AT75C221 Datasheet | Atmel

Features - ARM7TDMI® ARM® Thumb® Processor Core - In-Circuit Emulator, 40 MHz operation - 16-bit Fixed-point Oak DSPCore® - - - - - - - - - - - - - Up to 60 MHz operations - 104K bytes of Integrated Fast RAM, Codec Interface Ethernet Bridge - Dual Ethernet 10/100 Mbps MAC Interface - 16-Kbyte Frame Buffer 1 K-Byte Boot ROM, Embedding a Boot Program - Enable Application Download from Data Flash® External Bus Interface - On-chip 32-bit SDRAM Controller - 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 - Multi-tasking Operating System, Networking - Voice-processing Functions Available in a 208-lead PQFP Package and 256-ball BGA Package Power Supplies - VDDIO 3.3V nominal - VDDCORE and VDDOSC 1.8V nominal 0°C to + 70°C Operating Temperature Range Smart Internet Appliance Processor (SIAP™) AT75C221 Summary Description The AT75C221, Atmel’s latest device in the family of smart internet appliance processors (SIAP™), 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 Oak DSPCore coprocessor 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 pression, 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 Vo IP protocol stack as well as all the system control tasks. Atmel provides the AT75C221 with several software modules,...