SH7058 Datasheet, PDF (560/1130 Pages) Renesas Technology Corp – Renesas SuperHTM RISC engine

Section 16 Controller Area Network-II (HCAN-II)
16.1 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
16.1.1 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 16.8, Usage Notes carefully.
Rev. 3.0, 09/04, page 519 of 1086