
    Reg = 0,0x00A2,0x00
    Reg = 0,0x00A3,0x00
    Reg = 0,0x00C0,0x05
    Reg = 0,0x00C1,0x00
    Reg = 0,0x00C2,0x88
    Reg = 0,0x00C3,0x00
    Reg = 0,0x00C4,0x68
    Reg = 0,0x00C5,0x00
    Reg = 0,0x00C6,0x00
    Reg = 0,0x00C7,0x60
    Reg = 0,0x00C8,0xC0
    Reg = 0,0x00C9,0x00
    Reg = 0,0x00CA,0x00
    Reg = 0,0x00CB,0x00
    Reg = 0,0x00CC,0x00
    Reg = 0,0x00CE,0xFF
    Reg = 0,0x00D0,0x10
    Reg = 0,0x00D1,0x00
    Reg = 0,0x00D2,0x00
    Reg = 0,0x00D3,0x00
    Reg = 0,0x00E0,0x05
    Reg = 0,0x00E1,0x00
    Reg = 0,0x00E2,0x88
    Reg = 0,0x00E3,0x00
    Reg = 0,0x00E4,0x68
    Reg = 0,0x00E5,0x38
    Reg = 0,0x00E6,0x00
    Reg = 0,0x00E7,0x00
    Reg = 0,0x00F0,0x5F
    Reg = 0,0x00F1,0x55
    Reg = 0,0x00F2,0x42
    Reg = 0,0x00F3,0x39
    Reg = 0,0x00F4,0x34
    Reg = 0,0x00F5,0x39
    Reg = 0,0x00F6,0x00
    Reg = 0,0x00F8,0x00
    Reg = 0,0x00F9,0x00

  • 0 in reply to xinyu wu
    Prodigy 115 points

    Deser:

