DSP56857 datasheet(27/662 Pages) FREESCALE

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Preface, Rev. 4

Freescale Semiconductor

xxv

Preface

About This Manual

Features of the 5685X 16-bit Digital Signal Controllers (DSCs) are described in this manual.

Details of memory, operating modes, and peripheral modules are documented here. This manual

is intended to be used with the 56800E Reference Manual (DSP56800ERM), describing the

Central Processing Unit (CPU), programming models, and instruction set details. The

DSP56853/+ Technical Data Sheet provides electrical specifications as well as timing, pinout,

and packaging descriptions.

Audience

Information in this manual is intended to assist design and software engineers to integrate a

5685x device into a design and/or while developing application software.

Manual Organization

This manual is arranged in sections described below:

•

Chapter 1, 5685X Overview—provides a brief overview,

describing the structure of this document, including lists of other documentation necessary

to use these chips.

•

Chapter 2, Pin Descriptions—describes package pins for each device and how the pins are

grouped into the various interfaces.

•

Chapter 3, Memory (MEM)—depicts the on-chip memory, structures, registers, and

interfaces.

•

Chapter 4, System Integration Module (SIM)—documents the system control functions

module.

•

Chapter 5, External Memory Interface (EMI)—defines specifications for the IPBus based

External Memory Interface (EMI). The EMI module is used for each of the 56800E

Family chips contained in this manual.

•

Chapter 6, On-Chip Clock Synthesis (OCCS)—elaborates on the internal oscillator, Phase

Lock Loop (PLL), and timer distribution chain for the 5685x.

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