HD6432646 Hitachi, HD6432646 Datasheet - Page 581

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

15.2.11 Interrupt Register (IRR)
The interrupt register (IRR) is a 16-bit readable/writable register containing status flags for the
various interrupt sources.
Note: * Only a write of 1 is permitted, to clear the flag.
Bit 15—Overload Frame Interrupt Flag: Status flag indicating that the HCAN has transmitted
an overload frame.
Bit 15: IRR7
0
1
Bit 14—Bus Off Interrupt Flag: Status flag indicating the bus off state caused by the transmit
error counter.
Bit 14: IRR6
0
1
Initial value:
Initial value:
IRR
R/W:
R/W:
Bit:
Bit:
R/(W)*
IRR7
Description
[Clearing condition]
Writing 1
Overload frame transmission
[Setting conditions]
When overload frame is transmitted
Description
[Clearing condition]
Writing 1
Bus off state caused by transmit error
[Setting condition]
When TEC
15
—
—
0
7
0
R/(W)*
IRR6
14
—
—
0
6
0
256
R/(W)*
IRR5
13
—
—
0
5
0
R/(W)*
R/(W)*
IRR12
IRR4
12
0
4
0
R/(W)*
IRR3
11
—
—
0
3
0
IRR2
10
—
—
0
R
2
0
IRR1
IRR9
9
0
R
1
0
R
(Initial value)
(Initial value)
R/(W)*
R/(W)*
IRR0
IRR8
8
1
0
0
547