Processor Configuration Registers
2.6.50
LSTS2—Link Status 2 Register
B/D/F/Type:
Address Offset:
Reset Value:
Access:
0/1/0–2/PCI
D2–D3h
0000h
RO-V, RW1C
16 bits
000h
Size:
BIOS Optimal Default
Reset
Value
RST/
PWR
Bit
Access
Description
15:6
RO
0h
Reserved (RSVD)
Link Equalization Request (LNKEQREQ)
This bit is set by hardware to request the Link equalization
process to be performed on the Link. Refer to PCIe Specification,
Sections 4.2.3 and 4.2.6.4.2 for details.
5
4
RW1C
RO-V
0b
Uncore
Uncore
The Reset Value of this bit is 0b.
Equalization Phase 3 Successful (EQPH3SUCC)
When set to 1b, this bit indicates that Phase 3 of the Transmitter
Equalization procedure has successfully completed. Details of the
Transmitter Equalization process and when this bit needs to be
set to 1b is provided in PCIe Specification, Section 4.2.6.4.2.
0b
0b
0b
0b
The Reset Value of this bit is 0b.
Equalization Phase 2 Successful (EQPH2SUCC)
When set to 1b, this bit indicates that Phase 2 of the Transmitter
Equalization procedure has successfully completed. Details of the
Transmitter Equalization process and when this bit needs to be
set to 1b is provided in PCIe specification Section 4.2.6.4.2.
3
2
1
RO-V
RO-V
RO-V
Uncore
Uncore
Uncore
The Reset Value of this bit is 0b.
Equalization Phase 1 Successful (EQPH1SUCC)
When set to 1b, this bit indicates that Phase 1 of the Transmitter
Equalization procedure has successfully completed. Details of the
Transmitter Equalization process and when this bit needs to be
set to 1b is provided in PCIe specification Section 4.2.6.4.2.
The Reset Value of this bit is 0b.
Equalization Complete (EQCOMPLETE)
When set to 1b, this bit indicates that the Transmitter
Equalization procedure has completed. Details of the Transmitter
Equalization process and when this bit needs to be set to 1b is
provided in PCIe specification Section 4.2.6.4.2.
The Reset Value of this bit is 0b.
Current De-emphasis Level (CURDELVL)
When the Link is operating at 5 GT/s speed, this reflects the level
of de-emphasis.
1 = -3.5 dB
0
RO-V
0b
Uncore
0 = -6 dB
When the Link is operating at 2.5 GT/s speed, this bit is 0b.
Datasheet, Volume 2
131
INTEL [ INTEL ]
