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ADV7842 have problems in HDMI 1080p60 mode

Question asked by MartinGo on Dec 16, 2015
Latest reply on Dec 17, 2015 by Poornima

Hi,

     I'm using ADV7842 as a HDMI receiver.Everything is ok when video resolution is 720p60:

IMG-20151216-00637.jpg

     But when video resolution changes into 1080p60,we get this:

IMG-20151216-00639.jpg

IMG-20151216-00640.jpg

     Here is my configuration of ADV7842:

40 F1 90 ; SDP map

40 F2 94 ; SDPIO map

40 F3 84 ; AVLINK

40 F4 80 ; CEC

40 F5 7C ; INFOFRAME

40 F8 4C ; AFE

40 F9 64 ; KSV

40 FA 6C ; EDID

40 FB 68 ; HDMI

40 FD 44 ; CP

40 FE 48 ; VDP

40 00 02 ; Vid_Std =10b

40 01 06 ; Prim_Mode =110b HDMI-GR

40 02 F6 ; Auto input color space, Limited Range RGB Output

40 03 40 ; 24 bit SDR 444 Mode 0

40 05 28 ; AV Codes Off

40 06 A0 ; VS,HS Polarity

68 C1 FF ; HDMI power control (power saving)

68 C2 FF ; HDMI power control (power saving)

68 C3 FF ; HDMI power control (power saving)

68 C4 FF ; HDMI power control (power saving)

68 C5 00 ; HDMI power control (power saving)

68 C6 00 ; HDMI power control (power saving)

68 C0 FF ; HDMI power control (power saving)

40 0C 40 ; Power up part and power down VDP

40 15 80 ; Disable Tristate of Pins

40 19 83 ; LLC DLL phase

40 33 40 ; LLC DLL enable

44 BA 01 ; Set HDMI FreeRun

44 3E 00 ; Disable CP Pregain Block

44 6C 00 ; Use fixed clamp values

4C 00 FF ; Power Down ADC's and there associated clocks

4C 01 FE ; Power down ref buffer_bandgap_clamps_sync strippers_input mux_output buffer

4C B5 01 ; Setting MCLK to 256Fs

68 00 32 ; Set HDMI Input Port A (Enable BG monitoring)

68 01 18 ; Enable clock terminators

68 0D 34 ; ADI recommended write

68 1A 8A ; Unmute audio

68 3D 10 ; HDMI ADI recommended write

68 44 85 ; TMDS PLL Optimization

68 46 1F ; ADI Recommended Write ES3/Final silicon

68 60 88 ; TMDS PLL Optimization

68 61 88 ; TMDS PLL Optimization

68 6C 18 ; Disable ISRC clearing bit, Improve robustness

68 57 B6 ; TMDS PLL Optimization

68 58 03 ; TMDS PLL Setting

68 67 20 ; TMDS PLL Setting

68 75 10 ; DDC drive strength

68 85 1F ; ADI Equaliser Setting

68 87 70 ; HDMI Recommended write

68 89 04 ; ADI Equaliser Setting

68 8A 1E ; ADI Equaliser Setting

68 93 04 ; ADI Equaliser Setting

68 94 1E ; ADI Equaliser Setting

68 9D 02 ; ADI Equaliser Setting

68 99 A1 ; HDMI ADI recommended write

68 9B 09 ; HDMI ADI recommended write

68 C9 01 ; HDMI free Run based on PRIM_MODE, VID _STD

 

     By the way:

     I'm NOT using the ADV7842 evaluation board.

     My monitor'resolution is 1080p.

     My video source is a set top box.

     Samething happens when i use ADV7842 as a DVI receiver.

 

 

Martin

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