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ADV7341 Composite Output issue

Question asked by preetin on Sep 12, 2014
Latest reply on Sep 23, 2014 by PaulS



We are using ADV7341 Chip for Composite output ( PAL Output) .We are observing video output with 30 pixel clipped at left and right side. The configuration is as below.


  i2c_write(base, reg>>1, 0x00, 0xFC ); //All DACs enabled. PLL enabled

  i2c_write(base, reg>>1, 0x01, 0x00 ); // SD input mode

  i2c_write(base, reg>>1, 0x80, 0x05 ); // PAL & NTSC standard. SSAF luma filter enabled. 1.3 MHz chroma filter enabled

  i2c_write(base, reg>>1, 0x82, 0xc4 ); //Pixel data valid

  i2c_write(base, reg>>1, 0x87, 0x20 ); //PAL/NTSC autodetect mode enabled

  i2c_write(base, reg>>1, 0x88, 0x00 ); // 8-bit input enabled


Please check and let me know if any problem is there in configuration.


Thanks & Regards