[AK8853XQ/ VN]
AK8853XQ/ VN
NTSC/PAL/SECAM Digital Video Decoder
Overview
The AK8853 is a single-chip digital decoder for NTSC, PAL, and SECAM composite video signals. Its
output data is in YCbCr format, compliant with ITU-R BT.601. Its pixel clock, with a generated clock
rate of 27 MHz, synchronizes with the input signal. Its output interface is ITU-R BT.656 compliant.
Closed-caption, VBID, and WSS encoded information in the input signal is externally accessible.
Microprocessor access is via a I
2
C interface.
Features
Decodes composite video signals NTSC (J, M, 4.43), PAL (B, D, G, H, I, M, N, Nc, 60), SECAM.
Four input channels, with internal video switch.
10-bit ADC 1 channel.
Internal line-locked and frame-locked PLLs for generation of clock synchronized with input signal.
Internal PGA (-6 dB to 6 dB).
Adaptive automatic gain control (AGC).
Auto color control (ACC).
Image adjustment (contrast, saturation, brightness, hue, sharpness).
Automatic input signal detection.
Adaptive 2-D Y/C separation.
PAL decoding phase correction.
ITU-R BT.656 format output (with 4:2:2_8 bit parallel_EAV/SAV)
Closed-caption signal decoding (output via register).
WSS signal decoding (output via register).
Macrovision signal detection (Macrovision certification).
Power down function.
I
2
C control.
1.70~2.00 V core power supply.
1.70~3.60 V interface power supply.
Operating temperature range:
−40°C
to 105°C. (AK8853XQ)
Operating temperature range:
−40°C
to 85°C. (AK8853VN)
48-pin LQFP package. (AK8853XQ)
48-pin QFN package. (AK8853VN)
(Note) The difference between AK8853XQ and AK8853VN is operating temperature range and package type.
Rev-E-00
1
2008/01
AKM [ ASAHI KASEI MICROSYSTEMS ]
