OKI Semiconductor
ML86V7668A
FEDL86V7668A-01
Issue Date: Jan. 29, 2007
NTSC/PAL/SECAM Digital Video Decoder
GENERAL DESCRIPTION
The ML86V7668A is an LSI that converts NTSC, PAL and SECAM analog video signals into the YCbCr standard
digital format defined by ITU-R recommendations BT.601/BT.656 and RGB digital data.
The device has two built-in 10-bit A/D converter channels and can accept composite video or S-video signal as
input.
The composite video signal is separated into a luminance signal and chrominance signals by a 2-dimensional Y/C
separation filter (adaptive comb filter) and are then converted to a general-purpose video data format.
In addition to the asynchronous sampling that is a special feature of Oki decoders, video signals can also be
sampled using digital PLL for line lock clock sampling.
Further, with the built-in pixel position correction circuit and the FIFO for correcting the pixel count, the video
jitter that can be a problem with asynchronous sampling is eliminated and jitter-free output data is ensured.
The ML86V7668A is a synchronous-performance-improved version of the ML86V7668. It is a product in which
the synchronous performance in a weak electromagnetic field has specially been enhanced.
The ML86V7668A is fully pin-compatible with the ML86V7668.
USES AND APPLICATIONS
The ML86V7668A is an IC that can be used as an interface for video signal input of any digital video processing
system. The device can be operated with a digital PLL line lock clock for applications where image quality is of
utmost importance. Further, for applications where sync speed is important, such as switching between multiple
input channels, an asynchronous clock allows high-speed synchronous operation.
Applications
· TVs and TV reception equipment
Panel TVs such as TFT/PDP, PC TVs, digital TVs, set top boxes for receiving TV broadcasts
· Video recording equipment
DVD-R/W, HDD recorders, digital VTRs, digital video cameras, and digital cameras
· Monitoring systems
Multi-display equipment, long-playing video recording equipment, and transmission equipment for remote
monitoring
· PC peripheral equipment
Video capture boards, video editing equipment, and internet monitoring cameras
FEATURES
Input Section
Accepts NTSC/PAL/SECAM composite video signals and S-video signals (NTSC/PAL)
4 composite inputs or 1 composite input + 3 S-video inputs can be connected
Built-in clamp circuits and video amps
Built-in 10-bit A/D converters (2 channels)
Switchable between line lock clock sampling mode and asynchronous sampling mode
Supported operating modes:
Pixel frequency (sampling clock):
NTSC/PAL/SECAM ITU-R BT.601
: 13.5 MHz (27 MHz)
NTSC Square Pixel
: 12.272727 MHz (24.545454 MHz)
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