Irq Sense Control Registers (Iscrh, Iscrl) - Renesas H8S/2111B Hardware Manual

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
7 IRQ7SCB
6 IRQ7SCA
5 IRQ6SCB
4 IRQ6SCA
3 IRQ5SCB
2 IRQ5SCA
1 IRQ4SCB
0 IRQ4SCA
• ISCRL
Bit Bit Name
7 IRQ3SCB
6 IRQ3SCA
5 IRQ2SCB
4 IRQ2SCA
3 IRQ1SCB
2 IRQ1SCA
1 IRQ0SCB
0 IRQ0SCA
Rev. 1.00, 05/04, page 72 of 544
Initial
Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
Initial
Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
Description
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)
Description
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)