W90N745CD/W90N745CDG
BITS
[6:2]
[0]
DESCRIPTIONS
When the AIC generates the interrupt, VECTOR represents the
interrupt channel number that is active, enabled, and has the highest
priority. If the representing interrupt channel possesses a priority level
0, then the interrupt asserted is FIQ; otherwise, it is IRQ. The value of
VECTOR is copied to the register AIC_ISNR thereafter by the AIC.
This register was restored a value 0 after it was read by the interrupt
handler. This register can help indexing into a branch table to quickly
jump to the corresponding interrupt service routine.
Vector
VECTOR [6:2]: Interrupt Vector
0 = no interrupt occurs
1 ~ 31 = representing the interrupt channel that is active, enabled, and
having the highest priority
Reserved
Reserved
AIC Interrupt Source Number Register (AIC_ISNR)
REGISTER
ADDRESS
R/W
DESCRIPTION
RESET VALUE
R
0x0000_0000
AIC_ISNR 0xFFF8_2110
Interrupt Source Number Register
31
0
30
0
29
28
0
27
0
26
25
0
24
0
0
21
0
0
18
0
23
0
22
0
20
0
19
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
8
0
0
7
6
5
4
3
2
1
0
0
0
0
IRQID
BITS
DESCRIPTIONS
[31:5]
Reserved
IRQID
Reserved
The purpose of this register is to record the interrupt channel number
that is active, enabled, and has the highest priority.
[4:0]
IRQID [4:0]: IRQ Identification
Stands for the interrupt channel number
Publication Release Date: September 22, 2006
- 307 -
Revision A2
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