LM9704 Real Time Digital Image Processor
October 2002
LM9704 Real Time Digital Image Processor
General Description
The LM9704 contains all functions needed to build an SXGA or
VGA digital still and video camera. It incorporates a 16 bit RISC
microprocessor, a flexible image processing pipeline, hardware
JPEG compression, and the required peripheral modules in a
single IC. This architecture allows a very fast click-to-click time
and full resolution 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 LM9704 keeps the mem-
ory cost of the complete camera to a minimum.
A chip set comprising of the LM9704 and a National SXGA or
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 digi-
tal still and/or video camera.
Applications
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PC Cameras
Dual Mode Cameras
Digital Still Cameras
Clip-on Cameras for PDA鈥檚, Cell Phones, etc.
Embedded Cameras for PDA鈥檚, Cell Phones, etc.
Industrial Cameras
Key Specifications
Array Formats
Input Color Format
Digital Image Processor
Compression
- Format
- Ratio
Video In Frame Rate
Video Outputs
- USART
- USB
External CR16C Memory
- Memory Type
- Address Space
- Speed
Serial Interfaces
- ACCESS.bus
-
碌wire/SPI
16 bit RISC Processor
- MIPS
- Internal Memory
Clock Speed
Power Supply
- Core
- IO
CIF, VGA, SXGA
Bayer Pattern
10 bit (12 bit internal)
Base Line JPEG
Programmable
up to 15MHz pixel clock
up to 921.6K-bits per second
960K-byte/s
SRAM, Flash, Compact Flash,
EEPROM
up to 16 Mbyte
up to 36MHz
up to 400KHz
up to 6.0 MHz
up to 36
32K-bytes
up to 60 Mhz from 12MHz Crystal
2.25 to 2.75 Volt
2.7 to 3.6 Volt
Features
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Embedded 16 bit RISC processor system
Up to 16M-bytes of external memory addressing space
32K-bytes Internal RAM
6 channel DMA
8 channel versatile timer
Interrupt controller
16 input wake up module
Full duplex USART
碌wire/SPI
serial port
16 general purpose IOs (GPIO)
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
Average Power Dissipation 95mW
Package
Operating temperature
128 Pin Laminated CSP
-10
o
C to +85
o
C
System Block Diagram
Flash
or
RAM
LM9704
USART
USB
CMOS Sensor
Module
錚?/div>
2002 National Semiconductor Corporation
www.national.com
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