HD6432646 Hitachi, HD6432646 Datasheet - Page 923

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

Bit
Initial value
Read/Write
—
—
Bus Operation Interrupt Mask
7
1
0
1
Bus operation interrupt request to CPU by IRR12 enabled
Bus operation interrupt request to CPU by IRR12 disabled
Unread Interrupt Mask
—
—
0
1
6
1
Unread message overwrite interrupt request to CPU by IRR9 enabled
Unread message overwrite interrupt request to CPU by IRR9 disabled
—
—
5
1
Mailbox Empty Interrupt Mask
IMR12
0
1
R/W
4
1
Mailbox empty interrupt request to CPU by IRR8 enabled
Mailbox empty interrupt request to CPU by IRR8 disabled
—
—
3
1
—
—
2
1
IMR9
R/W
1
1
IMR8
R/W
0
1
889