Datasheet

Section 5 Interrupt Controller
Rev. 3.00 Mar 21, 2006 page 95 of 788
REJ09B0300-0300
5.3.4 IRQ Sense Control Registers (ISCRH, ISCRL)
The ISCR registers select the source that generates an interrupt request at pins IRQ7 to IRQ0.
• ISCRH
Bit Bit Name Initial Value R/W Description
7
6
IRQ7SCB
IRQ7SCA
0
0
R/W
R/W
5
4
IRQ6SCB
IRQ6SCA
0
0
R/W
R/W
3
2
IRQ5SCB
IRQ5SCA
0
0
R/W
R/W
1
0
IRQ4SCB
IRQ4SCA
0
0
R/W
R/W
IRQn Sense Control B
IRQn Sense Control A
00: Interrupt request generated at low level of
IRQn input
01: Interrupt request generated at falling edge
of IRQn input
10: Interrupt request generated at rising edge
of IRQn input
11: Interrupt request generated at both falling
and rising edges of IRQn input
(n = 7 to 4)
• ISCRL
Bit Bit Name Initial Value R/W Description
7
6
IRQ3SCB
IRQ3SCA
0
0
R/W
R/W
5
4
IRQ2SCB
IRQ2SCA
0
0
R/W
R/W
3
2
IRQ1SCB
IRQ1SCA
0
0
R/W
R/W
1
0
IRQ0SCB
IRQ0SCA
0
0
R/W
R/W
IRQn Sense Control B
IRQn Sense Control A
00: Interrupt request generated at low level of
IRQn input
01: Interrupt request generated at falling edge
of IRQn input
10: Interrupt request generated at rising edge
of IRQn input
11: Interrupt request generated at both falling
and rising edges of IRQn input
(n = 3 to 0)