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TMC2490A Datasheet, PDF (1/36 Pages) Fairchild Semiconductor – Multistandard Digital Video Encoder | |||
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TMC2490A
Multistandard Digital Video Encoder
www.fairchildsemi.com
Features
⢠All-digital video encoding
⢠Internal digital subcarrier synthesizer
⢠8-bit parallel CCIR-601/CCIR-656/ANSI/SMPTE
125M input format
⢠CCIR-624/SMPTE-170M compliant output
⢠Switchable chrominance bandwidth
⢠Switchable pedestal with gain compensation
⢠Pre-programmed horizontal and vertical timing
⢠13.5 Mpps pixel rate
⢠Master or slave (CCIR656) operation
⢠MPEG interface
⢠Internal interpolation ï¬lters simplify output
reconstruction ï¬lters
⢠10-bit D/A converters for video reconstruction
⢠Supports NTSC and PAL standards
⢠Closed-caption waveform insertion
⢠Simultaneous S-Video (Y/C) output
⢠Controlled edge rates
⢠Single +5V power supply
⢠44 lead PLCC package
⢠Parallel and serial control interface
Applications
⢠Set-top digital cable television receivers
⢠Set-top digital satellite television receivers
⢠Studio parallel CCIR-601 to analog conversion
Description
The TMC2490A video encoder converts digital component
video (in 8-bit parallel CCIR-601/656 or ANSI/SMPTE
125M format) into a standard analog baseband television
(NTSC, NTSC-EIA, and all PAL standards) signal with a
modulated color subcarrier. Both composite (single lead) and
S-Video (separate chroma and luma) formats are active
simultaneously at all three analog outputs. Each video output
generates a standard video signal capable of driving a singly-
or doubly-terminated 75 Ohm load.
The TMC2490A is intended for all non-Macrovision
encoder applications.
The TMC2490A is fabricated in a submicron CMOS
process and is packaged in a 44-lead PLCC. Performance is
guaranteed over the full 0°C to 70°C operating temperature
range.
Block Diagram
PD7-0
PIXEL DATA
DEMUX AND
SYNC
EXTRACT
PXCK
Y
HSYNC
VSYNC, B/T
SELC
PDC/CBSEL
LPF
B-Y
INTERPOLATOR
4:2:2 TO 4:4:4
R-Y
LPF
CHROMA
MODULATOR
INTER-
POLATION
FILTER
DIGITAL
SYNC AND
BLANK
GENERATOR
SUBCARRIER
SYNTHESIZER
INTER-
POLATION
FILTER
SERIAL/PARALLEL CONTROL
GLOBAL
CONTROL
10-BIT
D/A
10-BIT
D/A
10-BIT
D/A
REF
SERIAL
PARALLEL
SA1 SA0 SDA SCL D7-0
ADR R/W CS D7-0
SER RESET
CHROMA
LUMA
COMPOSITE
VREF
CBYP
RREF
65-2490(1)A-01
REV. 1.0.2 2/27/02
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