Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Processor Uncore Configuration Registers
114
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
Datasheet Volume Two: Functional Description, February 2014
13.2.2.5
SCRUBADDRESSLO
Scrub Address Low.
This register contains part of the address of the last patrol scrub request issued. When 
running memtest, the failing address is logged in this register on memtest errors. 
Software can write the next address to be scrubbed into this register. The STARTSCRUB 
bit will then trigger the specified address to be scrubbed. Patrol scrubs must be 
disabled to reliably write this register.
13.2.2.6
SCRUBADDRESSHI
Scrub Address High.
This register pair contains part of the address of the last patrol scrub request issued. 
Software can write the next address into this register. Scrubbing must be disabled to 
reliably read and write this register. The STARTSCRUB bit will then trigger the specified 
address to be scrubbed.
13.2.2.7
SCRUBCTL
This register contains the Scrub control parameters and status.
Type:
CFG
PortID: N/A
Bus:
1
Device: 15
Function:
1
Bus:
1
Device: 29
Function:
1
Offset:
0x98
Bit
Attr
Default
Description
31:31
RV
-
Reserved.
30:0
RW_V
0x0
RANKADD (rankadd):
Contains the rank address of the last scrub issued. Can be written to specify the 
next scrub address with STARTSCRUB. RESTRICTIONS: Patrol Scrubs must be 
disabled when writing to this field.
Type:
CFG
PortID: N/A
Bus:
1
Device: 15
Function:
1
Bus:
1
Device: 29
Function:
1
Offset:
0x9c
Bit
Attr
Default
Description
31:12
RV
-
Reserved.
11:10
RW_V
0x0
CHNL (chnl):
Can be written to specify the next scrub address with STARTSCRUB. This 
register is updated with channel address of the last scrub address issued. 
Restriction: Patrol Scrubs must be disabled when writing to this field.
9:8
RV
-
Reserved.
7:4
RW_V
0x0
RANK (rank):
Contains the physical rank ID of the last scrub issued. Can be written to specify 
the next scrub address with STARTSCRUB. RESTRICTION: Patrol Scrubs must 
be disabled when writing to this field.
3:0
RV
-
Reserved.
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