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DS90UB949A-Q1: No images ouput when use 949+948 and turn on patter gen mode.

WeiFeng Lin
Prodigy 10 points
Part Number: DS90UB949A-Q1


Hi All,
Our products use DS90UB949 and DS90UB948 as shown in the picture below.


To test the hardware, I turned on pattern gen on the 949 and output images at a resolution of 640x480.
I have pulled GPIO_0, GPIO_1 and GPIO_3 high but still can't see any image showing on the LCD-TFT.
The registry dump is shown below.

948 regs

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 58 04 90 e8 fe 9e 00 34 00 00 00 00 00 00 00 00    X?????.4........
10: 00 00 00 00 00 00 00 00 00 01 00 00 03 19 89 09    .........?..????
20: 88 88 40 30 08 00 83 84 01 00 00 00 00 00 00 00    ??@0?.???.......
30: 00 00 90 25 01 00 00 aa 00 00 00 2f 20 e0 23 00    ..?%?..?.../ ?#.
40: 43 03 03 00 60 88 00 00 0f 02 00 08 00 00 63 00    C??.`?..??.?..c.
50: 03 10 00 01 80 00 00 00 00 7f 20 20 00 00 00 00    ??.??....?  ....
60: 00 00 00 00 11 00 1a 01 18 00 00 00 00 00 00 00    ....?.???.......
70: 00 00 00 07 07 08 00 00 00 00 00 02 02 00 00 00    ...???.....??...
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
a0: 00 00 8c 00 00 00 00 00 00 00 00 00 00 00 00 00    ..?.............
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 00 00 00 00 00 00 c0 00 00 00 00 00 00 00    ........?.......
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
f0: 5f 55 42 39 34 38 00 00 00 00 00 00 00 00 00 00    _UB948..........

949 regs

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 34 00 00 da 80 00 58 00 00 00 14 00 03 20 00 00    4..??.X...?.? ..
10: 00 00 00 88 00 01 fe 1e 7f 7f 01 00 00 00 01 00    ...?.??????...?.
20: 0b 00 25 00 00 00 00 00 01 20 20 a0 00 00 a5 5a    ?.%.....?  ?..?Z
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
40: 14 5c 00 00 80 00 00 00 00 00 00 00 00 00 00 00    ?\..?...........
50: 97 a1 1e 00 28 0c 00 00 00 00 d1 20 02 06 44 19    ???.(?....? ??D?
60: 22 02 00 00 11 07 0e 03 38 87 00 00 00 00 00 00    "?..????8?......
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 a8 00 68 38 00 00 c0 00 00 00 00 00 ff 00    ..?.h8..?.......
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 a8 00 68 38 00 00 00 00 00 00 00 00 00 00    ..?.h8..........
f0: 5f 55 42 39 34 39 00 00 00 00 00 00 00 00 00 00    _UB949..........

949 Pattern gen regs

Addr Val
0x0 0x00
0x1 0x00
0x2 0x00
0x3 0x08
0x4 0x20
0x5 0xd3
0x6 0x20
0x7 0x80
0x8 0x02
0x9 0x1e
0xA 0x60
0xB 0x02
0xC 0x30
0xD 0x21
0xE 0x03
0xF 0x1e
0x10 0x0e
0x11 0x21
0x12 0x43
0x13 0x65
0x14 0x87
0x15 0xa9
0x16 0xcb
0x17 0xed
0x18 0x0f
0x19 0xff
0x1A 0x01

Do I need to set any settings?

Any suggestions are appreciated!!