h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 606

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Controller Area Network (HCAN)
Rev. 5.00 Sep 22, 2005 page 580 of 1136
REJ09B0257-0500
Initialization (after hardware reset only)
Message transmission method setting
GSR2 = 0 (during transmission only)
Message transmission wait
Transmission completed?
Arbitration field setting
Message transmission
Transmit data setting
Mailbox initialization
Control field setting
End of transmission
Interrupt settings
Data field setting
Interrupt to CPU
MBCR setting
IRR0 clearing
TXPR setting
Clear TXACK
BCR setting
TXACK = 1
Clear IRR8
IMR8 = 1?
IRR8 = 1
Bus idle?
Yes
No
Yes
Figure 15.7 Transmission Flowchart
No
No
Yes
: Settings by user
: Processing by hardware