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CS5920 Datasheet(PDF) 62 Page - Applied Micro Circuits Corporation

Part # CS5920
Description  Full 132 Mbytes/sec Transfer Rate
PDF  160 Pages
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Manufacturer  AMCC [Applied Micro Circuits Corporation]
Direct Link  http://www.amcc.com
Logo AMCC - Applied Micro Circuits Corporation

CS5920 Datasheet(HTML) 62 Page - Applied Micro Circuits Corporation

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S5920 – PCI Product
Revision 1.01 – November 28, 2005
AMCC Confidential and Proprietary
DS1596
62
Data Book
INTERRUPT LINE REGISTER (INTLN)
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.
Figure 22. Interrupt Line Register
Register Name:
Interrupt Line
Address Offset:
3Ch
Power-up value:
FFh
Boot-load:
External nvRAM offset 7Ch
Attribute:
Read/Write
Size:
8 bits
FFh
0
7



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