Rainbow Electronics W90P710CDG User Manual
Page 382
W90P710CD/W90P710CDG
- 382 -
BITS
DESCRIPTIONS
[6:2]
Vector
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 [6:2]: Interrupt Vector
0 = no interrupt occurs
1 ~ 31 = representing the interrupt channel that is active, enabled, and
having the highest priority
[0]
Reserved
Reserved
AIC Interrupt Source Number Register (AIC_ISNR)
REGISTER ADDRESS R/W
DESCRIPTION
RESET
VALUE
AIC_ISNR
0xFFF8_2110
R
Interrupt Source Number Register
0x0000_0000
31
30
29
28
27
26
25
24
0 0 0 0 0 0 0 0
23
22
21
20
19
18
17
16
0 0 0 0 0 0 0 0
15
14
13
12
11
10
9
8
0 0 0 0 0 0 0 0
7
6
5
4
3
2
1
0
0
0 0
IRQID
BITS
DESCRIPTIONS
[31:5]
Reserved Reserved
[4:0]
IRQID
The purpose of this register is to record the interrupt channel number
that is active, enabled, and has the highest priority.
IRQID [4:0]: IRQ Identification
Stands for the interrupt channel number