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參數(shù)資料
| 型號(hào)： | LM9702SL |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LM9702 Real Time Digital Image Processor |
| 中文描述： | LM9702實(shí)時(shí)數(shù)字圖像處理器 |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 74K |
| 代理商： | LM9702SL |
2002 National Semiconductor Corporation
www.national.com
October 2002
LM9702 Real Time Digital Image Processor
General Description
The LM9702 contains all functions needed to build a VGA digital
still and/or video camera. It incorporates a 16 bit RISC micropro-
cessor, a flexible image processing pipeline, hardware JPEG
compression, and the required periphery modules in a single IC.
This architecture allows a very fast click-to-click time and full res-
olution video without sacrificing image quality or cost; because
the computation extensive operations are processed by circuitry
dedicated to image processing. The highly optimized memory
management provided by the LM9702 keeps the memory cost of
the complete camera to a minimum.
A chip set comprising of the LM9702 and a National VGA CMOS
image sensor complemented by a lens, battery, compact flash,
power management for the battery, and LCD (optional) yields a
complete high performance cost effective digital still and/or video
camera.
Features
!
Embedded 16 bit RISC processor system
- Up to 16M-bytes of external memory addressing space
- 16K-bytes Internal RAM
- 6 channel DMA
- 8 channel versatile timer
- Interrupt controller
- 16 input wake up module
- Full duplex USART
-
μ
wire/SPI serial port
- 16 general purpose IOs (GPIO)
- SD Memory Card Interface (SPI Mode)
!
Glueless CMOS image sensor interface
!
ACCESS.bus serial interface for imager sensor control
!
Integrated USB v1.1 for connection to PC
!
Raw Image Data Processor
- Defective pixel correction
- Digital gain and brightness adjustment
- Raw data statistics measurement engine
!
Color Image processing
- Bayer to RGB Interpolation
- Fully programmable color correction
- Image sharpening
- Programmable gamma correction
- Thumbnail generation
- RGB to YCrCb Conversion
- Digital Gain
!
Hardware JPEG Compression for both video and snapshot
!
System management
- Internal Clock generation from 12MHz Crystal
- Power management
- Reset generation
!
JTAG based serial on-chip debug interface
Applications
!
PC Cameras
!
Dual Mode Cameras
!
Digital Still Cameras
!
Clip-on Cameras for PDA’s, Cell Phones, etc.
!
Embedded Cameras for PDA’s, Cell Phones, etc.
!
Industrial Cameras
Key Specifications
Array Formats
CIF,VGA, SXGA (B/W)
Input Color Format
Bayer Pattern
Digital Image Processor
10 bit (12 bit internal)
Compression
- Format
- Ratio
Base Line JPEG
Programmable
Video In Frame Rate
up to 15MHz pixel clock
Video Outputs
- USART
- USB
up to 921.6K-bits per second
960K-byte/s
External CR16C Memory
- Memory Type
- Address Space
- Speed
SRAM, Flash, Compact Flash,
EEPROM
up to 16 Mbyte
up to 36MHz
Serial Interfaces
- ACCESS.bus
-
μ
wire/SPI
up to 400KHz
up to 6.0 MHz
16 bit RISC Processor
- MIPS
- Internal Memory
up to 36
16K-bytes
Clock Speed
up 60Mhz from 12MHz Crystal
Power Supply
- Core
- IO
2.25 to 2.75 Volt
2.7 to 3.6 Volt
Average Power Dissipation 90mW
Package
128 Laminated CSP
-10
o
C to +85
o
C
Operating temperature
System Block Diagram
LM9702
CMOS Sensor
Module
Flash
or
RAM
USART
USB
SD CARD
L
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