    [REGISTERS]
    Device = ALP Nano 1 - DS90UB948, Connector 1
    Comments = ""
    Date = 07/12/2022
    Time = 10:30:56
    Reg = 0,0x0000,0x58
    Reg = 0,0x0001,0x04
    Reg = 0,0x0002,0x00
    Reg = 0,0x0003,0x78
    Reg = 0,0x0004,0xFE
    Reg = 0,0x0005,0x9E
    Reg = 0,0x0006,0x00
    Reg = 0,0x0007,0x18
    Reg = 0,0x0008,0x00
    Reg = 0,0x0009,0x00
    Reg = 0,0x000A,0x00
    Reg = 0,0x000B,0x00
    Reg = 0,0x000C,0x00
    Reg = 0,0x000D,0x00
    Reg = 0,0x000E,0x00
    Reg = 0,0x000F,0x00
    Reg = 0,0x0010,0x00
    Reg = 0,0x0011,0x00
    Reg = 0,0x0012,0x00
    Reg = 0,0x0013,0x00
    Reg = 0,0x0014,0x00
    Reg = 0,0x0015,0x00
    Reg = 0,0x0016,0x00
    Reg = 0,0x0017,0x00
    Reg = 0,0x0018,0x00
    Reg = 0,0x0019,0x01
    Reg = 0,0x001A,0x11
    Reg = 0,0x001B,0xF5
    Reg = 0,0x001C,0x3B
    Reg = 0,0x001D,0x13
    Reg = 0,0x001E,0x33
    Reg = 0,0x001F,0x03
    Reg = 0,0x0020,0x11
    Reg = 0,0x0021,0x11
    Reg = 0,0x0022,0x40
    Reg = 0,0x0023,0x20
    Reg = 0,0x0024,0x08
    Reg = 0,0x0025,0x00
    Reg = 0,0x0026,0x14
    Reg = 0,0x0027,0x26
    Reg = 0,0x0028,0x11
    Reg = 0,0x0029,0x00
    Reg = 0,0x002A,0x00
    Reg = 0,0x002B,0x00
    Reg = 0,0x002C,0x00
    Reg = 0,0x002D,0x00
    Reg = 0,0x002E,0x00
    Reg = 0,0x002F,0x00
    Reg = 0,0x0030,0x00
    Reg = 0,0x0031,0x00
    Reg = 0,0x0032,0x90
    Reg = 0,0x0033,0x25
    Reg = 0,0x0034,0x02
    Reg = 0,0x0035,0x00
    Reg = 0,0x0036,0x00
    Reg = 0,0x0037,0x8C
    Reg = 0,0x0038,0x00
    Reg = 0,0x0039,0x00
    Reg = 0,0x003A,0x00
    Reg = 0,0x003B,0x02
    Reg = 0,0x003C,0x20
    Reg = 0,0x003D,0xE0
    Reg = 0,0x003E,0x23
    Reg = 0,0x003F,0x00
    Reg = 0,0x0040,0x43
    Reg = 0,0x0041,0x1F
    Reg = 0,0x0042,0x03
    Reg = 0,0x0043,0x01
    Reg = 0,0x0044,0x60
    Reg = 0,0x0045,0x88
    Reg = 0,0x0046,0x00
    Reg = 0,0x0047,0x00
    Reg = 0,0x0048,0x0F
    Reg = 0,0x0049,0x80
    Reg = 0,0x004A,0x00
    Reg = 0,0x004B,0x02
    Reg = 0,0x004C,0x00
    Reg = 0,0x004D,0x00
    Reg = 0,0x004E,0x63
    Reg = 0,0x004F,0x00
    Reg = 0,0x0050,0x03
    Reg = 0,0x0051,0x10
    Reg = 0,0x0052,0x00
    Reg = 0,0x0053,0x01
    Reg = 0,0x0054,0x80
    Reg = 0,0x0055,0x00
    Reg = 0,0x0056,0x08
    Reg = 0,0x0057,0x00
    Reg = 0,0x0058,0x00
    Reg = 0,0x0059,0x7F
    Reg = 0,0x005A,0x20
    Reg = 0,0x005B,0x20
    Reg = 0,0x005C,0x18
    Reg = 0,0x005D,0x00
    Reg = 0,0x005E,0x00
    Reg = 0,0x005F,0x00
    Reg = 0,0x0060,0x00
    Reg = 0,0x0061,0x00
    Reg = 0,0x0062,0x00
    Reg = 0,0x0063,0x00
    Reg = 0,0x0064,0x10
    Reg = 0,0x0065,0x00
    Reg = 0,0x0066,0x00
    Reg = 0,0x0067,0x00
    Reg = 0,0x0068,0x00
    Reg = 0,0x0069,0x00
    Reg = 0,0x006E,0x00
    Reg = 0,0x006F,0x00
    Reg = 0,0x0070,0x00
    Reg = 0,0x0071,0x00
    Reg = 0,0x0072,0x00
    Reg = 0,0x0073,0x07
    Reg = 0,0x0074,0x07
    Reg = 0,0x0075,0x08
    Reg = 0,0x0076,0x00
    Reg = 0,0x0077,0x00
    Reg = 0,0x0078,0x00
    Reg = 0,0x0079,0x00
    Reg = 0,0x007A,0x00
    Reg = 0,0x007B,0x6D
    Reg = 0,0x007C,0x02
    Reg = 0,0x0080,0x00
    Reg = 0,0x0081,0x00
    Reg = 0,0x0082,0x00
    Reg = 0,0x0083,0x00
    Reg = 0,0x0084,0x00
    Reg = 0,0x0090,0x00
    Reg = 0,0x0091,0x00
    Reg = 0,0x0092,0x00
    Reg = 0,0x0093,0x00
    Reg = 0,0x0094,0x00
    Reg = 0,0x0098,0x00
    Reg = 0,0x0099,0x00
    Reg = 0,0x009A,0x00
    Reg = 0,0x009B,0x00
    Reg = 0,0x009C,0x00
    Reg = 0,0x009D,0x00
    Reg = 0,0x009E,0x00
    Reg = 0,0x009F,0x00
    Reg = 0,0x00C0,0x00
    Reg = 0,0x00C1,0x00
    Reg = 0,0x00C3,0x00
    Reg = 0,0x00C4,0x00
    Reg = 0,0x00C5,0x00
    Reg = 0,0x00C8,0xC0
    Reg = 0,0x00C9,0x00
    Reg = 0,0x00CA,0x00
    Reg = 0,0x00CB,0x00
    Reg = 0,0x00CC,0x00
    Reg = 0,0x00E0,0x00
    Reg = 0,0x00E1,0x00
    Reg = 0,0x00E2,0x00
    Reg = 0,0x00E3,0x00
    Reg = 0,0x00E8,0x00
    Reg = 0,0x00E9,0x00
    Reg = 0,0x00EA,0x00
    Reg = 0,0x00F0,0x5F
    Reg = 0,0x00F1,0x55
    Reg = 0,0x00F2,0x42
    Reg = 0,0x00F3,0x39
    Reg = 0,0x00F4,0x34
    Reg = 0,0x00F5,0x38
    Reg = 0,0x00F6,0x00
    Reg = 0,0x00F8,0x00
    Reg = 0,0x00F9,0x00

  • 0 in reply to xinyu wu
    TI__Guru** 103215 points

    Xinyu,

    This is expected behavior - the PCLK is not actually different. You are just seeing margin of error for the PCLK reporting accuracy on the two sides. 949 and 948 use different detection methods to measure the PCLK value and neither is expected to be highly accurate. In practice the 949 is typically much more accurate than the 948. 

    Best Regards,

    Casey