h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 446

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Controller Area Network (HCAN)
CPU Interrupt Source Settings: The CPU interrupt source is set by the interrupt mask register
(IMR) and mailbox interrupt mask register (MBIMR). Transmission acknowledge and
Rev. 3.00 Oct 04, 2005 page 406 of 598
REJ09B0155-0300
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
End of transmission
Control field setting
Interrupt settings
Data field setting
Interrupt to CPU
MBCR setting
Clear TXACK
TXPR setting
BCR setting
Figure 15.9 Transmission Flowchart
Clear IRR0
TXACK = 1
Clear IRR8
IMR8 = 1?
Bus idle?
IRR8 = 1
Yes
Yes
No
Yes
No
No
: Settings by user
: Processing by hardware