Datasheet

Section 5 Interrupt Controller
Rev. 3.00 Sep. 28, 2009 Page 93 of 910
REJ09B0350-0300
5.3.4 IRQ Sense Control Registers (ISCR16H, ISCR16L, ISCRH, ISCRL)
The ISCR registers select the source that generates an interrupt request at pins IRQ15 to IRQ0 or
pins ExIRQ15 to ExIRQ6.
• ISCR16H
Bit Bit Name Initial Value R/W Description
7
6
IRQ15SCB
IRQ15SCA
0
0
R/W
R/W
5
4
IRQ14SCB
IRQ14SCA
0
0
R/W
R/W
3
2
IRQ13SCB
IRQ13SCA
0
0
R/W
R/W
1
0
IRQ12SCB
IRQ12SCA
0
0
R/W
R/W
IRQn Sense Control B
IRQn Sense Control A
BA
00: Interrupt request generated at low level of IRQn
or ExIRQn input
01: Interrupt request generated at falling edge of
IRQn or ExIRQn input
10: Interrupt request generated at rising edge of
IRQn or ExIRQn input
11: Interrupt request generated at both falling and
rising edges of IRQn or ExIRQn input
(n = 15 to 12)
Note: The IRQn or ExIRQn pin is selected by IRQ
sense port select register 16 (ISSR16).