Datasheet

Host-Primary PCI Express* Bridge Registers (D1:F0)
186 Datasheet
6.49 PVCCAP2—Port VC Capability Register 2
B/D/F/Type: 0/1/0/MMR
Address Offset: 108–10Bh
Default Value: 00000000h
Access: RO
Size: 32 bits
This register describes the configuration of PCI Express Virtual Channels associated
with this port.
6.50 PVCCTL—Port VC Control
B/D/F/Type: 0/1/0/MMR
Address Offset: 10C–10Dh
Default Value: 0000h
Access: RO, RW
Size: 16 bits
Bit Access
Default
Value
Description
31:24 RO 00h
VC Arbitration Table Offset (VCATO): Indicates the location of the VC
Arbitration Table. This field contains the zero-based offset of the table in
DQWords (16 bytes) from the base address of the Virtual Channel Capability
Structure. A value of 0 indicates that the table is not present (due to fixed VC
priority).
23:0 RO 0000h Reserved
Bit Access
Default
Value
Description
15:4 RO 000h Reserved
3:1 RW 000b
VC Arbitration Select (VCAS): This field will be programmed by software to
the only possible value as indicated in the VC Arbitration Capability field. Since
there is no other VC supported than the default, this field is reserved.
0 RO 0b Reserved