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參數(shù)資料
| 型號(hào)： | TMC2490A |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Multistandard Digital Video Encoder |
| 中文描述： | 多標(biāo)準(zhǔn)數(shù)字視頻編碼器 |
| 文件頁(yè)數(shù)： | 1/36頁(yè) |
| 文件大小： | 510K |
| 代理商： | TMC2490A |
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www.fairchildsemi.com
REV. 1.0.2 2/27/02
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 filters simplify output
reconstruction filters
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
range.
°
C operating temperature
Block Diagram
PIXEL DATA
DEMUX AND
SYNC
EXTRACT
DIGITAL
SYNC AND
BLANK
GENERATOR
PD
7-0
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
LPF
R-Y
LUMA
10-BIT
D/A
COMPOSITE
V
REF
C
BYP
R
REF
10-BIT
D/A
REF
RESET
65-2490(1)A-01
SER
INTER-
POLATION
FILTER
D
7-0
D
7-0
SCL
CS
SDA
R/W
SA
0
ADR
SA
1
SERIAL
PARALLEL
S
TMC2490A
Multistandard Digital Video Encoder
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