AT75C320 Datasheet | Atmel

Features ARM7TDMI® ARM® Thumb® Processor Core Two 16-bit Fixed-point Oak DSPCore® Cores 256 x 32-bit Boot ROM 88K Bytes of Integrated Fast RAM for Each DSP Flexible External Bus Interface with Programmable Chip Selects Dual Codec Interface Multi-level Priority, Individually Maskable, Vectored Interrupt Controller Three 16-bit Timers/Counters Additional Watchdog Timer Two USARTs with FIFO and Modem Control Lines Industry -standard Serial Peripheral Interface (SPI) Up to 24 General-purpose I/O Pins On-chip SDRAM Controller for Embedded ARM7TDMI and Oak DSPCore JTAG Debug Interface Software Development Tools Available for ARM7TDMI and Oak DSPCore Supported by a Wide Range of Ready-to-use Application Software, including Multitasking Operating System, Networking, Modems and Voice Processing Functions - Available in 160-lead PQFP Package - 2.5V Power Supply for the core and the PLL Pins, 3.3V Power Supply for Other I/O Pins - - - - - - - - - - - - - - - - Smart Internet Appliance Processor (SIAP™) AT75C320 Preliminary Description The Atmel AT75C320 Smart Internet Appliance Processor (SIAP™) is a high-performance processor specially designed for Internet appliance applications, such as Internet telephony (Voice-over-Internet Protocol - Vo IP). The AT75C320 is a derivative version of the AT75C310. The device is built around an ARM7TDMI microcontroller core running at 40 MIPS with two DSP co-processors running at 60 MIPS each - all three processors delivering unmatched performance for low power consumption. In a typical standalone Vo IP phone, one DSP handles the voice processing functions (voice pression, acoustic echo cancellation, etc.), while the other one deals with the telephony functions (dialing, line echo cancellation, caller ID detection, high-speed modem, etc.). In such an application, the power of the ARM7TDMI allows it to run the Vo IP protocol stack as well as all the system control tasks. Atmel provides the AT75C320 with three levels of software modules: - - - a...