HD64F2168 Datasheet, PDF (117/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

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 ExIRQ2.
• ISCR16H
Bit Bit Name Initial Value R/W
7
IRQ15SCB 0
R/W
6
IRQ15SCA 0
R/W
5
IRQ14SCB 0
R/W
4
IRQ14SCA 0
R/W
3
IRQ13SCB 0
R/W
2
IRQ13SCA 0
R/W
1
IRQ12SCB 0
R/W
0
IRQ12SCA 0
R/W
Description
IRQn Sense Control B
IRQn Sense Control A
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)
• ISCR16L
Bit Bit Name Initial Value R/W
7
IRQ11SCB 0
R/W
6
IRQ11SCA 0
R/W
5
IRQ10SCB 0
R/W
4
IRQ10SCA 0
R/W
3
IRQ9SCB 0
R/W
2
IRQ9SCA 0
R/W
1
IRQ8SCB 0
R/W
0
IRQ8SCA 0
R/W
Description
IRQn Sense Control B
IRQn Sense Control A
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 = 11 to 8)
Rev. 3.00, 03/04, page 77 of 830