LM3S8938 Datasheet, PDF (394/550 Pages) List of Unclassifed Manufacturers – Microcontroller

Controller Area Network (CAN) Module
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16.1
16.2
Controller Area Network (CAN) Module
CAN
Controller Area Network Overview
Controller Area Network (CAN) is a multicast shared serial bus standard for connecting electronic
control units (ECUs). CAN was specifically designed to be robust in electromagnetically noisy
environments and can utilize a differential balanced line like RS-485 or a more robust twisted-pair
wire. Originally created for automotive purposes, it is also used in many embedded control
applications (such as industrial and medical). Bit rates up to 1 Mbps are possible at network lengths
below 40 meters. Decreased bit rates allow longer network distances (for example, 125 Kbps at
500 m).
Controller Area Network Features
The Stellaris^® CAN module supports the following features:
■ CAN protocol version 2.0 part A/B.
■ Bit rates up to 1 Mbps.
■ 32 message objects.
■ Each message object has its own identifier mask.
■ Maskable interrupt.
■ Disable Automatic Retransmission mode for Time Triggered CAN (TTCAN) applications.
■ Programmable Loopback mode for self-test operation.
■ Programmable FIFO mode.
■ Gluelessly attach to an external CAN PHY through the CAN0Tx and CAN0Rx pins.
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June 14, 2007
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