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Chapter 8
Interrupt/Exception Processing Function
Preliminary User’s Manual U15839EE1V0UM00
8.4.3 Interrupt Edge Detection Control Registers
Valid interrupt edges can be selected by INTM0 to INTM3 registers. Masking of interrupts is done inside
the concerning interrupt control registers xxIC.
(1)
Interrupt mode register 0 (INTM0)
Figure 8-17:
Interrupt Mode Register 0 (IMTM0)
Note: Programming edge detection or port mode register can trigger unintended interrupt requests.
Therefore be sure to mask the respective interrupt requests.
7
6
5
4
3
2
1
0
Address
Initial
value
INTM0
ES031
ES030
ES021
ES020
ES011
ES010
ES001
ES000
FFFFF880H
00H
Bit Position
Bit Name
Function
7, 6
ES031,
ES030
Edge selection for INTP3 to interrupt controller.
Selects active edge for interrupt generation.
ES031
ES030
Edge selection
0
0
Falling
edge
0
1
Rising
edge
1
0
Reserved
1
1
Both
edges
5, 4
ES021,
ES020
Edge selection for INTP2 to interrupt controller.
ES021
ES020
Edge selection
0
0
Falling
edge
0
1
Rising
edge
1
0
Reserved
1
1
Both
edges
3, 2
ES011,
ES010
Edge selection for INTP1 to interrupt controller.
ES011
ES010
Edge selection
0
0
Falling
edge
0
1
Rising
edge
1
0
Reserved
1
1
Both
edges
1, 0
ES001,
ES000
Edge selection for INTP0 to interrupt controller.
ES001
ES000
Edge selection
0
0
Falling
edge
0
1
Rising
edge
1
0
Reserved
1
1
Both
edges
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