General Description

The AK8856 decodes NTSC or PAL composite video signals into digital video data. The outputs are ITU-R BT. 601 level compatible Y, Cb and Cr signals. The decoded result is scaled to 601, VGA (interlaced output), CIF, QVGA, QCIF, rotated QVGA , or rotated CIF(progressive). Information including closed caption, VBID, and WSS are encoded in the video signal can be read out externally. The AK8856 is controlled by through an I²C interface.

Features

• NTSC-M, NTSC-4.43 / PAL- B, D, G, H, I, N, Nc, M, 60 composite signal decoding process
• 10 Bit ADC (sampling at 24.5454MHz or 27MHz)
• Integrated PGA (0dB ~ 12dB)
• Automatic color control (ACC) function
• Adaptive automatic gain control (AGC) function
• 1D or 2D YC separation
• Phase compensation for PAL
• Output interface
  - ITU-R BT.656 output format (4:2:2 8-bit parallel output with EAV / SAV)
  - Camera interface
  - Interface with HD / VD / DVALID signals
• Closed caption decoding function (read by register setting)
• VBID (CGMS-A) decoding function (CRCC decode) (read by register setting)
• WSS decoding function (read by register setting)
• Macrovision signal detect function
• Power-down function
• 2-channel analog input selector
• I²C control compatible
• 1.8V core voltage
• Package: 41 FBGA 4.0mm x 4.0mm (AK8856VG), 48 QFN 7.2mm x 7.2mm