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AD9889B video do not output on the HDMI interface

Question asked by zcliang on Apr 8, 2011
Latest reply on Apr 21, 2011 by zcliang

input source is a 720x576p picture.And ad9889 has detected the source format.

here is the read back i2c value:

 

                       0 : 0 0 0 0 0 0 0 0 0 0 1 e 3c 18 1 13
[   14.435517] 10 : 25 37 0 0 0 0 0 8 8 0 0 0 0 0 0 0
[   14.474718] 20 : 0 0 8 0 0 0 0 0 0 0 0 0 8 0 0 0
[   14.513889] 30 : 0 0 0 0 0 0 0 0 0 0 0 81 0 11 44 0
[   14.553328] 40 : 0 10 60 7e 78 80 4 80 0 0 0 0 0 0 0 0
[   14.593007] 50 : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[   14.632067] 60 : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[   14.671186] 70 : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[   14.710196] 80 : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[   14.749296] 90 : 0 0 0 0 e0 0 e0 0 3 2 0 18 38 61 10 0
[   14.788833] a0 : 0 0 84 84 8 4 0 0 0 0 0 40 0 0 40 6
[   14.828339] b0 : 14 be 81 f1 24 2 16 5d 10 0 40 ff 0 0 0 0
[   14.868231] c0 : 0 0 0 0 0 0 14 0 1

The value of reg 0x3d 0x3e  said that the vid is 576p.

but bit[0] of 0xc6 seem that TDMS is not enabled , also I can't

see output on the TV.

 

The following is my init code:

1) set av mute

    reg 0xa1  set bit 2 ~ 5

    reg 0x45  bit 7-6 set 01

 

2) power on

   reg 0x41   set 0x10

3) default val

   reg 0xa   clr  bit 4 5

   reg 0x98   set 0x03

   reg 0x9c   set 0x38

   reg 0x9d   bit1-0 set 01

   reg 0xa2   set 0x84

   reg 0xa3   set 0x84

   reg 0xbb   set 0xff

4) set clock delay

   reg 0xba  bit7 6 5 set 010

 

5)set video format tation

   reg 0x47 bit7-4   set 1000

6)video format

   reg 0x15  bit3-1  set 000    rgb444 format

   reg 0x16   set 0x00           output rgb444

   reg 0x17  clr bit 1              4:3 input

   reg 0x45   clr bit 4 5           output rgb

 

7)csc mode

  reg 0x18 ~ 0x30 rgb_rgb

  reg 0x17  bit 5 4   set 01

  reg 0x3b  bit 0      set 1

 

8)sellect hdmi mode

  reg 0xaf bit1 set 1

               bit4 clr  0  disable enc

 

9)clear av mute

   reg 0xa1 bit 5 4 3 2 clr 0

   reg 0x45 bit 7 6 set 10

 

What's wrong on it ?

 

zcliang

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