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ADV7184 no chroma output

Question asked by JtElektronik on May 20, 2016
Latest reply on Jun 22, 2016 by JtElektronik

Hi!

We are developing a video-card capable of digitizing analog PAL -CVBS  signal and output this to an Monitor connected  via HDMI.

Therefor we use your ADV7184 and ADV7513. Both are connected  with the 16bit BT656 (4:2:2) dataport.
Our problem is that we get a Y-signal ( it looks like one ) on P8-P15 of the ADV7184 but no croma signal ( only h-sync) an the P0 -P7.

 

PAL-Video input is within the desired range, Status flag FSC-Lock is 0.

Of coarse there is no output on the HDMI-output of the ADV7513.

I tried different configurations  without success ( also changed the part ).


Also tried this example configuration:

625I SCART RGB IN  2X1 16 Bit 422 Out through (Encoder in 625i Mode):
42 00 0F ; CVBS Ain11
42 04 57 ; Enable SFL
42 1D 47 ; Enable 28MHz Crystal
42 31 02 ; Clears NEWAV_MODE, SAV/EAV  to suit ADV video encoders
42 3A 10 ; Set Latch Clock & Power UP ADC 1 & ADC2 & ADC3& ADC4
42 3B 71 ; IBIAS ADJUST
42 3D A2 ; MWE Enable Manual Window, Colour Kill Threshold to 2
42 3E 6A ; BLM optimisation
42 3F A0 ; BGB
42 4D EE ; Disable CTI
42 67 01 ; Format 422
42 73 D0 ; Manual Gain Channels A,B,C
42 74 04 ; Manual Gain Channels A,B,C
42 75 01 ; Manual Gain Channels A,B,C
42 76 00 ; Manual Gain Channels A,B,C
42 77 04 ; Manual Offsets A to 64d & B,C to 512
42 78 08 ; Manual Offsets A to 64d & B,C to 512
42 79 02 ; Manual Offsets A to 64d & B,C to 512
42 7A 00 ; Manual Offsets A to 64d & B,C to 512
42 93 78 ; Clamp optimisation
42 94 23 ; Clamp optimisation
42 95 11 ; Clamp optimisation
42 96 C0 ; Clamp optimisation
42 C5 00 ; Clamp Mode 0 for FB hc based
42 ED C4 ; Enable Static Switching Mode and Select RGB Input
42 F3 0F ; Enable Anti Alias Filter on all ADCs
42 F9 03 ; Set max v lock range
42 0E 80 ; ADI Recommended Write
42 52 46 ; ADI Recommended Write
42 54 00 ; ADI Recommended Write
42 7F FF ; ADI Recommended Write
42 81 30 ; ADI Recommended Write
42 90 C9 ; ADI Recommended Write
42 91 40 ; ADI Recommended Write
42 92 3C ; ADI Recommended Write
42 93 CA ; ADI Recommended Write
42 94 D5 ; ADI Recommended Write
42 B1 FF ; ADI Recommended Write
42 B6 08 ; ADI Recommended Write
42 C0 9A ; ADI Recommended Write
42 CF 50 ; ADI Recommended Write
42 D0 4E ; ADI Recommended Write
42 D1 B9 ; ADI Recommended Write
42 D6 DD ; ADI Recommended Write
42 D7 E2 ; ADI Recommended Write
42 E5 51 ; ADI Recommended Write
42 0E 00 ; ADI Recommended Write

 

On the datasheet I couldn't find a register 0x67 as used above??

We corrected the I2C address to 0x40 and also the input 0x00 = 0x00 for  CVBS input at AIN1.
Any kind of help would be very appreciated.

 

Regards

Klaus

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