Intel B940 Datasheet Page 156

  • Download
  • Add to my manuals
  • Print
  • Page
    / 360
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 155
Processor Configuration Registers
156 Datasheet, Volume 2
2.11 Device 1 Extended Configuration Registers
2.11.1 PVCCAP1—Port VC Capability Register 1
This register describes the configuration of PCI Express Virtual Channels associated
with this port.
Table 2-8. Device 1 Extended Configuration Register Address Map
Address
Offset
Register
Symbol
Register Name Reset Value Access
100–103h VCECH Virtual Channel Enhanced Capability Header 00010002h RW-O, RO
104–107h PVCCAP1 Port VC Capability Register 1 0000_0000h RO
108–10Bh PVCCAP2 Port VC Capability Register 2 0000_0000h RO
10C–10Dh PVCCTL Port VC Control 0000h RO, RW
110–113h VC0RCAP VC0 Resource Capability 0000_0001h RO
114–117h VC0RCTL VC0 Resource Control 8000_00FFh RO, RW
11A–11Bh VC0RSTS VC0 Resource Status 0002h RO,
204–207h PEG_TC PCI Express Completion Timeout 0000_0000h RW
B/D/F/Type: 0/1/0/MMR
Address Offset: 104–107h
Reset Value: 0000_0000h
Access: RO
Bit Attr
Reset
Value
Description
31:12 RO 00000h Reserved
11:10 RO 00b Reserved: Reserved for Port Arbitration Table Entry Size
9:8 RO 00b Reserved: Reserved for Reference Clock
7RO 0bReserved
6:4 RO 000b
Low Priority Extended VC Count (LPEVCC)
This field indicates the number of (extended) Virtual Channels in addition to
the default VC belonging to the low-priority VC (LPVC) group that has the
lowest priority with respect to other VC resources in a strict-priority VC
Arbitration. The value of 0 in this field implies strict VC arbitration.
3RO 0bReserved
2:0 RO 000b
Extended VC Count (EVCC)
This field indicates the number of (extended) Virtual Channels in addition to
the default VC supported by the device.
Page view 155
1 2 ... 151 152 153 154 155 156 157 158 159 160 161 ... 359 360

Comments to this Manuals

No comments