Intel G640T CM8062301002204 User Manual
Product codes
CM8062301002204
Datasheet, Volume 2
189
Processor Configuration Registers
2.12.4
DMIPVCCTL—DMI Port VC Control Register
2.12.5
DMIVC0RCAP—DMI VC0 Resource Capability Register
B/D/F/Type:
0/0/0/DMIBAR
Address Offset:
C–Dh
Reset Value:
0000h
Access:
RW, RO
Size:
16 bits
BIOS Optimal Default
000h
Bit
Attr
Reset
Value
RST/
PWR
Description
15:4
RO
0h
Reserved
3:1
RW
000b
Uncore
VC Arbitration Select (VCAS)
This field will be programmed by software to the only possible
This field will be programmed by software to the only possible
value as indicated in the VC Arbitration Capability field.
The value 000b when written to this field will indicate the VC
The value 000b when written to this field will indicate the VC
arbitration scheme is hardware fixed (in the root complex). This
field cannot be modified when more than one VC in the LPVC group
is enabled.
000 = Hardware fixed arbitration scheme (such as, Round Robin)
Others = Reserved
See the PCI express specification for more details.
000 = Hardware fixed arbitration scheme (such as, Round Robin)
Others = Reserved
See the PCI express specification for more details.
0
RO
0b
Uncore
Reserved for Load VC Arbitration Table (LVCAT)
B/D/F/Type:
0/0/0/DMIBAR
Address Offset:
10–13h
Reset Value:
0000_0001h
Access:
RO
Size:
32 bits
BIOS Optimal Default
00h
Bit
Attr
Reset
Value
RST/
PWR
Description
31:24
RO
00h
Uncore
Reserved for Port Arbitration Table Offset (PATO)
23
RO
0h
Reserved
22:16
RO
00h
Uncore
Reserved for Maximum Time Slots (MTS)
15
RO
0b
Uncore
Reject Snoop Transactions (REJSNPT)
0 = Transactions with or without the No Snoop bit set within the
0 = Transactions with or without the No Snoop bit set within the
TLP header are allowed on this VC.
1 = Any transaction for which the No Snoop attribute is applicable
but is not set within the TLP Header will be rejected as an
Unsupported Request.
14:8
RO
0h
Reserved
7:0
RO
01h
Uncore
Port Arbitration Capability (PAC)
Having only bit 0 set indicates that the only supported arbitration
Having only bit 0 set indicates that the only supported arbitration
scheme for this VC is non-configurable hardware-fixed.