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Avila Network Computer Operating Manual
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2.2. PCI Device Mapping
The GW2342 PCI device mapping is listed below.
Bus
Number
Device
Number
Fcn
Number
IRQ
Number
Description
00
01
0
28
Mini-PCI Slot (J3)
00
02
0
27
Mini-PCI Slot (J1)
00
03
0
26
Mini-PCI Slot (J4)
00
04
0
25
Mini-PCI Slot (J2)
PCI Device Map
2.3. Interrupt Mapping
The IXP42X processor allows for 32 interrupts which originate from either internal
processor blocks or from the 14 dedicated GPIO pins. The interrupt mapping is
shown below.
Interrupt
Function
0
WAN/HSS NPE – Not Used
1
Ethernet NPE A
2
Ethernet NPE B
3
Queue Manager (1-32)
4
Queue Manager (33-64)
5
General Purpose Timer 0
6
GPIO(0)
7
GPIO(1)
8
PCI Interrupt - Not Used
9
PCI DMA Channel 1
10
PCI DMA Channel 2
11
General Purpose Timer 1
12
USB
13
Console UART
14
Timestamp Timer
15
High-Speed UART – Not Used
16
Watchdog Timer
17
Performance Monitoring Unit
18
XScale PMU
19
GPIO(2)
20
GPIO(3)
21
GPIO(4)
22
GPIO(5) - Not Used (Serial Enable)
23
GPIO(6) - Not Used (I2C Bus SCL)
24
GPIO(7) - Not Used (I2C Bus SDA)
25
GPIO(8) - Mini-PCI Slot
J2 - INTA
J4 – INTB
26
GPIO(9) - Mini-PCI Slot
J4 - INTA