R5F61525 RENESAS [Renesas Technology Corp], R5F61525 Datasheet - Page 488

• Manufacturer Part Number: R5F61525
• Description: 32-Bit CISC Microcomputer H8SX Family H8SX/1500 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 13 Controller Area Network (HCAN)
• Support for various modes
• Other features
• Module stop mode can be set
• Message Buffer Interface (MBI)
• Microprocessor Interface (MPI)
• CAN Data Link Controller (CDLC)
Rev. 3.00 Mar. 14, 2006 Page 450 of 804
REJ09B0104-0300
 Hardware reset
 Software reset
 Normal status (error-active, error-passive)
 Bus off status
 HCAN configuration mode
 HCAN sleep mode
 HCAN halt mode
 DMAC can be activated by message reception mailbox (HCAN mailbox 0 only)
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.
The MPI, consisting of a bus interface, control register, status register, etc., controls HCAN
internal data, status, and so forth.
The CDLC, conforming to the Bosch CAN Ver. 2.0B active standard, performs transmission
and reception of messages (data frames, remote frames, error frames, overload frames, inter-
frame spacing), as well as CRC checking, bus arbitration, and other functions.
MPI
Microprocessor interface
Message control, message data,
MC0 to MC15, MD0 to MD15
CPU interface
Control register
Status register
Mailboxes
MBI
Message buffer
HCAN
Figure 13.1 HCAN Block Diagram
LAFM
Bosch CAN 2.0B active
Data Link Controller
(CDLC)
CAN
Tx buffer
Rx buffer
HTxD
HRxD