Hcan Halt Mode; Figure 15.14 Hcan Halt Mode Flowchart - Renesas H8S Series Hardware Manual

Section 15 Controller Area Network (HCAN)
15.4.6

HCAN Halt Mode

The HCAN halt mode is provided to enable mailbox settings to be changed without performing an
HCAN hardware or software reset. Figure 15.14 shows a flowchart of the HCAN halt mode.
CAN bus communication possible
HCAN halt mode is entered by setting the halt request bit (MCR1) to 1 in the master control
register (MCR). If the CAN bus is operating, the transition to HCAN halt mode is delayed until
the bus becomes idle.
HCAN halt mode is cleared by clearing MCR1 to 0.
Rev. 6.00 Mar 15, 2006 page 430 of 570
REJ09B0211-0600
MCR1 = 1
Bus idle?
Yes
MBCR setting
MCR1 = 0

Figure 15.14 HCAN Halt Mode Flowchart

No
: Settings by user
: Processing by hardware