HDMI-GR input video selected as VGA but by providing HDMI input, device able to convert RGB888 format.

Hi,

   YES VGA is analog interface but we can support any formats over analog or digital interface So we can send graphics format using digital interface(HDMI) and that is the reason we can able to convert RGB888 format.

  Also, By using prime mode register we can able to control Analog-GR and HDMI-GR Mode.

Thanks,

Poornima

Hi Poornima,

I am providing HDMI input video with 1024x768 resolution, I want to generate 36bit RGB output, please suggest configuration script file number.

Thanks & Regards,
Mallikarjuna.

Hi,

  Please refer 1024x768 related configuration (5-3x) at 7725.ADV7842_Evaluation_Board_Documents.zip

Hi,

I am providing HDMI input video but in below script HDMi registers are not configured.

##Scripts 5 CP Graphics XGA-##
:5-3a 1024x768@60 XGA RGB in_ 444 24bit H_V_DE DAC:
50 10 01 ; Data to DAC only
50 19 10 ; ADV7842 Mode
50 1B 02 ; ADV7511
40 FF 80 ; I2C reset
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 0C ; VID_STD=01100b for XGA60
40 01 82 ; Prim_Mode to graphics input
40 02 F6 ; Auto input color space, Limited Range RGB Output
40 03 42 ; 24 bit SDR 444
40 05 28 ; Disable AV Codes
40 0C 40 ; Power up Part
40 15 B0 ; Disable Tristate of Pins except for Audio pins
44 73 EA ; Set manual gain of 0x2A8
44 74 8A ; Set manual gain of 0x2A8
44 75 A2 ; Set manual gain of 0x2A8
44 76 A8 ; Set manual gain of 0x2A8
44 85 0B ; Disable Autodetectmode for Sync_Source for CH1. Force CH1 to use HS&VS
44 C3 39 ; ADI recommended write
4C 0C 1F ; ADI recommended write
4C 12 63 ; ADI recommended write
4C 00 80 ; ADC power Up
4C 02 00 ; Ain_Sel to 000. (Ain 1,2,3)
4C C8 25 ; DLL_PHASE - 100101b
End

Thanks & Regards,
Mallikarjuna

Hi,

  Please use below configuration and configure "40 00 0C" VID_STD=01100b for XGA60.

Hi,

44 BA 01 ; Set HDMI FreeRun, FreeRun means it will not consider external HDMI input, for considering external HDMI input this register need to configure with 0, is my understanding is correct or not.

Thanks & Regads,
Mallikarjuna.

Hi,

The 7842 will always output what it see at the input, if there is no input then it will free run per the VID_STD if free run enabled.

 HDMI free run mode 0: free run is triggered when the TMDS clock is not detected, for example, in a cable disconnect situation.
  HDMI free run mode 1: free run is triggered when the TMDS clock is not detected or when the detected input format does not match the format dictated by the PRIM_MODE and VID_STD settings.

Thanks,

Varshini K