r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 126

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 6 Interrupt Controller (INTC)
6.3.3
IRQSR is a 16-bit register that indicates the states of the external interrupt input pins IRQ0 to
IRQ3 and the status of interrupt request.
Initial value:
Rev. 1.00 Sep. 21, 2007 Page 100 of 1124
REJ09B0402-0100
Bit
15 to 12
11
10
9
8
7 to 4
Note:
R/W:
Bit:
*
The initial value is 1 when the level on the corresponding IRQ pin is high, and 0 when the level on the pin is low.
IRQ Status register (IRQSR)
15
R
1
-
Bit Name

IRQ3L
IRQ2L
IRQ1L
IRQ0L

14
R
1
-
13
R
1
-
Initial
Value
All 1
*
*
*
*
All 0
12
R
1
-
IRQ3L IRQ2L IRQ1L IRQ0L
11
R
*
R/W
R
R
R
R
R
R
10
R
*
Description
Reserved
These bits are always read as 1. The write value
should always be 1.
Indicates the state of pin IRQ3.
0: State of pin IRQ3 is low
1: State of pin IRQ3 is high
Indicates the state of pin IRQ2.
0: State of pin IRQ2 is low
1: State of pin IRQ2 is high
Indicates the state of pin IRQ1.
0: State of pin IRQ1 is low
1: State of pin IRQ1 is high
Indicates the state of pin IRQ0.
0: State of pin IRQ0 is low
1: State of pin IRQ0 is high
Reserved
These bits are always read as 0. The write value
should always be 0.
R
9
*
R
8
*
R
7
0
-
R
6
0
-
R
5
0
-
R
4
0
-
IRQ3F IRQ2F IRQ1F IRQ0F
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
0