h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 499

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

14.4.4
The reception procedure after initial settings is described below. A reception flowchart is shown in
Figure 14.11.
Message Reception
Initialization
Receive data setting
Local acceptance filter settings
Mailbox (RAM) initialization
Message control read
Arbitration field setting
Message data read
Message reception
(Match of identifier
Same RXPR = 1?
Interrupt settings
End of reception
Interrupt to CPU
MBCR setting
Data frame?
in mailbox?)
Clear IRR1
BCR setting
IMR1 = 1?
Clear IRR0
IRR1 = 1
RXPR
Yes
Yes
No
No
Figure 14.11 Reception Flowchart
Yes
No
Transmission of data frame corresponding
Yes
No
Section 14 Controller Area Network (HCAN)
Message control read
IRR2 = 1, IRR1 = 1
Message data read
Rev. 2.00 Dec. 05, 2005 Page 461 of 724
RXPR, RFPR = 1
Clear IRR2, IRR1
Unread message
Interrupt to CPU
to remote frame
: Settings by user
: Processing by hardware
IMR2 = 1?
No
REJ09B0200-0200
Yes