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ADV7280 NTSC,I2P issue

Question asked by Daniel.Wang on Aug 19, 2014
Latest reply on Aug 26, 2014 by Rob.Analog


Dear all,

 

One customer is developing a video processing application, using BF609(DSP)+ADV7280 for prototype. They met an issue when employing I2P function of 7280 with NTSC mode. The attached original.png is input image to 7280, captured.jpg is the captured data by BF609.  By contrasting the two snapshot you can see a few lines of blanking data is added to the top of original image. I did several test as follows,

1.   1. Interface ADV7280 with a PAL camera, I2P function enabled, configure BF609 to PAL mode, BF609 is able to receive PAL progressive data, no blanking data is received, read back register 0x10 of 7280, the value is 100, means it recognize the video stream as PAL format

2.    2. Interface ADV7280 with a NTSC camera, I2P function enabled, configure BF609  to NTSC mode, the issue occurred as I described in the very first, no blanking data is received, read back register 0x10 th value is 0, meat it recognize the video stream as NTSC format

3.    3. Configure ADV7280 to output a 480p@60 colorbar, configure BF609 to NTSC mode with the same configuration as step 2, BF609 is able to receive the correct data, no blanking data is received, I assume this proves the BF609 configuration is correct

 

H  Have you met this kind of issue before? Do you have any comments or suggestion? Thanks in advance.

     I also attach the 7280 configuration data here

 

//42 0F 00 ; Exit Power Down Mode

//42 0E 80 ; ADI recommended write

//42 9C 00 ; ADI recommended write

//42 9C FF ; ADI recommended write

//42 0E 00 ; ADI recommended write

//42 00 00 ; CVBS in on AIN1

//42 03 0C ; Enable Pixel & Sync output drivers

//42 04 17 ; Power-up INTRQ pad & Enable SFL

//42 13 00 ; Enable INTRQ output driver

//42 17 41 ; Enable SH1

//42 6B 13 ; Enable DE Signal

//42 1D 40 ; Enable LLC output driver

//42 52 CB ; ADI Recommended Writes - Recommended IBias Settings

//42 80 51 ; ADI Recommended Write

//42 81 51 ; ADI Recommended Write

//42 82 68 ; ADI Recommended Write

//42 FD A4 ; Set VPP Map

//A4 A3 00 ; ADI Recommended Write

//A4 5B 00 ; Enable advanced timing

                     //A4 55 80 ; Enable the Deinterlacer for I2P

Best regards,

Daniel

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