AnsweredAssumed Answered

ADV7280M does not display Color Bar

Question asked by TomY on May 19, 2014
Latest reply on Oct 10, 2016 by Rob.Analog

Hi,

 

Currently, I'm evaluating ADV7280M on my custom board (not ADI's evaluation board).
I tried to display Color Bar, but it does not display correctly. (It is broken color bar.)

 

I use ADI's script which was downloaded from EZ as follows, and I monitored the output from ADV7280M by MIPI protocol analyzer.

http://ez.analog.com/docs/DOC-10612
ADV7280M_Cust-VER.4.1.txt

:Color Bars 480p MIPI Out:
delay 10 ;
42 0F 00 ; Exit power down mode
42 0E 00 ; Enter User Sub Map
42 0C 37 ; Force Free-run mode
42 02 50 ; Force standard to NTSC-M
42 14 11 ; Set Free-run pattern to color bars
42 03 4E ; ADI Required Write
42 04 57 ; Enable Intrq pin
42 13 00 ; Enable INTRQ output driver
42 17 41 ; select SH1
42 1D C0 ; Tri-State LLC output driver
42 52 CD ; ADI Required Write
42 80 51 ; ADI Required Write
42 81 51 ; ADI Required Write
42 82 68 ; ADI Required Write
42 FD 84 ; Set VPP Map Address
84 A3 00 ; ADI Required Write
84 5B 00 ; Advanced Timing Enabled
84 55 80 ; Enable I2P
42 FE 88 ; Set CSI Map Address
88 01 20 ; ADI Required Write
88 02 28 ; ADI Required Write
88 03 38 ; ADI Required Write
88 04 30 ; ADI Required Write
88 05 30 ; ADI Required Write
88 06 80 ; ADI Required Write
88 07 70 ; ADI Required Write
88 08 50 ; ADI Required Write
88 DE 02 ; Power up D-PHY
88 D2 F7 ; ADI Required Write
88 D8 65 ; ADI Required Write
88 E0 09 ; ADI Required Write
88 2C 00 ; ADI Required Write
88 1D 80 ; ADI Required Write
88 00 00 ; Power up MIPI CSI-2 Tx 
End

 

Did you confirm the color bar using above script?

 

As a trial, I added the "88 D4 FF ; Trial Write" as follows, then the color bar could display correctly.

88 D2 F7 ; ADI Required Write
88 D4 FF ; Trial Write  <--Added!!!
88 D8 65 ; ADI Required Write

 

Therefore, I guess other setting is necessary more.
Could you please confirm whether this script setting is correct or not?

 

Best regards, TomY

Outcomes