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ADV7604: Free-run not enabled even though video is not detected

Question asked by mra on Mar 14, 2012
Latest reply on Apr 23, 2012 by joe.triggs

Hi,

We have observed a few times that the receiver has not enabled free-run, even though video is not properly detected and locked. The output from ADV7604 is unstable and might cause problems for the downstream video processing.

 

The content of the register dumps are contradictory:

TMDS_CLK_A_RAW is 1, which indicates TMDS activity, but VIDEO_PLL_LCK_RAW, DE_REGEN_LCK_RAW, VIDEO_PLL_LOCKED and DCFIFO_LOCKED are 0. CH1_STDI_DVALID is 0 as well.

 

HDMI_CP_AUTOPARM_LOCKED is 0 and HDMI_AUTOPARM_STS is 0b10 (The CP is free running according to the HDMI buffered parameters), but CP_FREE_RUN is 0 (The CP is not free running).

 

IO map:

     00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00 : 1e 05 f2 40 62 2c a6 40 14 e0 90 44 42 1e 00 1e

10 : 00 03 c0 89 7f a0 00 00 34 00 00 00 00 00 00 00

20 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

30 : 88 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

40 : c2 c7 04 00 00 00 98 00 00 00 00 00 00 00 00 00

50 : 00 00 00 00 00 00 15 00 00 00 00 48 00 00 00 00

60 : 00 00 00 00 00 40 00 00 00 00 10 00 00 00 c0 10

70 : 00 00 00 10 00 00 00 00 00 00 00 00 00 00 02 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 0e 00 00 00 00 00 00 00 00 00 00 00 00 00 00

d0 : 02 00 1f 01 f0 1f 00 00 2d 42 1e 00 00 00 00 00

e0 : 00 00 00 00 01 00 00 00 04 00 00 00 00 00 00 00

f0 : 00 00 00 84 80 7c 50 66 4c 64 6c 68 60 44 48 00

 

AFE map:

     00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00 : ff fe 02 00 00 00 00 1f 00 00 00 00 0d 13 00 90

10 : 30 82 fb 00 00 0a 98 00 00 00 00 00 00 6d 6d 6d

20 : 6d 6d 6d 6d 6d 00 08 ff ff 00 00 00 00 00 00 00

30 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

40 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

50 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

60 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

70 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

80 : 80 20 80 02 02 0a 0a 0a f8 66 fc 13 f8 15 de 86

90 : c1 91 82 70 00 00 00 00 ff 0f ff 00 00 00 00 00

a0 : 00 02 02 ff ff ff f8 66 fc 13 f8 15 de 86 c1 91

b0 : 82 70 ff 0f ff 01 00 00 00 00 00 00 00 6f 00 fa

c0 : c0 18 80 08 30 02 7f 00 40 00 00 38 40 0a 96 00

d0 : 25 23 e1 ae ff cc 00 00 00 1b 04 00 00 00 00 00

e0 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

f0 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 

HDMI map:

     00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00 : 00 00 00 18 28 10 a5 00 00 0f ff 0f ff 84 8f 1f

10 : 25 3d 02 7f 3f fc ff 00 00 00 0a 18 04 00 00 01

20 : 00 00 00 04 03 fd 00 00 00 00 00 0b 00 0b 00 03

30 : 00 03 1f f3 1f f3 00 00 00 00 00 30 02 10 39 63

40 : 00 40 4a 0f 00 20 0f 00 80 00 00 0e 47 00 3b 63

50 : 00 04 73 00 00 00 58 b6 03 a3 00 12 1a 60 17 ff

60 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

70 : 00 00 00 00 00 00 00 00 00 00 03 ff 00 00 00 00

80 : 88 2e 0f 88 2e 0f 88 2e 0f 88 2e 0f a3 18 34 0f

90 : a0 30 0f 8b 2d 0f 01 00 ff a3 ff 0b 00 00 00 00

a0 : 00 00 00 00 16 16 16 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 00 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 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 

CP map:

     00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00 : 00 00 00 00 00 00 00 00 00 00 00 40 00 00 00 00

10 : 08 00 00 00 00 01 00 00 00 00 00 20 00 00 00 00

20 : 40 00 00 00 00 08 00 00 00 00 01 00 00 00 00 00

30 : 20 00 00 00 00 00 00 00 00 00 80 80 00 00 00 00

40 : 80 02 3b d4 03 23 00 00 00 3f ff 00 00 05 ce 83

50 : c0 00 40 00 00 00 00 08 00 00 00 00 01 00 00 00

60 : 00 00 20 00 00 00 00 00 f0 30 00 00 10 00 00 00

70 : 00 00 00 10 04 01 00 ff ff ff ff 05 c0 00 00 00

80 : 00 c0 04 00 0c 03 0b 00 00 00 20 40 00 00 00 01

90 : a8 10 00 00 00 00 00 f0 00 00 00 00 00 00 00 00

a0 : 00 00 00 00 00 00 00 00 00 00 00 46 50 00 60 00

b0 : 00 0d 38 00 00 f1 00 00 04 0e 03 00 00 18 00 16

c0 : 00 00 00 39 44 91 00 00 00 2d 00 30 1a ff 8f 01

d0 : 00 00 00 00 00 00 00 00 00 00 00 19 64 12 c5 78

e0 : 23 ff 00 18 00 00 be 16 a7 d2 36 0e 3c 15 fd f0

f0 : fe 40 04 dc 00 00 00 15 03 23 42 15 03 59 0b 00


Do you know what is wrong and how we can solve this?

 

Regards,

     Mats Randgaard

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