We use 941->948 chip with our project. Recentlly we find that display was black when works any hours. I have dumped the 941 and 948 register as below.
ub948:
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 58 04 00 f2 fe 1e 80 18 00 00 00 00 00 00 00 00 X?.?????........
10: 00 00 00 00 00 00 00 00 00 01 00 00 33 13 50 05 .........?..3?P?
20: 00 00 40 20 08 00 19 19 11 00 00 00 00 00 00 00 ..@ ?.???.......
30: 00 00 90 25 01 00 00 8c 00 00 00 1f 20 e0 23 00 ..?%?..?...? ?#.
40: 43 1f 03 00 60 88 00 00 0f 80 00 03 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 10 00 00 00 00 80 00 00 00 00 00 00 ....?....?......
70: 00 00 00 07 07 08 00 00 00 00 00 00 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..........
ub941:
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 18 00 00 da 00 00 58 00 00 01 01 00 17 30 30 00 ?..?..X..??.?00.
10: 00 00 00 8b 00 00 fe 9e 7f 7f 01 00 0c 00 01 00 ...?..?????.?.?.
20: 0b 00 25 00 00 00 00 00 01 20 20 a0 00 00 a5 5a ?.%.....? ?..?Z
30: c0 09 00 05 0c 00 00 00 00 00 00 00 00 00 81 02 ??.??.........??
40: 04 05 40 00 00 00 00 00 00 00 00 00 00 00 00 8c ??@............?
50: 16 00 00 00 02 00 00 02 00 00 c9 00 07 06 44 96 ?...?..?..?.??D?
60: 22 02 00 00 10 00 00 00 00 00 00 00 00 00 20 00 "?..?......... .
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 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 82 00 68 00 00 64 40 00 00 00 00 02 ff 00 ..?.h..d@....??.
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
e0: 00 00 82 00 68 08 00 00 00 00 00 00 00 02 00 00 ..?.h?.......?..
f0: 5f 55 42 39 34 31 00 00 00 00 00 00 00 00 00 00 _UB941..........
And I don't find any wrong with register. I found if I write 0x1 to 948's 0x1 register to reset digtal block. It was fixed and recover display ok.
Can you help to check register dump? Can you give me any suggest to analy the problem?
