IA82527 Datasheet, PDF (5/45 Pages) InnovASIC, Inc – Serial Communications Controller CAN Protocol

IA82527
CAN Serial Communications Controller
As of Production Ver. 00
04 May 2007
PRELIMINARY
1. 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.
Copyright  2007
©
EN21070504-00
Page 5 of 45
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