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Intel® Xeon® Processor E5-2400 v2 Product Family 33
Datasheet Volume One
For the processor PECI client that is designed to meet the RS - Platform Environment
Control Interface (PECI) Specification, Rev 3.0, the Revision Number it returns will be
‘0011 0100b’.
2.5.2.3 GetTemp()
The GetTemp() command is used to retrieve the die temperature from a target PECI
address. The temperature is used by the external thermal management system to
regulate the temperature on the die. The data is returned as a negative value
representing the number of degrees Celsius below the processor DTS temperature
(T
Prochot
) at which PROCHOT_N asserts. The PECI temperature value of zero
corresponds to T
Prochot
. This also represents the minimum temperature at which the
processor Thermal Control Circuit activates. The actual value that the thermal
management system uses as a control set point (T
CONTROL
) is also defined as a
negative number below T
Prochot
. T
CONTROL
may be extracted from the processor by
issuing a PECI RdPkgConfig() command as described in Section 2.5.2.4 or using a
RDMSR instruction. T
CONTROL
application to fan speed control management is defined in
the Intel® Xeon® Processor E5-2400 v2 Product Family Thermal/Mechanical Design
Guide (TMDG).
Please refer to Section 2.5.7 for details regarding PECI temperature data
formatting.
2.5.2.3.1 Command Format
The GetTemp() format is as follows:
Write Length: 0x01
Read Length: 0x02
Command: 0x01
Description: Returns the highest die temperature for addressed processor PECI client.
5 Ping(), GetDIB(), GetTemp(), WrPkgConfig(), RdPkgConfig(), RdIAMSR(),
RdPCIConfigLocal(), WrPCIConfigLocal(), RdPCIConfig(), WrPCIConfig()
6 Ping(), GetDIB(), GetTemp(), WrPkgConfig(), RdPkgConfig(), RdIAMSR(),
RdPCIConfigLocal(), WrPCIConfigLocal(), RdPCIConfig(), WrPCIConfig(), WrIAMSR()
Table 2-2. Minor Revision Number Meaning
Minor Revision Supported Command Suite
Figure 2-8. GetTemp()
Byte #
Byte
Definition
0
Client Address
1
Write Length
0x01
2
Read Length
0x02
4
FCS
5
Temp[7:0]
6
Temp[15:8]
7
FCS
3
Cmd Code
0x01
- Product Family 1
- Table of Contents 3
- Datasheet Volume One 10
- Revision History 11
- 1 Overview 13
- 1.1.2 Supported Technologies 14
- 1.2 Interfaces 15
- 1.2.2 PCI Express* 16
- Transaction 17
- Overview 18
- 1.3 Power Management Support 19
- 1.5 Package Summary 20
- 1.6 Terminology 20
- 1.7 Related Documents 22
- 1.9 State of Data 23
- 2 Interfaces 24
- 2.2 PCI Express* Interface 25
- 2.2.1.1 Transaction Layer 26
- 2.2.1.2 Data Link Layer 26
- 2.2.1.3 Physical Layer 26
- 2.3.1 DMI2 Error Flow 27
- 2.3.3 DMI2 Link Down 27
- Interfaces 28
- 2.5.1.1 Thermal Management 30
- 2.5.2.1 Ping() 30
- 2.5.2.2 GetDIB() 31
- Reserved 32
- # of Domains 32
- Byte# 5 32
- 2.5.2.3 GetTemp() 33
- 2.5.2.4 RdPkgConfig() 34
