Datasheet

TMS320C28346, TMS320C28345, TMS320C28344

TMS320C28343, TMS320C28342, TMS320C28341

SPRS516D –MARCH 2009–REVISED AUGUST 2012

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4.9 Enhanced Controller Area Network (eCAN) Modules (eCAN-A and eCAN-B)

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 300 MHz, the smallest bit rate possible is 11.719 kbps.

For a SYSCLKOUT of 200 MHz, the smallest bit rate possible is 7.8125 kbps.

The CAN has passed the conformance test per ISO/DIS 16845. Contact TI for test report and exceptions.

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Product Folder Link(s): TMS320C28346, TMS320C28345, TMS320C28344 TMS320C28343, TMS320C28342,

TMS320C28341