S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 67
S5920Q
Manufacturer Part Number
S5920Q
Description
Manufacturer
Applied Micro Circuits Corporation
Datasheet
1.S5920Q.pdf
(165 pages)
Specifications of S5920Q
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Operating Temperature (max)
70C
Package Type
PQFP
Rad Hardened
No
Lead Free Status / Rohs Status
Not Compliant
Available stocks
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S5920 – PCI Product: PCI Configuration Registers
INTERRUPT LINE REGISTER (INTLN)
Figure 22. Interrupt Line Register
AMCC Confidential and Proprietary
Register Name:
Address Offset:
Power-up value:
Boot-load:
Attribute:
Size:
7
Interrupt Line
3Ch
FFh
External nvRAM offset 7Ch
Read/Write
8 bits
FFh
This register indicates the interrupt routing for the
S5920 controller. The ultimate value for this register is
system-architecture specific. For x86 based PCs, the
values in this register correspond with the established
interrupt numbers associated with the dual 8259 con-
trollers used in those machines. In x86-based PC
systems, the values of 0 to 15 correspond with the IRQ
numbers 0 through 15, and the values from 16 to 254
are reserved. The value of 255 (the controller’s default
power-up value) signifies either “unknown” or “no con-
nection” for the system interrupt. This register is boot-
loaded from the external boot memory or may be writ-
ten by the PCI interface.
Revision 1.02 – April 12, 2007
Data Book
DS1596
0
67
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