HD64F7047F50 Datasheet, PDF (515/766 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Method-1 (Halt Mode)
HCAN2 is in normal mode
Method-2 (On-the-frv)
HCAN2 is in normal mode
Set MCR[1] (halt mode)
Finish
current
Is HCAN2
session
transmitter, receiver,
or bus off?
Yes
No
Generate interrupt (IRR0)
Set corresponding MBIM bit
Cear
Read
RXPR
corresponding RXPR (RFPR)
bit as 0
No
Yes
Change ID or MBC of
mailbox
Read IRR0 & GSR4 as 1
HCAN2 is in halt mode
Change ID or MBC of
mailbox
Read corresponding
RXPR bit
0
1
Clear corresponding RXPR
Abandon the received MSG
Clear corresponding MBIM bit
Clear MCR1
HCAN2 is in normal mode
and ready for action
HCAN2 is in normal mode
The shadowed boxes need to be
done by S/W (host processor)
Figure 15.12 Change of Receive Box ID and Change from Receive Box to Transmit Box
15.4.6 HCAN2 Sleep Mode
The HCAN2 is provided with an HCAN2 sleep mode that places the HCAN2 module in the sleep
state in order to reduce current dissipation. Figure 15.13 shows a flowchart of HCAN2 sleep
mode.
Rev. 2.00, 09/04, page 473 of 720