欢迎访问ic37.com |
会员登录 免费注册
发布采购

TMC22071AKHC 参数 Datasheet PDF下载

TMC22071AKHC图片预览
型号: TMC22071AKHC
PDF下载: 下载PDF文件 查看货源
内容描述: 同步锁相视频数字化 [Genlocking Video Digitizer]
分类和应用:
文件页数/大小: 24 页 / 227 K
品牌: CADEKA [ CADEKA MICROCIRCUITS LLC. ]
 浏览型号TMC22071AKHC的Datasheet PDF文件第2页浏览型号TMC22071AKHC的Datasheet PDF文件第3页浏览型号TMC22071AKHC的Datasheet PDF文件第4页浏览型号TMC22071AKHC的Datasheet PDF文件第5页浏览型号TMC22071AKHC的Datasheet PDF文件第6页浏览型号TMC22071AKHC的Datasheet PDF文件第7页浏览型号TMC22071AKHC的Datasheet PDF文件第8页浏览型号TMC22071AKHC的Datasheet PDF文件第9页  
www.cadeka.com
TMC22071A
Genlocking Video Digitizer
Features
Fully integrated acquisition
3-channel video input multiplexer
Two-stage video clamp
Automatic gain adjustment
Sync detection and separation
Pixel and subpixel adjustment of HSYNC-to-Video
timing
Genlock to NTSC or PAL inputs
Clock generation
8-bit video A/D converter
Microprocessor interface
Line-locked pixel rates
- 12.27 MHz NTSC
- 13.5 MHz NTSC or PAL
Direct interface to TMC22x9x encoders
Built-in circuitry for crystal oscillator
No tuning or external voltage reference required
68 Lead PLCC or 100 Lead MQFP package
Description
The TMC22071A Genlocking Video Digitizer converts stan-
dard baseband composite NTSC or PAL video into 8-bit dig-
ital composite video data. It extracts horizontal and vertical
sync signals and generates a pixel clock for the on-board
8-bit A/D converter and a 2x clock for the transfer of data to
subsequent video processing decoding or encoding with the
TMC22x5y Video Decoder or TMC22x9x Digital Video
Encoder family. It also measures the color subcarrier phase
and frequency and provides this data to the Encoder (for gen-
locked color NTSC or PAL encoding), or a frame buffer (for
frame capture) over the digital composite video port.
The TMC22071A includes a three-channel video input mul-
tiplexer, analog clamp, variable gain amplifier, and digital
back porch clamp. The on-board oscillator circuitry gener-
ates the clock from a 20 MHz crystal or the clock source may
be an external oscillator. It is programmable over a micro-
processor interface for NTSC or PAL operation. No external
component changes and no production tuning or service
adjustments are ever required.
The TMC22071A is fabricated in an advanced CMOS
process, and is packaged in a 68 Lead PLCC or 100 Lead
MQFP. Its performance is guaranteed from 0°C to 70°C.
Applications
• Frame grabber
• Digital VCR/VTR
• Desktop video
Block Diagram
BACK PORCH
CLAMP
VIN1
MUX
VIN2
VIN3
D/A
LOWPASS
FILTER
ANALOG
CLAMP
GAIN
A/D
SUBCARRIER
PHASE-LOCKED
LOOP
DATA
SELECTOR
CVBS7-0
SYNC
SEPARATOR
GVSYNC
GHSYNC
D/A
CONTROL
+1.2V
DIRECT
DIGITAL
SYNTHESIZER
HORIZONTAL
PHASE-LOCKED
LOOP
PXCK
LDV
VALID
PFD IN
CLK IN
RT
EXT PXCK
COMP
VREF
A0
CS
R/W
INT
PXCK SEL
CLK
OUT
RESET
D0
DDS
OUT
RB
CBYP
65-22071-01
MICROPROCESSOR
INTERFACE
ANALOG INTERFACE
DDS/PIXEL CLOCK INTERFACE
Rev. 1.0.5