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DS90UH949-Q1: How to disable HDCP ?

PYTsai
Genius 10755 points
Part Number: DS90UH949-Q1

Hi 

Now i am doing testing using DS90UH949-Q1 + DS90UB940 EVM. 

May i ask how to disable DS90UH949-Q1 HDCP so it can work with DS90UB940 ?  thanks!

  • 0
    TI__Guru** 103215 points

    Hello PYTsai,

    HDCP is not active by default on 949 but if for some reason you have activated it and need to disable it, then set bits 0xC3[3] and 0xC3[1] = 1 on the 949

    Best Regards,

    Casey 

  • 0 in reply to Casey McCrea
    TI__Genius 10755 points

    Hi Casey,

    The attachment is our DS90UH949-Q1 register dump. How to read it to check if the HDCP of DS90UH949-Q1  is on or off ?

    ds90uh949H register value.txt
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    [REGISTERS]
    Device = ALP Nano 1 - DS90UH949, Connector 1
    Comments = "DS90UH949 Register dump"
    Date = 01/16/2020
    Time = 13:32:28
    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,0x00
    Reg = 0,0x000B,0x00
    Reg = 0,0x000C,0x01
    Reg = 0,0x000D,0x10
    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 = 0,0x0015,0x01
    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,0xF5
    Reg = 0,0x0020,0x0B
    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,0x80
    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
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  • 0 in reply to PYTsai
    TI__Guru** 103215 points

    Hello PYTsai,

    According to the register dump, 0xC4[0] = 0 which means HDCP is not authenticated. Also 0xC3 = 0x00 which shows encryption is not enabled. 

    Best Regards,

    Casey