NSC LM9702SL, LM9702DEV-KIT, LM9702CAMBOARD Datasheet
2002 National Semiconductor Corporation www.national.com
October 2002
LM9702 Real Time Digital Image Processor
General Description
The LM97 02 co ntai ns all function s nee de d to build a VGA digita l
stil l and/or video camera. It incorporate s a 16 bit RISC micr oprocessor, 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 wi thout sac rificing image qua lity or c ost; becau se
the co mp uta t io n ex tensive op er a ti on s ar e p r oc es s ed by c i r cu itry
dedica ted to image processing. T he highly o ptimized mem ory
manage ment provided by the LM9702 keeps the memor y cost of
the complete camera to a minimum.
A chip set compr ising 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
comple te high perfo rmance 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 channe l DMA
- 8 channel versatile timer
- Interrupt controller
- 16 input wake up module
- Full dupl ex USA RT
- µwire/SPI serial port
- 16 ge neral 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 adju stment
- Raw data statistics measurement engine
! Color Im age processing
- Bayer to RGB Interpolation
- Fully programmable color correc tion
- Image sharpening
- Programmable gamma correction
- Thumbn ai l ge ne r at ion
- RGB to YCrCb Conversion
- Digital Gain
! Hardware JPEG Co mp r e ss io n f or both video an d sn aps ho t
! 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.
! Industria l Cam er as
Key Specifications
Array Formats
CIF,VGA, SXGA (B/W)
Input Color Form a t
Bayer Pattern
Digital I m ag e Pr oc es s or
10 bit (12 bit internal)
Compression
-Format
-Ratio
Base Li ne JPE G
Programmable
Video In Frame Rate
up to 15MHz pixel clock
Video O utputs
-USART
-USB
up to 921.6K-bits per second
960K-byt e/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-byt es
Clock Spee d
up 60Mhz fr om 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
Opera tin g t e mp erature
-10
o
C to +85oC
System Block Diagr am
LM9702
CMOS Sensor
Module
Flash
or
RAM
USART
USB
SD CARD
LM9702 Real Time Digital Image Processor
2 www.national.com
Overall Chip Block Diagram
Figure 1. Chip Block Diagram
Ordering Information
Item Descr iption Part Number
LM9702 LM9702 Digital Image Processor with Integrated Pipeline LM9702SL
Color
Interpolation
Edge
Enhancement
Color
Correction
Gamma
Correction
Scaling
Digital Color Processor
Bus Interface
Unit
RGB to YCrCb
Conversion
ACCESS.bus
APB
Config
µwire/SPI
Master
GPIO
CR16C
16K-Bytes
6 Channel
Core Bus
Controller
Interrupt
Controller
CR16C-Microprocessor System
Core Bus
Clk Gen
System Mgmt
AMBA Peripheral Bus
acb
mwire
SDI
+
Debug I/F
usb
sys
DMA
16 Pin
16 Input
Wake Up
usart
gpio
int
jtag
USB
V1.1
Image PreProcessor
Sensor I/F
Offset
Config & Raw Statistics
Bad Pixel
Correction
Color Gain
sen
Bridge
USART
Versatile
Timer
timer
Bus Interface
Unit
Pwr Mgt
POR
Frame
Skipping
mem
Measurement Engine
Compression
RAM
Config
Config
JPEG
Encoder
Bus Interface Unit
SD
(SPI Mode)
sd
Gain
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