HD6417750RF240V Datasheet, PDF (420/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 15 Controller Area Network (HCAN)
⎯ HCAN configuration mode
⎯ HCAN sleep mode
⎯ HCAN halt mode
• Other features
⎯ DTC can be activated by message reception mailbox (HCAN mailbox 0 only)
• Module stop mode can be set
HCAN
MBI
Message buffer
Mailboxes
Message control
Message data
MC0 to MC15, MD0 to MD15
LAFM
MPI
Microprocessor interface
CPU interface
Control register
Status register
(CDLC)
CAN
Data Link Controller
Bosch CAN 2.0B active
Tx buffer
HTxD
Rx buffer
HRxD
Figure 15.1 HCAN Block Diagram
• Message Buffer Interface (MBI)
The MBI, consisting of mailboxes and a local acceptance filter mask (LAFM), stores CAN
transmit/receive messages (identifiers, data, etc.) Transmit messages are written by the CPU.
For receive messages, the data received by the CDLC is stored automatically.
• Microprocessor Interface (MPI)
The MPI, consisting of a bus interface, control register, status register, etc., controls HCAN
internal data, status, and so forth.
• CAN Data Link Controller (CDLC)
The CDLC transmits and receives of messages conforming to the Bosch CAN Ver. 2.0B active
standard (data frames, remote frames, error frames, overload frames, inter-frame spacing), as
well as CRC checking, bus arbitration, and other functions.
Rev. 7.00 Sep. 11, 2009 Page 384 of 566
REJ09B0211-0700