HD6432646 Hitachi, HD6432646 Datasheet - Page 586
HD6432646
Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432646.pdf
(1155 pages)
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15.2.13 Interrupt Mask Register (IMR)
The interrupt mask register (IMR) is a 16-bit readable/writable register containing flags that
enable or disable requests by individual interrupt sources.
Bit 15—Overload Frame/Bus Off Recovery Interrupt Mask: Enables or disables overload
frame/bus off recovery interrupt requests.
Bit 15: IMR7
0
1
Bit 14—Bus Off Interrupt Mask: Enables or disables bus off interrupt requests caused by the
transmit error counter.
Bit 14: IMR6
0
1
Bit 13—Error Passive Interrupt Mask: Enables or disables error passive interrupt requests
caused by the transmit/receive error counter.
Bit 13: IMR5
0
1
552
Initial value:
Initial value:
IMR
R/W:
R/W:
Bit:
Bit:
IMR7
Description
Overload frame/bus off recovery interrupt request to CPU by IRR7 enabled
Overload frame/bus off recovery interrupt request to CPU by IRR7 disabled
Description
Bus off interrupt request to CPU by IRR6 enabled
Bus off interrupt request to CPU by IRR6 disabled
Description
Error passive interrupt request to CPU by IRR5 enabled
Error passive interrupt request to CPU by IRR5 disabled
R/W
15
—
—
1
7
1
IMR6
R/W
14
—
—
1
6
1
IMR5
R/W
13
—
—
1
5
1
IMR12
IMR4
R/W
R/W
12
1
4
1
IMR3
R/W
11
—
—
1
3
1
IMR2
R/W
10
—
—
1
2
1
IMR1
IMR9
R/W
R/W
9
1
1
1
(Initial value)
(Initial value)
(Initial value)
IMR8
R/W
—
—
8
0
0
1
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