參數(shù)資料
型號： TMC2491AR2C
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 顏色信號轉換
英文描述： COLOR SIGNAL ENCODER, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 1/36頁
文件大小： 208K
代理商： TMC2491AR2C
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 lters simplify output
reconstruction lters
10-bit D/A converters for video reconstruction
Supports NTSC and PAL standards
Output encoding per Macrovision Copy Protection
(Revision 7.01) available (TMC2491A)
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 TMC2490(1)A video encoder converts digital compo-
nent 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 TMC2491A is intended for those applications like DVD
or set-top boxes where Macrovision 7.01 compliance is
required. The TMC2490A is intended for all other non-
Macrovision encoder applications. A separate data sheet
supplement is available to Macrovision licensees.
The TMC2490(1)A 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
PIXEL DATA
DEMUX AND
SYNC
EXTRACT
DIGITAL
SYNC AND
BLANK
GENERATOR
PD7-0
HSYNC
VSYNC, B/T
SELC
PXCK
Y
PDC/
CBSEL
INTERPOLATOR
4:2:2 TO 4:4:4
CHROMA
MODULATOR
GLOBAL
CONTROL
SERIAL/PARALLEL CONTROL
SUBCARRIER
SYNTHESIZER
CHROMA
10-BIT
D/A
INTER-
POLATION
FILTER
B-Y
LPF
R-Y
LUMA
10-BIT
D/A
COMPOSITE
VREF
CBYP
RREF
10-BIT
D/A
REF
RESET
65-2490(1)A-01
SER
INTER-
POLATION
FILTER
D7-0
SCL
CS
SDA
R/
W
SA0
ADR
SA1
SERIAL
PARALLEL
S-VIDEO
TMC2490A/TMC2491A
Multistandard Digital Video Encoder
Rev. 1.0.1
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