SH7059 Datasheet, PDF (570/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

17. Controller Area Network-II (HCAN-II)
Reconfiguration of Mailboxes
Method-1 (Using Halt Mode)
HCAN is in normal mode
Method-2 (Without Using Halt Mode)
HCAN is in normal mode
Set MCR[1] (halt mode)
Set corresponding MBIMR
Yes
Is HCAN transmitter,
receiver, or bus off?
No
Generate interrupt (IRR0)
Read IRR0 and GSR4 as 1
HCAN is in halt
Change ID or MBC of
mailbox
Clear MCR1
Read corresponding
RXPR(RFPR) bit as 0
No
Change ID or MBC of
mailbox
Read corresponding
RXPR(RFPR) bit
1
Abandon received
message
Yes
0
Clear corresponding MBIMR bit
HCAN is in normal mode
HCAN is in normal mode
and ready for action
: Processing by hardware
: Setting by user
Figure 17.12 Change ID of Receive Box or Change Receive Box to Transmit Box
Rev.3.00 Mar. 12, 2008 Page 480 of 948
REJ09B0177-0300