AK8856VN Datasheet, PDF (1/98 Pages) Asahi Kasei Microsystems – NTSC/PAL Video Decoder

ASAHI KASEI
[AK8856VN ]
AK8856VN
NTSC/PAL Video Decoder
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
• Core voltage (AVDD, DVDD) 1.65 - 1.8V
• I/O voltage (PVDD) 1.65 - 3.3V
• Package: 48 QFN or 41 BGA (see VG datasheet)
* The output that meets the ITU-R BT.656 standard according to the fineness of the input signal might not be available.
MS0522-E-00
1
2006/Dec