AT75C221-Q208 Datasheet

IC型號：
AT75C221-Q208
PDF描述：
Smart Internet Appliance Processor
文件大?。?/label>
517.53KB
PDF頁數(shù)：
23頁
芯片廠家：
ATMEL

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Features

鈥?/div>

ARM7TDMI

廬

ARM

廬

Thumb

廬

Processor Core

鈥?/div>

鈥?In-Circuit Emulator, 40 MHz operation

16-bit Fixed-point OakDSPCore

廬

鈥?Up to 60 MHz operations

鈥?104K bytes of Integrated Fast RAM, Codec Interface

Ethernet Bridge

鈥?Dual Ethernet 10/100 Mbps MAC Interface

鈥?16-Kbyte Frame Buffer

1 K-Byte Boot ROM, Embedding a Boot Program

鈥?Enable Application Download from DataFlash

廬

External Bus Interface

鈥?On-chip 32-bit SDRAM Controller

鈥?4 Chip Select Static Memory Controller

Multi-level Priority, Individually Maskable, Vectored Interrupt Controller

Three 16-bit Timer/Counters

Two UARTs with Modem Control Lines

Serial Peripheral Interface (SPI)

Two PIO Controllers, Managing up to 48 General-purpose I/O Pins

Supported by a Wide Range of Ready-to-use Application Software

鈥?Multi-tasking Operating System, Networking

鈥?Voice-processing Functions

Available in a 208-lead PQFP Package and 256-ball BGA Package

Power Supplies

鈥?VDDIO 3.3V nominal

鈥?VDDCORE and VDDOSC 1.8V nominal

0擄C to + 70擄C Operating Temperature Range

Smart Internet

Appliance

Processor

(SIAP

鈩?/div>

)

AT75C221

Summary

Description

The AT75C221, Atmel鈥檚 latest device in the family of smart internet appliance proces-

sors (SIAP

鈩?/div>

), is a high-performance processor designed for professional internet

appliance applications such as the Ethernet IP phone. The AT75C221 is built around

an ARM7TDMI microcontroller core running at 40 MHz with an OakDSPCore copro-

cessor running at 60 MHz and a dual Ethernet 10/100 Mbits/sec MAC interface.

In a typical standalone IP phone, the DSP handles the voice processing functions

(voice compression, acoustic echo cancellation, etc.) while the dual-port Ethernet

10/100 Mbits/sec MAC interface establishes the connection to the Ethernet physical

layer (PHY) that links the network and the PC. In such an application, the power of the

ARM7TDMI allows it to run a VoIP protocol stack as well as all the system control

tasks.

Atmel provides the AT75C221 with several software modules, including:

鈥?/div>

A set of drivers for a Linux

廬

kernel capable of driving the embedded peripherals.

A comprehensive set of tunable DSP algorithms for voice processing, tailored to

be run by the DSP subsystem.

6033CS鈥揑NTAP鈥?5/04

型號

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AT75C221-Q208 Datasheet

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