Texas Instruments SM320F2812-HT specifications Enhanced Controller Area Network eCAN Module

SM320F2812-HT

www.ti.com SGUS062A –JUNE 2009 –REVISED APRIL 2010

4.4Enhanced Controller Area Network (eCAN) Module

The CAN module has the following features:

•Fully compliant with CAN protocol, version 2.0B

•Supports data rates up to 1 Mbps

•Thirty-two mailboxes, each with the following properties:

–Configurable as receive or transmit

–Configurable with standard or extended identifier

–Has a programmable receive mask

–Supports data and remote frame

–Composed of 0 to 8 bytes of data

–Uses a 32-bit time stamp on receive and transmit message

–Protects against reception of new message

–Holds the dynamically programmable priority of transmit message

–Employs a programmable interrupt scheme with two interrupt levels

–Employs a programmable alarm on transmission or reception time-out

•Low-power mode

•Programmable wake-up on bus activity

•Automatic reply to a remote request message

•Automatic retransmission of a frame in case of loss of arbitration or error

•32-bit local network time counter synchronized by a specific message (communication in conjunction with mailbox 16)

•Self-test mode

–Operates in a loopback mode receiving its own message. A dummy acknowledge is provided, thereby eliminating the need for another node to provide the acknowledge bit.

NOTE

For a SYSCLKOUT of 150 MHz, the smallest bit rate possible is 23.4 kbps.

The 28x CAN has passed the conformance test per ISO/DIS 16845. Contact TI for further details.

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