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ADV7611 Free-run mode

Question asked by bokyung on Dec 1, 2011
Latest reply on Feb 7, 2018 by GuenterL

ADV7611 automatic mode setting value

 

Look at the documentation for ADV7611 register settings frcommendations.

 

1.3.2 Free-run Operation
For best free-run performance, the following steps should be employed
   Set PRIM_MODE to the desired free-run standard (IO Map, 0x01[3:0])
   Set VID_STD to the desired free-run standard (IO Map, 0x00[5:0])
   Set VFREQ to the frequency of the desired free-run standard (IO Map, 0x01[6:4])
   Enable the CP mode to slave free-run parameters from PRIM_MODE and VID_STD (CP Map, 0x0C9[0])
   Enable free-run mode (CP Map, 0xBF[0])

 

So I had to set the value.

 

98 F4 80 CEC Map I2C address
98 F5 7C INFOFRAME Map I2C address
98 F8 4C DPLL Map I2C address
98 F9 64 KSV Map I2C address
98 FA 6C EDID Map I2C address
98 FB 68 HDMI Map I2C address
98 FD 44 CP Map I2C address

 

98 01 05 Prim Mode HDMI-GR

98 00 18 HD2*1 720p

 

44 C9 01 slave free-run

44 BF 01 free-run mode

HDMI Map
68 6F 0C ; ADI recommended setting
68 85 1F ; ADI recommended setting
68 87 70 ; ADI recommended setting
68 57 DA ; ADI recommended setting
68 58 01 ; ADI recommended setting


Following writes are recommended for non-fast switching applications:
68 C1 01 ; ADI recommended setting
68 C2 01 ; ADI recommended setting
68 C3 01 ; ADI recommended setting
68 C4 01 ; ADI recommended setting
68 C5 01 ; ADI recommended setting
68 C6 01 ; ADI recommended setting
68 C7 01 ; ADI recommended setting
68 C8 01 ; ADI recommended setting
68 C9 01 ; ADI recommended setting
68 CA 01 ; ADI recommended setting
68 CB 01 ; ADI recommended setting
68 CC 01 ; ADI recommended setting

 

why don't Free mode??

 

pclk, Hsync, Vsync Signal does not come..

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