Pci Bus; Idsel Mapping; Interrupt-Routing; Onboard Resources - Advantech SOM 144 Design Specification

5.1

PCI Bus

5.1.1
AD line
AD21
AD22
AD23
5.1.2
Following interrupt routing on the backplane is recommended
for proper BIOS support:
Device Number on SOM
144 Solution
Board/Backplane
1
2
3
5.1.3
The onboard devices of your SOM 144 Module need IRQ and
DMA resources.
2 8 SOM 144 Design and Specification Rev. 1.0

IDSEL mapping

SOM 144 Backplane device # 1
SOM 144 Backplane device # 2
SOM 144 Backplane device # 3

Interrupt-Routing

IDSEL
AD21
AD22
AD23

Onboard resources

Description
Interrupt Pin on Device
INTA#
INTB#
INTC#
INTD#
INTA#
INTB#
INTC#
INTD#
INTA#
INTB#
INTC#
INTD#
Interrupt Pin on PCI-
Bridge
IRQX
IRQY
IRQZ
IRQW
IRQY
IRQZ
IRQW
IRQX
IRQZ
IRQW
IRQX
IRQY