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PDF LM9704 Data sheet ( Hoja de datos )
| Número de pieza | LM9704 | |
| Descripción | Real Time Digital Image Processor | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM9704 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
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October 2002
LM9704 Real Time Digital Image Processor
General Description
Applications
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.
Features
! 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
- µwire/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
www.DataSh!eet4CUo.cloormImage 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
! 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
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
- µwire/SPI
up to 400KHz
up to 6.0 MHz
16 bit RISC Processor
- MIPS
- Internal Memory
up to 36
32K-bytes
Clock Speed
up to 60 Mhz from 12MHz Crystal
Power Supply
- Core
- IO
2.25 to 2.75 Volt
2.7 to 3.6 Volt
Average Power Dissipation 95mW
Package
128 Pin Laminated CSP
Operating temperature
-10oC to +85oC
System Block Diagram
Flash
or
RAM
LM9704
USART
USB
CMOS Sensor
Module
2002 National Semiconductor Corporation
www.national.com
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet LM9704.PDF ] | |
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