AnsweredAssumed Answered

ADV7619 video clamping

Question asked by ak1000 on Aug 14, 2014
Latest reply on Aug 20, 2014 by GuenterL

Hello,

 

 

 

Trying to initialize the ADV7619 for 1920x1080 (see below) but the video is being clamped 16-235

What is clamping in the ADV7619? Also when I use the script for UHD (3840x2160@30Hz) I do not see the clamping for this resolution.

 

 

98 FF 80 ; I2C reset

98 F4 80 ; CEC

98 F5 7C ; INFOFRAME

98 F8 4C ; DPLL

98 F9 64 ; KSV

98 FA 6C ; EDID

98 FB 68 ; HDMI

98 FD 44 ; CP

68 C0 03 ; ADI Recommended Write

98 01 06 ; Prim_Mode =110b HDMI-GR

98 02 12 ; force RGB 0-255, RGB out, op_656 bit = 0

98 03 40 ; 24 bit SDR 444 Mode 0

98 05 28 ; AV Codes Off # 

98 06 A0 ; No inversion on VS,HS pins

98 0C 42 ; Power up part

98 15 80 ; Disable Tristate of Pins

98 19 83 ; LLC DLL phase

98 33 40 ; LLC DLL MUX enable

44 BA 01 ; Set HDMI FreeRun

44 6C 00 ; Required ADI write –this fix it in the ADV7611

64 40 81 ; Disable HDCP 1.1 features

4C B5 01 ; Setting MCLK to 256Fs

68 C0 03 ; ADI Required write

68 00 08 ; Set HDMI Input Port A (BG_MEAS_PORT_SEL = 001b)

68 02 03 ; ALL BG Ports enabled

68 03 98 ; ADI Required Write

68 10 A5 ; ADI Required Write

68 45 04 ; ADI Required Write

68 97 C0 ; ADI Required Write

68 3D 10 ; ADI Required Write

68 3E 69 ; ADI reccommended writes

68 3F 46 ; ADI reccommended writes

68 4E FE ; ADI reccommended writes

68 4F 08 ; ADI reccommended writes

68 50 00 ; ADI Recommended Write

68 57 A3 ; ADI reccommended writes

68 58 07 ; ADI reccommended writes

68 83 FC ; Enable clock terminators for port A & B

68 84 03 ; ADI reccommended writes

68 85 10 ; ADI recommended setting

68 86 9B ; ADI recommended setting

68 89 03 ; ADI recommended setting

68 9B 03 ; ADI recommended setting

68 93 03 ; ADI recommended setting

68 5A 80 ; ADI recommended setting

 

Thanks

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