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Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families
Datasheet Volume One
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
Section 7.3, “Power-On Configuration (POC) Options”
.
2.5.3.2
Device Discovery
The PECI client is available on all processors. The presence of a PECI enabled processor
in a CPU socket can be confirmed by using the Ping() command described in
Section 2.5.2.1
. Positive identification of the PECI revision number can be achieved by
issuing the GetDIB() command. The revision number acts as a reference to the PECI
specification document applicable to the processor client definition. Please refer to
Section 2.5.2.2
for details on GetDIB response formatting.
2.5.3.3
Client Addressing
The PECI client assumes a default address of 0x30. The PECI client address for the
processor is configured through the settings of the SOCKET_ID[1:0] signals. Each
processor socket in the system requires that the two SOCKET_ID signals be configured
to a different PECI addresses. Strapping the SOCKET_ID[1:0] pins results in the client
addresses shown in
Table 2-17
. These package strap(s) are evaluated at the assertion
of PWRGOOD (as depicted in
Figure 2-49
). Refer to the
appropriate Platform Design
Guide (PDG) for recommended resistor values for establishing non-default SOCKET_ID
settings.
RdPCIConfigLocal()
Client responds with a timeout completion
code of 0x81
Fully functional
WrPCIConfigLocal()
Client responds with a timeout completion
code of 0x81
Fully functional
RdPCIConfig()
Client responds with a timeout completion
code of 0x81
Fully functional
Table 2-16. PECI Client Response During Power-Up (Sheet 2 of 2)
Command
Response During
‘Data Not Ready’
Response During
‘Available Except Core Services’
Figure 2-49. The Processor PECI Power-up Timeline()
PWRGOOD
RESET_N
Core execution
idle
running
Reset uCode
Boot BIOS
PECI Client
Status
Data Not Ready
Available except core
services
SOCKET_ID[1:0]
X
SOCKET ID Valid
In Reset
Fully Operational
In Reset
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