Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
277
Datasheet Volume Two: Functional Description, February 2014
Integrated I/O (IIO) Configuration Registers
14.2.107 LNKCON3
Link Control 3 Register.
14.2.108 LNERRSTS
Lane Error Status Register
Type:
CFG
PortID:
N/A
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0x254
Bit
Attr
Default
Description
31:2
RV
-
Reserved.
1:1
RW
0x0
lnkeqreqinten:
Link Equalization Request Interrupt Enable.
When Set, this bit enables the generation of interrupt to indicate that the Link 
Equalization Request bit has been set.
0:0
RW
0x0
perfeq:
Performance Equalization.
When this register is 1b and a 1b is written to the “Link Retrain” register with 
“Target Link Speed” set to 8GTs, the Upstream component must perform 
Transmitter Equalization.
Type:
CFG
PortID:
N/A
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0x258
Bit
Attr
Default
Description
31:16 RV
-
Reserved.
15:0
RW1CS
0x0
lane:
A value of 1b in any bit indicates whether the corresponding PCIe* lane 
detected lane-based error. 
bit 0 Lane 0 Error Detected
bit 1 Lane 1 Error Detected
bit 2 Lane 2 Error Detected
bit 3 Lane 3 Error Detected
bit 4 Lane 4 Error Detected (not used when the link is bifurcated as x4)
bit 5 Lane 5 Error Detected (not used when the link is bifurcated as x4)
bit 6 Lane 6 Error Detected (not used when the link is bifurcated as x4)
bit 7 Lane 7 Error Detected (not used when the link is bifurcated as x4)
bit 8 Lane 8 Error Detected (not used when the link is bifurcated as x4 or x8)
bit 9 Lane 9 Error Detected (not used when the link is bifurcated as x4 or x8)
bit 10 Lane 10 Error Detected (not used when the link is bifurcated as x4 or x8)
bit 11 Lane 11 Error Detected (not used when the link is bifurcated as x4 or x8)
bit 12 Lane 12 Error Detected (not used when the link is bifurcated as x4 or x8)
bit 13 Lane 13 Error Detected (not used when the link is bifurcated as x4 or x8)
bit 14 Lane 14 Error Detected (not used when the link is bifurcated as x4 or x8)
bit 15 Lane 15 Error Detected (not used when the link is bifurcated as x4 or x8) 
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