HD6432621 Hitachi, HD6432621 Datasheet - Page 585

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

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 (IMR7): Enables or disables
overload frame/bus off recovery interrupt requests.
Bit 15: IMR7
0
1
Bit 14—Bus Off Interrupt Mask (IMR6): Enables or disables bus off interrupt requests caused
by the transmit error counter.
Bit 14: IMR6
0
1
Bit 13—Error Passive Interrupt Mask (IMR5): Enables or disables error passive interrupt
requests caused by the transmit/receive error counter.
Bit 13: IMR5
0
1
Initial value:
Initial value:
IMR
R/W:
R/W:
Bit:
Bit:
IMR7
Description
Overload frame/bus off recovery interrupt request (OVR0) to CPU by IRR7
enabled
Overload frame/bus off recovery interrupt request (OVR0) to CPU by IRR7
disabled
Description
Bus off interrupt request (ERS0) to CPU by IRR6 enabled
Bus off interrupt request (ERS0) to CPU by IRR6 disabled
Description
Error passive interrupt request (ERS0) to CPU by IRR5 enabled
Error passive interrupt request (ERS0) to CPU by IRR5 disabled
R/W
15
—
1
7
1
R
IMR6
R/W
14
—
1
6
1
R
IMR5
R/W
13
—
1
5
1
R
IMR12
IMR4
R/W
R/W
12
1
4
1
IMR3
R/W
11
—
1
3
1
R
IMR2
R/W
10
—
1
2
1
R
IMR1
IMR9
R/W
R/W
9
1
1
1
(Initial value)
(Initial value)
(Initial value)
IMR8
R/W
—
8
0
R
0
1
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