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Features
* * * * * * * * * * * * * * * * * * * * * *
DSP Functions for CCD/CMOS Image Processing Video Encoder, Including Line Driver for NTSC/PAL TV Signal Baseline JPEG Compression/Decompression SDRAM Interface Support for All Flash Card Interfaces (Atmel DataFlash(R), MMC, SSFDC, Compact Flash) Integrated DACs for LCD USB and USART Interfaces for PC Camera Applications Small-Segment LCD Driver 32 Pins for General-purpose I/O 5 External Interrupts, Timer Clock Input and Wake-up Pin DACs for Camera Control Functions and Audio Output ADCs for Monitoring Camera Analog Inputs, Audio Input and Switch Input, Like Window Comparator Serial Interface for Controlling Camera Components Up to 2M Bytes Program Space Support for RTOS All Low-level Software, Application Samples are Provided Built-in Outputs Include a CVBS Output with a Line Driver, YC16-bit Digital Output, RGB 565 Digital Output, Digital Composite Output and RGB Analog Output Compatible with Various Types of Display Devices SDRAM Support from 16M Bits to 256M Bits Direct Interface to Epson and UNIPAC LCDs 280-pin FlexBGA Package 3.3-volt Core and I/O Operation
HighPerformance Digital Camera Processor AT76C110
Figure 1. Typical DSC Application Using AT76C110
SDRAM * Digital inputs * Control * Push buttons
Summary
SDRAM I/F CCD CCD F/F
GPIO
DAC with L.D. RGB DAC
TV
LCD * Iris Control * Shutter Motor * Lens Motor * Flash Bulb Control * AGC Gain * Voice Output * Battery-level Check * Photo Detection (AE) * Focus Sensor * Voice Input Small-segment LCD
CDS A/D
Serial Camera I/F
DACs
RS232 Port (PC)
USART ADCs
USB (PC)
USB External Memory I/F Flash Card I/F SSLCD
Flash
* Flash * CF
* MMC/SPI * SSFDC * DataFlash(R)
Rev. 1475AS-IMAGE-06/02
Note: This is a summary document. A complete document is available under NDA. For more information, please contact your local Atmel sales office.
1
Description
The AT76C110 is a highly integrated solution for digital cameras. It combines a number of functions that are required in implementing digital cameras: * * * * * * * * Image data acquisition and capturing from either CCD or CMOS imagers Image display Image processing and image storing Overall camera management Control of general-purpose I/O functions Data communication Control of user functions On-screen display
It also provides a large number of interfaces that allow camera manufacturers to directly access a variety of devices that may be present in a digital camera. * * * Communication with PCs Communication with Flash cards Serial communication ports for controlling other devices in the camera
The design is based on an ARM(R) microprocessor that controls the entire chip. A number of hardware resources, controlled by ARM, perform digital camera functions such as image DSP processing, JPEG coding/decoding, DMA access to SDRAM and video encoding. All these computation-intensive functions are implemented in hardware which can be programmed according to user specifications, thus allowing ARM to be free for other user-defined functions.
Capabilities
* * * * * * * * * * * *
Supports up to 16 megapixel CCDs/CMOS (10 - 30 MHz CCDs) CCD colors are limited to the Bayer arrangements of the RGB primary colors Interfaces to 16 - 256-Mbit SDRAM, one or two pieces 30 frames/sec video display mode (NTSC) 15 frames/sec capture mode (VGA resolution) Up to 1.5M bytes/sec read/write from/to Flash cards 2M bytes external Flash ROM for program space 2M bytes external SRAM for program/working space (optional) Full-speed USB interface (mass storage, and image class) 100 - 150 mA current 1 - 5 mA in standby mode 50 A current in sleep mode
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AT76C110
1475AS-IMAGE-06/02
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(c) Atmel Corporation 2002. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life support devices or systems. ATMEL (R) and DataFlash (R) are the registered trademark of Atmel. ARM7TDMI (R), ARM (R), Thumb (R) and AMBA TM are the trademarks (or registered trademarks) of ARM, Ltd. Microsoft(R), Windows (R) 98/CE and Windows NT (R) are the registered trademarks of Microsoft Corporation; SunSolaris TM is trademark of Sun Corporation. Other terms and product names may be the trademarks of others. Printed on recycled paper.
1475AS-IMAGE-06/02 xM

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