
10
10-32
MULTIJUNCTION TIMERS
10.2 Common Units of Multijunction Timers
32176 Group User’s Manual (Rev.1.01)
TOP Interrupt Control Register 3 (TOPIR3)
<Address: H’0080 0233>
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
8,9
No function assigned. Fix to "0".
00
10
TOPIS9 (TOP9 interrupt request status bit)
0: Interrupt not requested
R(Note 1)
11
TOPIS8 (TOP8 interrupt request status bit)
1: Interrupt requested
12,13
No function assigned. Fix to "0".
00
14
TOPIM9 (TOP9 interrupt request mask bit)
0: Enable interrupt request
R
W
15
TOPIM8 (TOP8 interrupt request mask bit)
1: Mask (disable) interrupt request
Note 1: Only writing "0" is effective. Writing "1" has no effect; the bit retains the value it had before the write.
Note: TOP10 has only one interrupt source in the interrupt group, so that its status and mask registers are nonexistent in the MJT
interrupt control registers. (They are controlled directly by the Interrupt Controller.)
b10
TOPIS9
F/F
TOPIM9
F/F
b14
b11
TOPIS8
F/F
TOPIM8
F/F
b15
MJT output interrupt 6
IRQ6
(Level)
2-source inputs
TOPIR3 <H'0080 0233>
Data bus
TOP9udf
TOP8udf
Figure 10.2.7 Block Diagram of MJT Output Interrupt 6
b8
9
10
11121314
b15
TOPIS9
TOPIS8
TOPIM9
TOPIM8
000
0000
0