AT76C112 ATMEL

Document overview

  • Manufacturer or author: Provided By digicamel.com
  • PDF pages: 3

Technical content

Features

  • Baseline JPEG Compression/Decompression  Image Resize Engine  16-bit YC Digital Interface for CMOS Imager Input and Display Output  Compatible with Various Types of Display Devices  SDRAM Interface – Support from 16M Bits to 256M Bits  Support for all Flash Card Interfaces (Atmel DataFlash ®, MMC, SD, SSFDC, CompactFlash, Memory Stick)  USB and USART Interfaces for PC Camera Applications  4 Dedicated External Interrupts, Timer Clock Input and Wake-up Pin  Serial Interface for Controlling Camera Components  32 Pins for General-purpose I/O  Up to 2M Bytes Program Space  Support for RTOS  All Low-level Software, Application Samples are Provided  208-pin BGA Package  1.8-volt Core and 3.3-volt I/O Operation

Figure 1. Typical DSC Application Using AT76C112

  • Digital Inputs  Control  Push Buttons  MMC/SPI/SD  SSFDC  DataFlash  Memory Stick External Memory I/F Flash  Flash  SRAM  CompactFlash Flash Card I/F YC I/F From Imager/ To Display High- Performance Digital Camera Processor AT76C112 Summary Rev. 2372AS–DIGICAM–08/02 Note: This is a summary document. A complete document is available under NDA. For more information, please contact your local Atmel sales office.

2 AT76C112

2372AS–DIGICAM–08/02 Description The AT76C112 is a highly integrated solution for digital camera and image playback devices. It combines a number of functions that are required for implementing such devices.  Image data acquisition from CMOS imagers  Image display  Image processing and image storing  Overall system 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 equipment manufacturers to directly access a variety of devices that may be present in a digital camera or image playback system.  Communication with PCs  Communication with Flash cards  Serial communication ports for controlling other devices in the system The design is based on an ARM ® microprocessor that controls the entire chip. A number of hardware resources, controlled by ARM, perform digital imaging functions such as JPEG coding/decoding, image resizing, and DMA access to SDRAM. All these compu- tational-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 CMOS imagers  Interfaces to 16- to 256-Mbit SDRAM, one or two pieces  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)  Maximum 80 mA current in normal operation  1 - 5 mA in standby mode  50 - 100 µA current in sleep mode

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