h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 568

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Controller Area Network (HCAN)
Bit 1—Halt Request (MCR1): Controls halting of the HCAN module.
Bit 0—Reset Request (MCR0): Controls resetting of the HCAN module.
In order for GSR3 to change from 1 to 0 after 0 is written to MCR0, time is required before the
HCAN is internally reset. There is consequently a delay before GSR3 is cleared to 0 after MCR0
is cleared to 0.
15.2.2
The general status register (GSR) is an 8-bit readable register that indicates the status of the CAN
bus.
Bits 7 to 4—Reserved: These bits always read 0.
Rev. 5.00 Sep 22, 2005 page 542 of 1136
REJ09B0257-0500
Bit 2
MCR2
0
1
Bit 1
MCR1
0
1
Bit 0
MCR0
0
1
Initial value:
GSR
General Status Register (GSR)
Description
Transmission order determined by message identifier priority
Transmission order determined by mailbox (buffer) number priority (TXPR1 > TXPR15)
Description
HCAN normal operating mode
HCAN halt mode transition request
Description
Normal operating mode (MCR0 = 0 and GSR3 = 0)
[Setting condition]
When 0 is written after an HCAN reset
HCAN reset mode transition request
R/W:
Bit:
—
R
7
0
—
R
6
0
—
R
5
0
—
R
4
0
GSR3
R
3
1
GSR2
R
2
1
GSR1
R
1
0
(Initial value)
(Initial value)
(Initial value)
GSR0
R
0
0