IA82527-PLC44A-R datasheet(5/45 Pages) INNOVASIC

5 / 45 page

IA82527

04 May 2007

CAN Serial Communications Controller

As of Production Ver. 00

PRELIMINARY



 2007

EN21070504-00

www.Innovasic.com

Customer Support:

Page 5 of 45

1-888-824-4184

Introduction

The Innovasic Semiconductor IA82527 Controller Area Network (CAN) Serial Communications

Controller is a form, fit, and function replacement for the original Intel

® 82527 Serial

Communications Controller.

These devices are produced using Innovasic’s Managed IC Lifetime Extension System

(MILES™). This cloning technology, which produces replacement ICs beyond simple

emulations, ensures complete compatibility with the original device, including any

“undocumented features.” Additionally, MILES™ captures the clone design in such a way that

production of the clone can continue even as silicon technology advances.

The IA82527 Serial Communications Controller replaces the obsolete Intel

® 82527 device,

allowing users to retain existing board designs, software compilers/assemblers, and emulation

tools, thereby avoiding expensive redesign efforts.

NOTE

This data sheet contains preliminary information for the

Innovasic Semiconductor IA82527 Serial Communications

Controller. The finalized data sheet that documents all

necessary engineering information about the IA82527 will be

available when the device nears completion in Q2 2008.

1.1

General Description

Controller Area Network (CAN) protocol uses a multi-master CSMA/CR (Carrier Sense, Multiple

Access with Collision Resolution) bus to transfer message objects between network nodes.

The IA82527 supports CAN Specification 2.0 Part A and B, standard and extended message

frames, and has the capability to transmit, receive, and perform message filtering on extended

message frames.

The IA82527 can store 15 message objects of 8-byte data length. Each message object can be

configured as either transmit or receive except for the last message object, which is receive-

only. The last message object also provides a special acceptance mask designed to allow

select groups of different message identifiers to be received.

The IA82527 also provides a programmable acceptance mask that allows users to globally

mask any identifier bits of the incoming message. This global mask can be used for both

standard and extended message frames.

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