Mobile Intel Pentium 4 Processor - M and Intel 845MP/MZ Chipset Platform Design Guide

Mobile Intel
®
Pentium
®
4 Processor-M and Intel
®
845MP/845MZ Chipset Platform
206 Design Guide
R
12.17. Interrupt Interface
Table 102. Interrupt Interface Recommendation
Checklist Items Recommendations Reason/Impact
PIRQ[D:A]# These signals require a pull-up resistor.
Recommend a 2.7 KΩ pull-up resistor to
VCCV
CC
5 or 8.2 KΩ to V
CC
CC3_.3.
In Non-APIC Mode the PIRQx# signals
can be routed to interrupts 3, 4, 5, 6, 7, 9,
10, 11, 12, 14 or 15 as described in the
Interrupt Steering section. Each PIRQx#
line has a separate Route Control
Register.
PIRQ[H:E]#/GPIO[5
:2]
These signals require a pull-up resistor.
Recommend a 2.7 KΩ pull-up resistor to
VCCV
CC
5 or 8.2 KΩ to V
CC
CC3_.3.
In Non-APIC Mode the PIRQx# signals
can be routed to interrupts 3, 4, 5, 6, 7, 9,
10, 11, 12, 14 or 15 as described in the
Interrupt Steering section. Each PIRQx#
line has a separate Route Control
Register.
SERIRQ External weak (8.2 KΩ) pull-up resistor to
V
CC
CC3_.3 is recommended.
Open drain signal