IBM Intel Xeon E5606 49Y3765 User Manual
Product codes
49Y3765
Thermal Specifications
136
Intel
®
Xeon
®
Processor 5600 Series Datasheet Volume 1
7.3.1.3
Processor Interface Tuning and Diagnostics
Intel Xeon processor 5600 series Intel IBIST allows for in-field diagnostic capabilities in
Intel QuickPath Interconnect and memory controller interfaces. PECI provides a port
Intel QuickPath Interconnect and memory controller interfaces. PECI provides a port
to execute these diagnostics via its PCI Configuration read and write capabilities.
7.3.2
Client Command Suite
7.3.2.1
Ping()
Ping() is a required message for all PECI devices. This message is used to enumerate
devices or determine if a device has been removed, been powered-off, etc. A Ping()
sent to a device address always returns a non-zero Write FCS if the device at the
targeted address is able to respond.
devices or determine if a device has been removed, been powered-off, etc. A Ping()
sent to a device address always returns a non-zero Write FCS if the device at the
targeted address is able to respond.
7.3.2.1.1
Command Format
The Ping() format is as follows:
Write Length: 0
Read Length: 0
An example Ping() command to PECI device address 0x30 is shown below.
7.3.2.2
GetDIB()
The processor PECI client implementation of GetDIB() includes an 8-byte response and
provides information regarding client revision number and the number of supported
domains. All processor PECI clients support the GetDIB() command.
provides information regarding client revision number and the number of supported
domains. All processor PECI clients support the GetDIB() command.
7.3.2.2.1
Command Format
The GetDIB() format is as follows:
Write Length: 1
Read Length: 8
Command: 0xf7
Figure 7-13. Ping()
Byte #
Byte
Definition
0
Client Address
1
Write Length
0x00
2
Read Length
0x00
3
FCS
Figure 7-14. Ping() Example
Byte #
Byte
Definition
0
0x30
1
0x00
2
0x00
3
0xe1