Intel Xeon Wolfdale E3210 P4X-UPE3210-316-6M1333 Ficha De Dados

Datasheet

221

B/D/F/Type:

0/6/0/PCI

Address Offset: 19h

Default Value:

00h

Access:

RW 

Size:

8 bits

This register identifies the bus number assigned to the second bus side of the "virtual" 

bridge. This number is programmed by the PCI configuration software to allow mapping 

of configuration cycles to PCI Express.

B/D/F/Type:

0/6/0/PCI

Address Offset: 1Ah

Default Value:

00h

Access:

RW 

Size:

8 bits

This register identifies the subordinate bus (if any) that resides at the level below PCI 

Express. This number is programmed by the PCI configuration software to allow 

mapping of configuration cycles to PCI Express.

7:0

RW

00h

Secondary Bus Number (BUSN): This field is programmed by configuration 
software with the bus number assigned to PCI Express. 

7:0

RW

00h

Subordinate Bus Number (BUSN): This register is programmed by 
configuration software with the number of the highest subordinate bus that lies 
behind the device #6 bridge. When only a single PCI device resides on the PCI 
Express segment, this register will contain the same value as the SBUSN1 
register.