R5F61525 RENESAS [Renesas Technology Corp], R5F61525 Datasheet - Page 528

• 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)
13.4.3
Messages are transmitted using mailboxes 1 to 15. The transmission procedure after initial settings
is described below, and a transmission flowchart is shown in figure 13.9.
Rev. 3.00 Mar. 14, 2006 Page 490 of 804
REJ09B0104-0300
Message Transmission
Initialization (after hardware reset only)
Message transmission method setting
GSR2 = 0 (during transmission only)
Message transmission wait
Transmission completed?
Message transmission
Arbitration field setting
Transmit data setting
Mailbox initialization
End of transmission
Control field setting
Interrupt settings
Data field setting
Interrupt to CPU
MBCR setting
Clear TXACK
TXPR setting
BCR setting
Clear IRR0
TXACK = 1
Clear IRR8
IMR8 = 1?
Figure 13.9 Transmission Flowchart
Bus idle?
IRR8 = 1
Yes
Yes
No
Yes
No
No
: Settings by user
: Processing by hardware