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Original question:

DS90UB954-Q1: Forwarding of RX Port

DS90UB954-Q1: Display problem

user6259789
Prodigy 230 points
Part Number: DS90UB954-Q1

Hi Team，

Now we use 954 to decode the image and find that the image display will be unstable for each frame of the image.Video is our problem phenomenon.

We have tried many methods and it has not been solved, now we paste the 954 register we configured, please help to analyze.

Best regards,

Alec Li

Fullscreen Reg_Map.txt Download 
/*0x00*/0x7a	0x0	0x1e	0x20	0xdf	0x1	0x0	0xfe	0x1c	0x10	0x7a	0x7a	0x81	0xb9	0x8	0x7f	
/*0x01*/0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x4	0x3	
/*0x02*/0x20	0xc	0x1	0x93	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	
/*0x03*/0x0	0x0	0x0	0x23	0x40	0x3	0x0	0x0	0x0	0x0	0x0	0x1	0x14	0x6f	0x0	0x40	
/*0x04*/0x0	0xa7	0x71	0x1	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x12	0x1	0x3	0x4	0x31	
/*0x05*/0xd	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x5e	0x0	0x0	0xb4	0xb4	0x20	0x0	0x0	
/*0x06*/0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x7f	0x88	0x88	
/*0x07*/0x1e	0x1e	0xe4	0x2	0xd0	0xf	0x0	0xc5	0x0	0x1	0x0	0x0	0xc1	0x0	0x0	0x0	
/*0x08*/0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	
/*0x09*/0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	
/*0x0A*/0x2	0xf	0x0	0x0	0x8	0x18	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	
/*0x0B*/0x2	0x55	0x0	0x8	0x25	0x0	0x18	0x0	0xff	0x33	0x83	0x74	0x80	0x0	0x0	0x0	
/*0x0C*/0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	
/*0x0D*/0x0	0x43	0x94	0x2	0x60	0xf2	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	
/*0x0E*/0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	
/*0x0F*/0x5f	0x55	0x42	0x39	0x35	0x34	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0	0x0

  • 0
    TI__Guru** 103215 points

    Hello Alec,

    Can you please check on the 954 LOCK pin during operation? Does the system have stable lock or are there any temporary drops in the LOCK status during operation? Also which serializer is being used with 954?

    Best Regards,

    Casey 

  • 0 in reply to Casey McCrea
    Prodigy 230 points

    Hi Casey,

    Thanks for your reply.During operation, the 954 Lock and Pass pins are continuously high.And the serializer is 933.

    Is there any problem with our configured 954 from the register？What are the possible causes of the problem in the video？

    Input video format:YUV422-8bit,1920*720,output format:2Data lane,400M,continuous clock.

    Please help us analyze what the possible cause of the problem is.

    Best regards,

    Alec Li

  • 0 in reply to user6259789
    TI__Mastermind 30515 points

    dependent on the MIPI i/f, the 400M/lane *2 could not support 1920x720@30Hz video. please use 4lanes x400M/lane MIPI i/f for this.

    or else you can reduce the frame rate from 30Hz to 25Hz.

    Steven