46
Specification Update
AAO90.
Package C6 Exit with Memory in Self-Refresh When Using DDR3
RDIMM Memory May Lead to a System Hang
Problem:
When using DDR3 RDIMM memory and exiting from the C6 low power state with
memory in self-refresh the CS (Chip Select) signals may remain in tri-state during
tSTAB (CLK Stabilization time) thus violating the JEDEC Standard:
Definition of the
SSTE32882 Registering Clock Driver with Parity and Quad Chip Selects for DDR3
RDIMM Applications
. As detailed in the JEDEC specification the CS signals should
transition from tri-state to high to exit the Clock Stopped Power Down Mode.
Implication:
When this erratum occurs the processor may hang.
Workaround:
It is possible for the BIOS to contain a workaround for this erratum.
Status:
For the steppings affected, see the Summary Tables of Changes.
AAO91.
LBR, BTM or BTS Records May have Incorrect Branch From
Information After an EIST Transition, T-states, C1E, or Adaptive
Thermal Throttling
Problem:
The "From" address associated with the LBR (Last Branch Record), BTM (Branch Trace
Message) or BTS (Branch Trace Store) may be incorrect for the first branch after an
EIST (Enhanced Intel® SpeedStep Technology) transition, T-states, C1E (C1
Enhanced), or Adaptive Thermal Throttling.
Implication:
When the LBRs, BTM or BTS are enabled, some records may have incorrect branch
"From" addresses for the first branch after an EIST transition, T-states, C1E, or
Adaptive Thermal Throttling.
Workaround:
None identified.
Status:
For the steppings affected, see the Summary Tables of Changes.
AAO92.
PECI GetTemp() Reads May Return Invalid Temperature Data in
Package C6 State
Problem:
The PECI (Platform Environment Control Interface) GetTemp() command may
occasionally return incorrect temperature data.
Implication:
The temperature data reported over PECI should always be a negative value and
represents a delta below the onset of TCC (thermal control circuit) activation, as
indicated by PROCHOT#. The PECI GetTemp() command may occasionally return
incorrect temperature data when the processor is in the package C6 state. The error
occurrence rate and returned processor temperature values are random including both
hot and cold readings. Note that this error may cause the processor to return positive
PECI temperature values that may not necessarily be indicative of a thermal event
requiring an immediate shutdown.
Workaround:
Intel recommends discarding processor temperature values less than -100 or greater
than 0, and the use of appropriate temperature smoothing filters in the range -100 to 0
to minimize fan speed fluctuations, if any, due to these errors. Intel does not
recommend initiating system shutdown solely based on PECI readings. For systems
using the PECI temperature data to facilitate system shutdown, Intel recommends
initiating a shutdown only if a PECI value of 0 is returned over three consecutive PECI
temperature reads.
Status:
For the steppings affected, see the Summary Tables of Changes.
Содержание BV80605001914AG - Processor - 1 x Xeon X3430
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