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AT76C901 Datasheet(PDF) 1 Page - ATMEL Corporation

Part No. AT76C901
Description  Wireless VoIP Phone-based on the 802.11 Standard Processor AT76C901 Summary
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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1652AS–VoIP–06/04
Note: This is a summary datasheet. A complete document is available
under NDA. For more information, please contact your local Atmel Sales
Office.
Features
ARM7TDMI® Core for Implementing Call Control Protocols (SIP, H.323,
MGCP/MEGACO) TCP/IP and Controlling the Phone Functions
Internal 8-Kbyte Program and Data Cache Used for Fast Execution of the
Communications Protocols and RTOS with Reduced Power Consumption
16-bit DSP for Implementing the G.723.1, G.729ab, and G.711 Standards, in Addition to
Acoustic Echo Cancellation
Integrated Audio Codec with Both Main and Auxiliary Paths
Wireless Interface Following the IEEE 802.11b Standard
Wireless LAN MAC Unit with ARM7TDMI RISC Processor
Glueless External Memory Interface Supporting Up to 16 Mbytes of External
SRAM/Flash and 32 Mbytes of SDRAM
Glueless Interface to 11 Mbps External 802.11-based Baseband Processor
Enciphering/Deciphering of Wireless Data On-the-fly, by the Implementation of the RC4
Code Ensures Maximum Privacy of Data
Supports 11 Mbps Rates with Automatic Fallback to 5.5, 2, and 1 Mbps
USB Slave Interface (Control, Interrupt, Bulk-in, and Bulk-out Endpoints)
Analog-to-Digital Converter with Up to 400K Samples/Sec on Two Input Channels
One USART and One UART
Serial Peripheral Interface (SPI)
64-key Keyboard Interface
4 x 4 LED Matrix Controller
Minimum of 13 GPIO Pins (More are Available Based on Configuration)
217-pin PBGA Package
Low-voltage 3.3 V Operation
Figure 1. Typical Application Using The AT76C901
Peripherals
Audio Codec
DSP
802.11
Interface
- Battery Management
- Voltage Regulation
- LCD Bias
- Other Phone ASICs
ARM7TDMI
Subsystem
Radio
Circuitry
Flash
SRAM
Keyboard
Buzzer
LED
LCD
TWI Bus
Audio to Headset
Serial Port
Accessory Controls
Battery Charge Voltage
Speaker
Microphone
AT76C901
External
Bus
Interface
ARM7TDMI
802.11 MAC
Protocol Handing
Control
Wireless VoIP
Phone-based
on the 802.11
Standard
Processor
AT76C901
Summary




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