Motorola DSP56800 Manual page 28

Introduction
• 16-bit Timer Module
— Three independent 16-bit timers
— Each may be clocked from a pin, the oscillator clock, or the PLL output
— Zero to two pins required
• Computer operating properly (COP) and real-time timer module
— COP timer uses output of real-time timer chain
— Programmable real-time timer
— Count register readable
— No pins required
• Synchronous serial interface module (SSI)
— Synchronous serial interface for hooking up to codecs
— Frame sync and gated clock modes
— Independent transmit and receive channels
— Up to 32-slot network mode available
— Three to six pins required
• Serial peripheral interface (SPI)
— Simple, synchronous, 8-bit serial interface for interfacing to MCUs and MCU-style peripherals
— Master and slave modes
— Four pins required
• Programmable general-purpose I/O
— Pins can be individually programmed as input or output
— Pins can be individually multiplexed between peripheral functionality and GPIO
— Pins can have interrupt capability
More blocks will be defined in the future to meet customer needs.
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