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Power Management
Intel
®
Xeon
®
and Intel
®
Core™ Processors For Communications Infrastructure
May 2012 Datasheet - Volume 1 of 2
Document Number: 327405
-001 47
6.0 Power Management
This chapter provides information on the following power management topics:
•ACPI States
• Processor Core
• Integrated Memory Controller (IMC)
• PCI Express*
• Direct Media Interface (DMI)
Figure 6-1. Power States
G0 – Working
S0 – CPU Fully powered on
C0 – Active mode
C1 – Auto halt
C1E – Auto halt, low freq, low voltage
C3 – L1/L2 caches flush, clocks off
C6 – save core states before shutdown
C7 – similar to C6, L3 flush
G1 – Sleeping
S3 cold – Sleep – Suspend To Ram (STR)
S4 – Hibernate – Suspend To Disk (STD),
Wakeup on PCH
S5 – Soft Off – no power,
Wakeup on PCH
G3 – Mechanical Off
P0
Pn
- May 2012 1
- Legal Lines and Disclaimers 2
- Revision History 3
- Contents 4
- 1.0 Introduction 11
- 1.3 Terminology 13
- 2.0 Product Overview 15
- Processor 16
- 2.1 Product Features 17
- 2.2 Processor Details 17
- 2.3 Supported Technologies 17
- 2.4 Interface Features 17
- 2.4.2 PCI Express* 18
- 2.5 Power Management Support 21
- 2.7 Package 21
- 2.8 Testability 21
- 3.0 Interfaces 23
- 3.1.1.1 UDIMM Configurations 24
- 3.1.3.1 Single-Channel Mode 27
- Flex Memory Technology Mode 27
- Fast Memory Access 28
- 3.1.5.2 Command Overlap 29
- 3.2.1.1 Transaction Layer 31
- 3.2.1.2 Data Link Layer 31
- 3.2.1.3 Physical Layer 31
- 3.2.5 Configuring PCIe* Lanes 35
- 3.3 Direct Media Interface 36
- 3.5 Interface Clocking 37
- 4.0 Technologies 39
- 4.1.3 Intel 40
- VT-d Objectives 40
- 4.1.4 Intel 40
- VT-d Features 40
- 4.2 Intel 41
- Hyper-Threading Technology 41
- 4.3 Intel 41
- 4.4.1 PCLMULQDQ Instruction 42
- 5.0 Processor SKUs 45
- 6.0 Power Management 47
- 6.1 ACPI States Supported 48
- 6.1.4 PCIe* Link States 49
- 6.1.5 DMI States 49
- Processor Package State 50
- Core 1 State 50
- Thread 1Thread 0 50
- Core 0 State 50
- C1 C1E C7C6C3 51
- 6.2.4.1 Core C0 State 52
- 6.2.4.2 Core C1/C1E State 52
- 6.2.4.3 Core C3 State 53
- 6.2.4.4 Core C6 State 53
- 6.2.4.5 Core C7 State 53
- 6.2.4.6 C-State Auto-Demotion 53
- 6.2.5.1 Package C0 55
- 6.2.5.2 Package C1/C1E 55
- 6.2.5.3 Package C3 State 56
- 6.2.5.4 Package C6 State 56
- 6.2.5.5 Package C7 State 56
- 6.3 IMC Power Management 57
- 6.5 DMI Power Management 59
- 6.6 Thermal Power Management 59
- 6.4 PCIe* Power Management 59
- 7.0 Thermal Management 61
- Table 7-1. TDP Specifications 62
- 7.3.1.3 PROCHOT# Signal 66
- 7.3.2.1 On-Demand Mode 68
- 8.0 Signal Description 71
- 8.6 PLL Signals 76
- 8.7 TAP Signals 76
- 8.9 Power Sequencing 78
- 8.11 Sense Pins 79
- 8.12 Future Compatibility 79
- 9.0 Electrical Specifications 81
- 9.3.1 PLL Power Supply 82
- 9.5 System Agent (SA) Vcc VID 89
- 9.7 Signal Groups 90
- 9.10 DC Specifications 93
- ± 200mV and the edge must be 98
- 9.11 AC Specifications 101
- 9.11.1 DDR3 AC Specifications 103
- = 1.5 V ±0.075 V 104
- -001 105 105
- -001 107 107
- Cl ock-Cl ock# 110
- Programmable 111
- Vref + 100mV 112
- Vref – 100mV 112
- -001 113 113
- 9.14.1 V 115
- Overshoot Specification 115
- Voltage (V) 116
- -001 117 117
- -001 121 121
- -001 123 123
- -001 125 125
- -001 127 127
- -001 129 129
- -001 131 131
- -001 133 133
- -001 135 135
- -001 137 137
- -001 139 139
- -001 141 141
- -001 143 143
- -001 145 145
- -001 147 147
- -001 149 149
- 11.1 ERRSTS - Error Status 152
- 11.2 ERRCMD - Error Command 153
- 11.3 SMICMD - SMI Command 154
- 11.4 SCICMD - SCI Command 155
- 40CC-40CFh 156
- 44C8-44CBh 157
- 44CC-44CFh 158
- 5004-5007h 158
- 5008-500Bh 160
- -001 163 163
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