CIM Reference Guide

CIM_LogicalElement 61
CIM_IRQ
The CIM_IRQ class described in Table 3-35 contains IRQ information. An IRQ is a signal that data
is about to be sent to or received by a peripheral device. The signal travels by an IRQ line to the
microprocessor. Each peripheral connection must be assigned an IRQ number. For example, the
first serial port in your computer (COM1) is assigned to IRQ4 by default.
Table 3-35. CIM_IRQ Properties
Class Name: CIM_IRQ
Parent Class: CIM_SystemResource
Property Description Data Type
CSCreationClassName See Table 1-2, "Common Properties of Classes." string
CSName See Table 1-2, "Common Properties of Classes." string
CreationClassName See Table 1-2, "Common Properties of Classes." string
IRQNumber Identifies the interrupt request number. uint32
Availability Indicates the availability of the IRQ. Values for the
Availability property are as follows:
1 Other
2 Unknown
3 Available
4 In use/not available
5 In use and available
uint16
TriggerLevel Indicates whether the interrupt is triggered by the
hardware signal going high or low. Values for the
TriggerLevel property are as follows:
1 Other
2 Unknown
3 Active low
4 Active high
uint16
CIM_ ManagedSystemElement
CIM_LogicalElement
CIM_SystemResource
CIM_IRQ