ATMEL AT76C113 High- performance digital camera processor Datasheet

Features
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DSP Functions for CCD/CMOS Image Processing
Baseline JPEG Compression/Decompression
MPEG-1 Encode/Decode at 24 fps QVGA
Compatible with Various Types of Display Devices
Video Encoder Including Line Driver for NTSC/PAL TV Signal
Integrated DACs for LCD Interface
Direct Interface to Epson® and AU LCDs
Digital Outputs Include: Composite, 16-bit YC, RGB 565
SDRAM Interface – Supports from 16M Bits to 256M Bits
Unified Memory Architecture (All Program and Data Stored in SDRAM)
Support for Most Flash Card Interfaces (Atmel DataFlash®, MMC, SD, SSFDC, Memory
Stick™)
USB 1.1 Host/Slave Controller and USART Interfaces for PC Camera and Printing
Applications
Up to Nine External Interrupts and Wake-up Pin
Serial Peripheral Interface for Loading Boot Code and Controlling Camera
Components
Two DACs for Camera Control Functions and Audio Output
Four ADC Channels for Monitoring Camera Analog Inputs, Audio Input, Switch Input,
Etc.
Audio Data Interface for Connection to External Stereo ADC/DAC
Three General-purpose Timers for Waveform Generation (PWM, Etc.) and Event
Monitoring
Up to 62 Pins for General-purpose I/O
Up to 2M Bytes Program Space
Support for RTOS
All Low-level Software, Application Samples are Provided
208-ball BGA Package
1.8-Volt Core and 3.3V I/O Operation
HighPerformance
Digital Camera
Processor
AT76C113
Summary
Figure 1. Typical DSC Application Using AT76C113
Program
Flash
SDRAM
(Optional)
• Digital Inputs
• Control
• Push Buttons
GPIO,
Timers,
INT
Memory I/F
CCD
• Serial EEPROM
• CDS A/D
• Timing Generator
RS232
Port (PC)
USB Host
and Slave
Peripherals
CCD
I/F
DAC
with
L.D.
TV
RGB
DAC
LCD
DACs
• Iris Control
• Shutter Motor
• Lens Motor
• Flash Bulb Control
• AGC Gain
• Voice Output
ADC
• Battery-level Check
• Photo Detection (AE)
• Focus Sensor
• Voice Input
SPI
USART
USB
Flash
Card
I/F
• MMC/SD
• SSFDC
• DataFlash
• Memory Stick
Rev. 2391BS–IMAGE–05/03
Note: This is a summary datasheet. A complete document is available
under NDA. For more information, please contact your local Atmel Sales
Office.
1
Description
The AT76C113 is a highly integrated solution for digital cameras. It combines a number
of functions that are required in implementing digital cameras.
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Image data acquisition and capturing from either CCD or CMOS imagers
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Image display
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Image processing and image storing
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Overall camera management
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Control of general-purpose I/O functions
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Data communication
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Control of user functions
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On-screen Display
AT76C113 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.
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Communication with PCs
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Communication with Flash cards
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Serial communication ports for controlling other devices in the camera
The design is based on an ARM® 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, MPEG-1 coding/decoding, DMA
access to SDRAM, and video encoding. All these computationally-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.
Part Versions
The AT76C113 device comes in six versions, each with slightly different features. These
are summarized in Table 1. In the rest of this document, the AT76C113-HU part is
discussed.
Table 1. AT76C113 Part Versions
2
Part Number
Maximum Imager
Resolution (Pixels)
Maximum SDRAM
Size (Mbytes)
AT76C113-S
< 2M
128
Slave Only
AT76C113-U
< 2M
128
Slave and Host
AT76C113-H
> 2M
512
Slave Only
AT76C113-HU
> 2M
512
Slave and Host
AT76C113-P
> 2M
512
Slave Only
AT76C113-PU
> 2M
512
Slave and Host
USB Functionality
AT76C113
2391BS–IMAGE–05/03
AT76C113
Capabilities
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Supports up to 16-megapixel CCDs/CMOS (10 - 35 MHz CCDs)
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CCD colors are limited to the Bayer arrangements of the RGB primary colors
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Interfaces to 16 - 256-Mbit SDRAM, one or two pieces
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30 frames/sec video display mode (NTSC)
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30 frames/sec capture mode (VGA resolution)
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24 frames/sec MPEG-1 encode/decode (QVGA resolution)
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Up to 1.5M bytes/sec read/write from/to Flash cards
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2M bytes external Flash ROM for program space
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Full-speed USB 1.1 Host/Slave Controller (mass storage and image class for slave
operation)
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Maximum 70 mA current in normal operation
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1 - 5 mA in standby mode, < 100 µA current in sleep mode
3
2391BS–IMAGE–05/03
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2391BS–IMAGE–05/03
xM
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