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AT76C901 Datasheet(PDF) 1 Page - ATMEL Corporation |
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AT76C901 Datasheet(HTML) 1 Page - ATMEL Corporation |
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1 / 4 page  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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