DSP56852PB View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56852PB

16-bit Digital Signal Processor

Motorola => Freescale 

Freescale Semiconductor, Inc.

Part 1 Overview

1.1 DSP56852 Features

1.1.1 Digital Signal Processing Core

• Efficient 16-bit DSP 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

1.1.2 Memory

• Harvard architecture permits as many as three simultaneous accesses to program and data memory

• On-chip memory includes:

— 6K × 16-bit Program SRAM

— 4K × 16-bit Data SRAM

— 1K × 16-bit Boot ROM

• 21 External Memory Address lines, 16 data lines and four (4) programmable chip select signals

1.1.3 Peripheral Circuits for DSP56852

• General Purpose 16-bit Quad Timer with two external pins*

• One (1) Serial Communication Interface (SCI)*

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

module*

• Interrupt Controller

• Computer Operating Properly (COP)/Watchdog Timer

• JTAG/Enhanced On-Chip Emulation (EOnCE) for unobtrusive, real-time debugging

2

DSP56852 Technical Data

For More Information On This Product,

Preliminary

Go to: www.freescale.com

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