Intel Xeon E5540 P4X-DPE5540-253-8M586 User Manual
Product codes
P4X-DPE5540-253-8M586
Thermal Specifications
128
Intel
®
Xeon
®
Processor 5500 Series Datasheet, Volume 1
6.3.6.4
Reserved Values
Several values well out of the operational range are reserved to signal temperature
sensor errors. These are summarized in the table below:
sensor errors. These are summarized in the table below:
6.3.7
Client Management
6.3.7.1
Power-up Sequencing
The PECI client is fully reset during processor RESET# assertion. This means that any
transactions on the bus will be completely ignored, and the host will read the response
from the client as all zeroes. After processor RESET# deassertion, the Intel Xeon
processor 5500 series PECI client is operational enough to participate in timing
negotiations and respond with reasonable data. However, the client data is not
guaranteed to be fully populated until approximately 500 µS after processor RESET# is
deasserted. Until that time, data may not be ready for all commands. The client
responses to each command are as follows:
transactions on the bus will be completely ignored, and the host will read the response
from the client as all zeroes. After processor RESET# deassertion, the Intel Xeon
processor 5500 series PECI client is operational enough to participate in timing
negotiations and respond with reasonable data. However, the client data is not
guaranteed to be fully populated until approximately 500 µS after processor RESET# is
deasserted. Until that time, data may not be ready for all commands. The client
responses to each command are as follows:
In the event that the processor is tri-stated using power-on-configuration controls, the
PECI client will also be tri-stated. Processor tri-state controls are described in
PECI client will also be tri-stated. Processor tri-state controls are described in
.
Table 6-30. Error Codes and Descriptions
Error Code
Description
0x8000
General Sensor Error (GSE)
Table 6-31. PECI Client Response During Power-Up (During ‘Data Not Ready’)
Command
Response
Ping()
Fully functional
GetDIB()
Fully functional
GetTemp()
Client responds with a ‘hot’ reading, or 0x0000
PCIConfigRd()
Fully functional
PCIConfigWr()
Fully functional
MbxSend()
Fully functional
MbxGet()
Client responds with Abort FCS (if MbxSend() has been previously issued)