Intel® 945G/945GZ/945GC/ 945P/945PL Express Chipset Family ...

Direct Media Interface (DMI) RCRB
6.1 DMI RCRB Configuration Register Details
6.1.1 DMIVCECH—DMI Virtual Channel Enhanced Capability
Header
MMIO Range: DMIBAR
Address Offset: 000–003h
Default Value: 04010002h
Access: RO
Size: 32 bits
This register indicates DMI Virtual Channel capabilities.
Bit Access &
Default
31:20 RO
040h
19:16 RO
1h
15:0 RO
0002h
Description
Pointer to Next Capability: This field indicates the next item in the list.
Capability Version: This field indicates support as a version 1 capability
structure.
Capability ID: This field indicates this is the Virtual Channel capability item.
6.1.2 DMIPVCCAP1—DMI Port VC Capability Register 1
MMIO Range: DMIBAR
Address Offset: 004–007h
Default Value: 00000001h
Access: RO, R/WO
Size: 32 bits
This register describes the configuration of Virtual Channels associated with this port.
Bit Access &
Default
31:12 Reserved
11:10 RO
00b
9:8 RO
00b
7 Reserved
6:4 RO
000b
3 Reserved
2:0 R/WO
001b
Description
Port Arbitration Table Entry Size (PATS): This field indicates the size of the
port arbitration table is 4 bits (to allow up to 8 ports).
Reference Clock (RC): This field is hardwired for a clock of 10 ns.
Low Priority Extended VC Count (LPEVC): This field indicates that there are
no additional VCs of low priority with extended capabilities.
Extended VC Count: This field indicates that there is one additional VC (VC1)
that exists with extended capabilities.
162 Intel ® 82945G/82945GZ/82945GC GMCH and 82945P/82945PL MCH Datasheet