- 2.5.2.5 WrPkgConfig() 35
- DRAM Power Limit Performance 45
- CPU ID Data 48
- CPU code patch revision 49
- Current Config Limit Data 54
- RESERVED 54
- Accumulated Energy Status 55
- Accumulated CPU Energy 55
- Accumulated CPU Throttle Time 57
- 2.5.2.7 RdIAMSR() 59
- Cores 0,1.2...7 60
- Thread (0,1) Mask for Core4 60
- 2.5.2.8 RdPCIConfig() 63
- 2.5.2.9 RdPCIConfigLocal() 64
- DeviceBus Function Register 65
- 2.5.2.10 WrPCIConfigLocal() 66
- 2.5.3.1 Power-up Sequencing 68
- 2.5.3.2 Device Discovery 69
- 2.5.3.3 Client Addressing 69
- 2.5.3.4 C-states 70
- 2.5.3.5 S-states 71
- 2.5.3.6 Processor Reset 71
- 2.5.4 Multi-Domain Commands 73
- 2.5.5.1 Abort FCS 74
- 2.5.5.2 Completion Codes 74
- 2.5.7.1 Format 75
- 3 Technologies 77
- 3.1.2 Intel® VT-x Features 78
- 3.1.3 Intel® VT-d Objectives 78
- 3.2 Security Technologies 79
- 3.2.3 AES Instructions 80
- 3.3 Intel® Secure Key 81
- 3.4 Intel® OS Guard 81
- Technologies 82
- 4 Power Management 85
- Table 4-6. Intel® QPI States 87
- 4.2.2 Low-Power Idle States 88
- Processor Package State 89
- Core N State 89
- Core 0 State 89
- 4.2.4.1 Core C0 State 90
- 4.2.4.2 Core C1/C1E State 90
- 4.2.4.3 Core C3 State 91
- 4.2.4.4 Core C6 State 91
- 4.2.4.5 Delayed Deep C-States 91
- 4.2.5.1 Package C0 93
- 4.2.5.2 Package C1/C1E 93
- 4.2.5.3 Package C2 State 94
- 4.2.5.4 Package C3 State 94
- 4.2.5.5 Package C6 State 94
- 4.2.7 Processor P 95
- Power Specifications 95
- 4.3.1 CKE Power-Down 96
- 4.3.2 Self Refresh 96
- 4.3.2.1 Self Refresh Entry 97
- 4.3.2.2 Self Refresh Exit 97
- 4.3.2.3 DLL and PLL Shutdown 97
- 5 Thermal Management 98
- 5.1.5 Thermal Metrology 107
- ) Measurement Location 108
- 5.2.1 Processor Temperature 109
- 5.2.2.2 Clock Modulation 111
- 5.2.4 PROCHOT_N Signal 112
- 5.2.5 THERMTRIP_N Signal 112
- 6 Signal Descriptions 115
- 6.5 PECI Signal 118
- 6.7 JTAG and TAP Signals 119
- Miscellaneous Signals 119
- 7 Electrical Specifications 124
- BCLK{0/1}_DN) 125
- 7.1.6.1 PLL Power Supply 126
- 7.1.9.2 Decoupling Guidelines 127
- Electrical Specifications 128
- 7.2 Signal Group Summary 132
- 7.5 Mixing Processors 136
- 7.8 DC Specifications 138
- Figure 7-3. V 142
- 7.8.2 Die Voltage Validation 143
- Time [us] 144
- Unit Figure Notes 146
- O_ABS_MAX 149
- VHavg (mV) 150
- 250 + 0.5 (VHavg - 700) 150
- 550 + 0.5 (VHavg - 700) 150
- 7.9 Signal Quality 152
- 7.9.5.3 Activity Factor 154
- 1.3335 V 0.2835 V 3 ns 5 ns 155
- 1.2600 V 0.210 V 5 ns 5 ns 155
- 8 Processor Land Listing 157
- 8.2 Listing by Land Number 175
- 9 Package Mechanical 194
- Intel® Xeon® Processor E5 195
- 9.7 Processor Materials 199
- 9.8 Processor Markings 199
- 10.1 Introduction 200
- Solution) 201
- Keepout Zones 203
- Support (URS) 212
- °C. Meeting the processor’s 213
- 10.4 Boxed Processor Contents 216
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