HD6432646 Hitachi, HD6432646 Datasheet - Page 570

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Bit 1—Halt Request (MCR1): Controls halting of the HCAN module.
Bit 1: MCR1
0
1
Bit 0—Reset Request (MCR0): Controls resetting of the HCAN module.
Bit 0: MCR0
0
1
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.
536
Initial value:
GSR
General Status Register (GSR)
R/W:
Bit:
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
—
7
0
R
—
6
0
R
—
5
0
R
—
4
0
R
GSR3
3
1
R
GSR2
2
1
R
GSR1
1
0
R
(Initial value)
(Initial value)
GSR0
0
0
R