NSC LM9702

LM9702 Real Time Digital Image Processor
General Description
Applications
The LM9702 contains all functions needed to build a VGA digital
still and/or video camera. It incorporates a 16 bit RISC microprocessor, 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 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 LM9702 keeps the memory cost of
the complete camera to a minimum.
! 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
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
- µwire/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
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
- µwire/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
Operating temperature
-10oC to +85oC
System Block Diagram
Flash
or
RAM
LM9702
USART
USB
CMOS Sensor
Module
SD CARD
2002 National Semiconductor Corporation
www.national.com
LM9702 Real Time Digital Image Processor
October 2002
Overall Chip Block Diagram
Config & Raw Statistics
Measurement Engine
Bus Interface
Unit
Scaling
RGB to YCrCb
Conversion
JPEG
Encoder
Config
POR
acb
Gamma
Correction
Compression
Config
Clk Gen
Pwr Mgt
Gain
Config
System Mgmt
sys
Color
Correction
Color
Interpolation
Frame
Skipping
Offset
Color Gain
Bad Pixel
Correction
Sensor I/F
sen
Edge
Enhancement
Digital Color Processor
Image PreProcessor
Bus Interface Unit
ACCESS.bus
APB
Bridge
gpio
timer
int
usb
sd
USART
GPIO
16 Pin
CR16C
16K-Bytes
RAM
mem
Bus Interface
Unit
Versatile
Timer
Core Bus
Controller
Interrupt
Controller
USB
V1.1
SD
(SPI Mode)
Core Bus
usart
6 Channel
DMA
µwire/SPI
Master
AMBA Peripheral Bus
mwire
16 Input
Wake Up
jtag
CR16C-Microprocessor System
SDI+
Debug I/F
Figure 1. Chip Block Diagram
Ordering Information
Item
Description
Part Number
LM9702
LM9702 Digital Image Processor with Integrated Pipeline
LM9702SL
2
www.national.com
Related Products
Item
Description
Part Number
Development
Kit
LM9702 digital image processor camera development kit. This kit includes
the above mentioned camera base board, a power supply board, status
LCD board, power adapter, windows application software SNAPS DEV.
LM9702DEV-KIT
Camera
Board
LM9702/04 digital image processor camera base board.
LM9702CAMBOARD
LM9704CAMBOARD
Software
Devlopment
Kit
This kit includes CR16C software development tools, National’s Camera
Operating System (NCOS) & an iTAG emulator.
CR16-IM02-00
CompactFlash Adaptor
This is a small 16 bit CompactFlash adaptor board that can be attached to
the LM9702CamBoard/LM9704CamBoard allowing CompactFlash cards to
be connected to the main system memory bus
LM97COMPACFLASH
SD/MMC
Adaptor
This is a small SD/MMC adaptor board that can be attached to the
LM9702CamBoard/LM9704CamBoard allowing SD and MMC cards to be
connected to the LM9702/LM9704 digital image processor
LM97SDCARD
Head Boards
VGA color sensor LM9627
VGA monochrome sensor LM9617
VGA color sensor LM9628
VGA monochrome sensor LM9618
128x100 monochrome sensor LM9630
VGA monochrome sensor LM9637
VGA color sensor LM9647
SXGA monochrome sensor LM9638
SXGA color sensor LM9648
LM9627HEADBOARD
LM9617HEADBOARD
LM9628HEADBOARD
LM9618HEADBOARD
LM9630HEADBOARD
LM9637HEADBOARD
LM9647HEADBOARD
LM9638HEADBOARD
LM9648HEADBOARD
Lens Kits
1/3” lens kit for the LM9627, LM9617, LM9628 or LM9618
1/5” lens kit for the LM9630
1/4” lens kit for the LM9647, LM9637
1/2” lens kit for the LM9648, LM9638
LM96-1/3LENSKIT
LM96-1/5LENSKIT
LM96-1/4LENSKIT
LM96-1/2LENSKIT
3
www.national.com
LM9702 Real Time Digital Image Processor
Package Information
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