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TMC2490AR2C PDF预览

TMC2490AR2C

更新时间: 2024-11-21 06:02:31
品牌 Logo 应用领域
CADEKA 编码器
页数 文件大小 规格书
36页 596K
描述
Multistandard Digital Video Encoder

TMC2490AR2C 数据手册

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www.cadeka.com  
TMC2490A  
Multistandard Digital Video Encoder  
Features  
Applications  
• All-digital video encoding  
• Set-top digital cable television receivers  
• Set-top digital satellite television receivers  
• Studio parallel CCIR-601 to analog conversion  
• 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  
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.  
• Single +5V power supply  
• 44 lead PLCC package  
• Parallel and serial control interface  
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  
LPF  
LPF  
B-Y  
PIXEL DATA  
DEMUX AND  
SYNC  
INTERPOLATOR  
4:2:2 TO 4:4:4  
CHROMA  
MODULATOR  
10-BIT  
D/A  
CHROMA  
LUMA  
PD  
7-0  
R-Y  
INTER-  
POLATION  
FILTER  
EXTRACT  
PXCK  
10-BIT  
D/A  
SUBCARRIER  
SYNTHESIZER  
Y
DIGITAL  
SYNC AND  
BLANK  
HSYNC  
VSYNC, B/T  
SELC  
10-BIT  
D/A  
COMPOSITE  
GENERATOR  
INTER-  
POLATION  
FILTER  
PDC/CBSEL  
REF  
GLOBAL  
CONTROL  
SERIAL/PARALLEL CONTROL  
V
REF  
C
R
BYP  
REF  
SERIAL  
PARALLEL  
SA  
SA  
SDA SCL  
D
D
SER RESET  
1
0
7-0  
7-0  
65-2490(1)A-01  
ADR R/W CS  
REV. 1.0.2 2/27/02  

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