
PRELIMINARY INFORMATION
 describes products that are not in full production at the time of printing. Specifications are based on design goals
and limited characterization. They may change without notice. Contact Fairchild Semiconductor for current information.
www.fairchildsemi.com
Features
 Very high performance, low cost
 Adaptive comb-based decoding
 Multiple pin-compatible versions
- 3-line, 2-line, and band-split 
- 8- and 10-bit processing
 Internal digital linestores 
 Supports NTSC/PAL field and NTSC frame based 
decoding
 Multiple input formats
- CCIR-601/624 (D1), D2, CVBS, YC
 Multiple output formats
- CCIR-601/624 (D1), RGB, YC
B
C
R
 10-18 Mpps data rate
 Parallel and serial control interface
 Single +5V power supply
Applications
 Studio television equipment
 Personal computer video input
 MPEG and JPEG compression inputs
Description
The TMC22x5yA family of Digital Video Decoders offers 
unprecedented, broadcast-quality video processing perfor-
mance in a single chip. It accepts line-locked or subcarrier-
locked composite, YC, or D1 digital video and produces dig-
ital components in a variety of formats. 
An internal three-line adaptive comb decoder structure pro-
duces optimal picture quality with a wide range of source 
material. NTSC/PAL field and NTSC frame based decoding 
is supported with external memory. Full comb programma-
bility allows the user to tailor the decoder’s response to a 
particular systems goals.
A family of products offers 3-line, 2-line, and simple decod-
ers in 8-bit and 10-bit versions—all in a pin and software-
compatible format. Serial and parallel control ports are pro-
vided. These submicron CMOS devices are packaged in a 
100-lead Metric Quad Flat Pack (MQFP).
Related Products
 TMC22071  Genlocking Video Digitizer
 TMC22x9x  8 bit Digital Video Encoders
 TMC2081  Digital Video Mixer
 TMC3003  Triple 10-bit D/A Converter
 TMC1185 10 bit A/D converter
 TMC2192 10 bit video encoder
 TMC2072 Enhanced Genlocking Video Digitizer
Block Diagram
65-22x5y-01
Input
Processor
Output
Processor
Adaptive
Comb
Filter
VIDEOA
9-0
VIDEOB
9-0
G/Y
9-0
MASTER
1-0
BUFFER
CLOCK
LDV
HSYNC
VSYNC
DHSYNC
DVSYNC
DREF
FID
2-0
B/Cb
9-0
R/Cr
9-0
SER
A1-0
SA
2-0
RESET
SET
R/W
SDA
CS
SCL
D7-0
Parallel Control
Serial Control
Global Control
Internal
Sync Pulse
Generator
Y/C Split0
Y/C Split1
Linestore1
Linestore2
Y/C Split2
Chroma
Demod
Comb
Fail
Burst
Locked
Loop
T MC22x5yA
Multistandard Digital Video Dec oder
T hree-Line Adaptive Comb Dec oder Family, 8 & 10 bit
Rev. 0.9.0