QG5000XSL9TH Datasheet, PDF (392/458 Pages) Intel Corporation – Intel 5000X Chipset Memory Controller Hub (MCH)

Functional Description
Table 5-31. Intel 5000X chipset Error List (Sheet 5 of 7)
ERR #
in MCH
Error Name
M5
Aliased
Uncorrectable
Non-Mirrored
Demand Data
ECC Error
Definition
The MCH determined that a
normally “correctable” error
could be an aliased (x8
only) full device failure plus
an additional single bit
error.
Error
Type
Rec
Log Register
FERR_NF_FBD
NERR_NF_FBD
RECMEM
REDMEM
UERRCNT
M6
Aliased
In mirrored mode, the MCH
Rec
FERR_NF_FBD
Uncorrectable determined that a normally
NERR_NF_FBD
Mirrored
“correctable” error could be
RECMEM
Demand Data an aliased (x8 only) full
REDMEM
ECC Error
device failure plus an
UERRCNT
additional single bit error.
M7
Aliased
During a Sparing copy read
Rec
FERR_NF_FBD
Uncorrectable from the failing DIMM the
NERR_NF_FBD
Spare-Copy
MCH determined that a
RECMEM
Data ECC Error normally “correctable” error
REDMEM
could be an aliased (x8
UERRCNT
only) full device failure plus
an additional single bit
error.
M8
Aliased
During a Patrol Scrub, the
Rec
FERR_NF_FBD
Uncorrectable MCH determined that a
NERR_NF_FBD
Patrol Data
normally “correctable” error
RECMEM
ECC Error
could be an aliased (x8
REDMEM
only) full device failure plus
UERRCNT
an additional single bit
error.
M9
Non-Aliased
The MCH detected
Uncorrectable uncorrectable data with
Non-Mirrored good CRC.
Demand Data
ECC Error
Rec
FERR_NF_FBD
NERR_NF_FBD
RECMEM
UERRCNT
Cause / Actions
Re-read once.
If ECC is uncorrectable with
good CRC after re-read, then
poison the data in memory
and to the requestor.
If correctable after re-read,
then correct the data in
memory and to the
requestor.
First redundant read to
branch X fails.
MCH performs a fast reset on
both branches X and Y.
If both branches pass, then
replay on branch Y.
If branch X fails the disable
branch X and replay on
branch Y.
If both branches fail or
branch Y fails disable branch
X and poison data. Under
these conditions we get an
M1 error.
Second redundant read to
branch X fails with an
uncorrectable error.
Perform fast reset and
disable branch X and replay
on branch Y.
Re-read once.
If ECC is uncorrectable with
good CRC after re-read, then
poison the data in the spare
DIMM or the off-line branch.
If correctable after re-read,
then correct the data in the
spare DIMM or the off-line
branch.
The patrol read is dropped.
Re-read once.
If ECC is uncorrectable with
good CRC after re-read, then
poison the data in memory
and to the requestor.
If correctable after re-read,
then correct the data in
memory and to the
requestor.
Does not include poisoned
northbound data.
392
Intel^® 5000X Chipset Memory Controller Hub (MCH) Datasheet