ADWPCIXRSKU20 Intel, ADWPCIXRSKU20 Datasheet - Page 64

• Manufacturer Part Number: ADWPCIXRSKU20
• Manufacturer: Intel

Specifications of ADWPCIXRSKU20

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Functional Architecture
3.5.3
All PCI devices contain PCI configuration space, accessed using mechanism #1 defined in the
PCI Local Bus Specification. If dual processors are used, only the processor designated as the
Boot Strap Processor (BSP) should perform PCI configuration space accesses. Precautions
must be taken to guarantee that only one processor performs system configuration.
Two Dword I/O registers in the chipset are used for the configuration space register access:
When CONFIG_ADDRESS is written to with a 32-bit value selecting the bus number, device on
the bus, and specific configuration register in the device, a subsequent read or write of
CONFIG_DATA initiates the data transfer to/from the selected configuration register. Byte
enables are valid during accesses to CONFIG_DATA; they determine whether the configuration
register is being accessed or not. Only full Dword reads and writes to CONFIG_ADDRESS are
recognized as a configuration access by the chipset. All other I/O accesses to
CONFIG_ADDRESS are treated as normal I/O transactions.
64
03F6h – 03F7h
03F8h – 03FFh
0400h – 043Fh
0461h
0480h – 048Fh
04C0h – 04CFh
04D0h – 04D1h
04D4h – 04D7h
04D8h – 04DFh
04E0h – 04FFh
051Ch
0678h – 067Ah
0778h – 077Ah
07BCh – 07Beh
0CF8h
0CF9h
0CFCh
Address(es)
CONFIG_ADDRESS (I/O address 0CF8h)
CONFIG_DATA (I/O address 0CFCh)
Accessing Configuration Space
Primary IDE – Sec Floppy
Serial Port A (primary)
DMA Controller 1, Extended Mode Registers
Extended NMI / Reset Control
DMA High Page Register
DMA Controller 2, High Base Register
Interrupt Controllers 1 and 2 Control Register
DMA Controller 2, Extended Mode Register
Reserved
DMA Channel Stop Registers
Software NMI (051Ch)
Parallel Port (ECP)
Parallel Port (ECP)
Parallel Port (ECP)
PCI CONFIG_ADDRESS Register
Intel® Server Board SE7320VP2 Turbo and Reset
Control
PCI CONFIG_DATA Register
Intel order number C91056-002
Resource
Intel® Server Board SE7320VP2
Notes
Revision 2.1