DSP56852 General Description

? 120 MIPS at 120MHz

? 6K x 16-bit Program SRAM

? 4K x 16-bit Data SRAM

? 1K x 16-bit Boot ROM

? 21 External Memory Address lines, 16 data lines and four chip selects

? One (1) Serial Port Interface (SPI) or one (1) Improved Synchronous Serial Interface (ISSI)

? One (1) Serial Communication Interface (SCI)

? Interrupt Controller

? General Purpose 16-bit Quad Timer

? JTAG/Enhanced On-Chip Emulation (OnCE?) for unobtrusive, real-time debugging

? Computer Operating Properly (COP)/Watchdog Timer

? 81-pin MAPBGA package

? Up to 11 GPIO

56852 Features

Core

? Efficient 16-bit engine with dual Harvard architecture

? 120 Million Instructions Per Second (MIPS) at 120MHz core frequency

? Single-cycle 16 × 16-bit parallel Multiplier-Accumulator (MAC)

? Four (4) 36-bit accumulators including extension bits

? 16-bit bidirectional shifter

? Parallel instruction set with unique DSP addressing modes

? Hardware DO and REP loops

? Three (3) internal address buses and one (1) external address bus

? Four (4) internal data buses and one (1) external data bus

? Instruction set supports both DSP and controller functions

? Four (4) hardware interrupt levels

? Five (5) software interrupt levels

? Controller-style addressing modes and instructions for compact code

? Efficient C Compiler and local variable support

? Software subroutine and interrupt stack with depth limited only by memory

? JTAG/Enhanced OnCE debug programming interface