SH7059 Datasheet, PDF (511/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

17. Controller Area Network-II (HCAN-II)
Section 17 Controller Area Network-II (HCAN-II)
17.1 Overview
The controller area network-II (HCAN-II) is a module that controls the controller area network (CAN) for realtime
communication in the car and industrial device systems, etc. It serves to facilitate the hardware/software interface so that
engineers involved in the CAN implementation can ensure the design is successful.
The CAN data link controller function is not described in this document. The following CAN-specification documents
should be referred to. The interfaces from the CAN controller are described, in so far as they pertain to the connection with
the user interface.
References:
1. CAN License Specification, Robert Bosch GmbH, 1992
2. CAN Specification Version 2.0, Robert Bosch GmbH, 1991
3. Implementation Guide for the CAN Protocol, CAN Specification 2.0 Addendum, CAN In Automation, Erlangen,
Germany
4. OSEK Communication Specification, Version 2.1 revision 1, OSEK /VDX, 17^th June 1998
17.1.1 Features
• Supports CAN specification 2.0A/2.0B and ISO-11898-1
• 31 programmable mailboxes for transmission/reception and one receive-only mailbox (there is a limitation for usage
only in mailbox 31)
• Sleep mode for low power consumption and automatic recovery from sleep mode by detecting CAN bus activity
• Programmable receive filter mask (standard and extended IDs) supported by all mailboxes
• Programmable CAN data rate up to 500 kbits/s (or 1 Mbit/s with a limitation)
• Transmit message queuing with an on-chip priority sorting mechanism against the problem of priority inversion for
realtime applications
• Flexible interrupt structure
• Read section 17.8, Usage Notes carefully.
Rev.3.00 Mar. 12, 2008 Page 421 of 948
REJ09B0177-0300