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DS90UB971-Q1: No any output from Dout of DS90UB971 after we enabled Pattern Generator

Lance Shen
Prodigy 150 points
Part Number: DS90UB971-Q1


Tool/software:

Hi Sir,

We used the following example code to enable Pattern Generator. But no any output from Dout of DS90UB971. Are there any incorrect or missing parts?

I2C between DS90UB971 and TDA4AL is ok, we can get the correct ID of  DS90UB971 over I2C.

7.6.4 Code Example for Pattern Generator

#Patgen Fixed Colorbar 1280x720p30

WriteI2C(0xB0,0x00) # Indirect Pattern Gen Registers

WriteI2C(0xB1,0x01) # PGEN_CTL

WriteI2C(0xB2,0x01)

WriteI2C(0xB1,0x02) # PGEN_CFG

WriteI2C(0xB2,0x33)

WriteI2C(0xB1,0x03) # PGEN_CSI_DI

WriteI2C(0xB2,0x24)

WriteI2C(0xB1,0x04) # PGEN_LINE_SIZE1

WriteI2C(0xB2,0x0F)

WriteI2C(0xB1,0x05) # PGEN_LINE_SIZE0

WriteI2C(0xB2,0x00)

WriteI2C(0xB1,0x06) # PGEN_BAR_SIZE1

WriteI2C(0xB2,0x01)

WriteI2C(0xB1,0x07) # PGEN_BAR_SIZE0

WriteI2C(0xB2,0xE0)

WriteI2C(0xB1,0x08) # PGEN_ACT_LPF1

WriteI2C(0xB2,0x02)

WriteI2C(0xB1,0x09) # PGEN_ACT_LPF0

WriteI2C(0xB2,0xD0)

WriteI2C(0xB1,0x0A) # PGEN_TOT_LPF1

WriteI2C(0xB2,0x04)

WriteI2C(0xB1,0x0B) # PGEN_TOT_LPF0

WriteI2C(0xB2,0x1A)

WriteI2C(0xB1,0x0C) # PGEN_LINE_PD1

WriteI2C(0xB2,0x0C)

WriteI2C(0xB1,0x0D) # PGEN_LINE_PD0

WriteI2C(0xB2,0x67)

WriteI2C(0xB1,0x0E) # PGEN_VBP

WriteI2C(0xB2,0x21)

WriteI2C(0xB1,0x0F) # PGEN_VFP

WriteI2C(0xB2,0x0A)

  • 0
    TI__Genius 16230 points

    HI Lance,

    Do you have a TI sales rep or TI field application engineer you can work with? These are NDA part, and we need to change this E2E to an internal forum.  

    If you can provide a block diagram of what you are trying to do would help. To see the pattern gen you need to have a DES connected to the 971. 

    Glenn 

  • 0 in reply to Glenn Uranga
    Prodigy 30 points

    Hi Glenn,

    Our FAE is Shih, Gibbs <gibbsshih@ti.com>

    We use a test box (Dothinkey FM101) to verify test pattern on PC.

    Thanks

  • 0 in reply to Johnson Ting
    TI__Genius 16230 points

    HI Johnson,

    Can you please work with Gibbs to get this to internal E2E? 

    Once internal we can provide a script for you to run. If you can provide the information below for the internal E2E. 

    PATGEN Output   
       
    Horizontal Resolution  
    Vertical  Resolution  
    Total Vertical Blanking   
    Vertical Front Porch  
    Vertical Back Porch  
    Vertical Sync   
    Frame Rate  
    FC Rate  
    Video format

    Gibbs, 

    Please help to make this an internal patget.

    Glenn 

  • 0 in reply to Glenn Uranga
    Prodigy 30 points

    ​Hi Glenn,

    Would you please let us know why we need FC rate?

    Horizontal Resolution 1920
    Vertical Resolution 1080
    Total Vertical Blanking 45
    Vertical Front Porch 10
    Vertical Back Porch 33
    Vertical Sync 2
    Frame Rate 60
    FC Rate 7.55 Gbps
    Video format RGB888

    Thanks

  • 0 in reply to Johnson Ting
    TI__Genius 16230 points

    HI Johnson, 

    I have provided this to Gibbs. He should reach out soon.