ds90ub949 接入1080p ,HDMI,无法显示

ds90ub949 量HPD已经有拉高到5V，直接Pattern Generator测试ds90ub949 和ds90ub948也都正常，HDMI接PC是正常的，但接入HDMI 到949，就是无法显示，

查看寄存器：0xc  为0x13   ,0x5F，一直为0x00,  TDMS clock检测不到，但量了HDMI ,clock  ,是有，但不是连续是，类似有自动reset，请问什么原因会引起这种问题

user6351318：

ds90ub949寄存器：
i2cdump -f -y 0 0x0c0123456789abcdef0123456789abcdef
00: 18 00 00 da 80 00 58 2c 2c 00 ea 04 03 23 30 03?..??.X,,.???#0?
10: 00 00 00 88 00 01 fe 1e 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: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00…………….
40: 14 55 00 00 80 00 00 00 00 00 00 00 00 00 00 00?U..?………..
50: 97 a1 1e 00 28 0c 3f 00 00 00 92 20 02 06 44 00???.(??…? ??D.
60: 22 02 00 00 10 00 00 00 00 00 00 00 00 00 00 00"?..?………..
70: 48 00 00 00 00 00 00 48 00 00 00 00 00 00 00 00H……H……..
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 00 00 40 c0 00 00 00 00 00 ff 00..?.h..@?…..?.
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……….

ds90ub948寄存器：
i2cdump -f -y 0 0x2c0123456789abcdef0123456789abcdef
00: 58 04 00 f0 fe 1e 00 18 00 00 00 00 00 00 00 00X?.???.?……..
10: 00 00 00 00 00 00 00 00 00 01 00 00 22 15 50 05………?.."?P?
20: 00 00 40 20 08 00 83 84 21 00 00 00 00 00 00 00..@ ?.??!…….
30: 00 00 90 25 01 00 00 88 00 00 00 05 20 e0 23 00..?%?..?…? ?#.
40: 43 03 03 00 60 88 00 00 0f 00 00 08 00 00 63 00C??.`?..?..?..c.
50: 03 10 00 01 80 00 00 00 00 3f 20 20 00 00 00 00??.??….?….
60: 00 00 00 00 10 00 00 00 00 00 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 7d 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……….