EP80579 Datasheet, PDF (1569/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
39.0
39.1
39.2
Controller Area Network - CAN
Overview
Controller Area Network (CAN) is a serial bus system used in a broad range of
embedded and automation control systems. The CAN usually links two or more
microcontroller-based physical devices (nodes).
CAN protocol is based on a broadcast communication mechanism. This broadcast
communication is achieved by using a message-oriented transmission protocol. In this
protocol, node-addresses are not defined, only messages are defined. These messages
are identified by a message identifier. The message identifier has to be unique within
the network and it defines not only the content, but also the priority of the message.
A high degree of system and configuration flexibility is achieved as a result of the
content-oriented addressing scheme.This content-oriented addressing scheme allows
for a high degree of system and configuration flexibility. It is easy to add stations to an
existing CAN network without making any hardware or software modifications to the
existing stations, as long as the new stations are purely receivers. This allows for
modularization of the components and also permits multiple reception and the
synchronization of distributed processes: data needed as information by several
stations can be transmitted via the network in such a way that it is unnecessary for
each station to know who the producer of the data is. This allows easy servicing and
upgrading of networks, as data transmission is not based on the availability of specific
types of stations.
Feature List
Key features are listed below:
• Conforms to ISO 11898-1(high-speed CAN).
• Full CAN 2.0B compliance.
— Supports CAN 2.0A.
• Supports 11-bit identifier and 29-bit identifier.
• Bit rates up to 1Mbps.
• 16 receive buffers:
— Each buffer has its own message filter.
— Message filter covers: ID, IDE, RTR, Data Byte (1 and 2).
— Message buffers can be linked together to build a larger message array.
— Automatic RTR response handler.
• Transmit path:
— 8 transmit message holding registers with programmable priority arbitration.
— Message abort command.
• Test and debugging support:
August 2009
Order Number: 320066-003US
Intel^® EP80579 Integrated Processor Product Line Datasheet
1569