DSP56156 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56156

16-bit Digital Signal Processor

Motorola => Freescale 

Introduction

DSP56156 Features

Freescale Semiconductor, Inc.

DSP56156 Features

Digital Signal Processing Core

• Efficient, object code compatible, 16-bit 56100-Family DSP engine

— Up to 30 Million Instructions Per Second (MIPS) – 33 ns instruction cycle at 60 MHz

— Up to 180 Million Operations Per Second (MOPS) at 60 MHz

— Highly parallel instruction set with unique DSP addressing modes

— Two 40-bit accumulators including extension byte

— Parallel 16 × 16-bit multiply-accumulate in 1 instruction cycle (2 clock cycles)

— Double precision 32 × 32-bit multiply with 72-bit result in 6 instruction cycles

— Least Mean Square (LMS) adaptive loop filter in 2 instructions

— 40-bit Addition/Subtraction in 1 instruction cycle

— Fractional and integer arithmetic with support for multiprecision arithmetic

— Hardware support for block-floating point FFT

— Hardware-nested DO loops including infinite loops

— Zero-overhead fast interrupts (2 instruction cycles)

— Three 16-bit internal data buses and three 16-bit internal address buses for

maximum information transfer on-chip

Memory

• On-chip Harvard architecture permitting simultaneous accesses to program

and memories

• 2048 × 16-bit on-chip program RAM and 64 × 16-bit bootstrap ROM

(or 12 k × 16-bit on-chip program ROM on the DSP56156ROM)

• 2048 × 16-bit on-chip data RAM

• External memory expansion with 16-bit address and data buses

• Bootstrap loading from external data bus, Host Interface, or

Synchronous Serial Interface

Peripheral and Support Circuits

• Byte-wide Host Interface (HI) with Direct Memory Access support

• Two Synchronous Serial Interfaces (SSI) to communicate with codecs and

synchronous serial devices

— Built in µ-law and A-law compression/expansion

— Up to 32 software-selectable time slots in network mode

• 16-bit Timer/Event Counter also generates and measures digital waveforms

• On-chip sigma-delta voice band Codec:

— Sampling clock rates between 100 kHz and 3 MHz

— Four software-programmable decimation/interpolation ratios

— Internal voltage reference ( 2/5 of positive power supply)

— No external components required

2

DSP56156 Data Sheet

MOTOROLA

For More Information On This Product,

Go to: www.freescale.com

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