Overview; Features; Functional Description - Texas Instruments Concerto F28M35 Series Technical Reference Manual

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23.1 Overview

This device uses the popular CAN IP known as D_CAN.

The CAN module implements the following features:

CAN protocol version 2.0 part A, B

Bit rates up to 1 MBit/s

Multiple clock sources

32 message objects (mailboxes)

Individual identifier mask for each message object

Programmable FIFO mode for message objects

Programmable loop-back modes for self-test operation

Suspend mode for debug support

Software module reset

Automatic bus-on after bus-off state by a programmable 32-bit timer

Message-RAM parity-check mechanism

Two interrupt lines

Globsl power-down and wakeup support

The CAN module performs CAN protocol communication according to ISO 11898-1 (identical to Bosch

CAN protocol specification 2.0 A, B). The bit rate can be programmed to values up to 1 MBit/s. A CAN

transceiver chip is required for the connection to the physical layer (CAN bus).

For communication on a CAN network, individual message objects can be configured. The message

objects and identifier masks are stored in the Message RAM.

All functions concerning the handling of messages are implemented in the message handler. Those

functions are acceptance filtering, the transfer of messages between the CAN Core and the Message

RAM, and the handling of transmission requests.

The register set of the CAN can be accessed directly by the CPU via the module interface. These

registers are used to control/configure the CAN Core and the message handler, and to access the

message RAM.

SPRUH22I – April 2012 – Revised November 2019

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M3 Controller Area Network (CAN)

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