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Intel® Xeon® Processor E5-2400 v2 Product Family 152
Datasheet Volume One
7.9 Signal Quality
Data transfer requires the clean reception of data signals and clock signals. Ringing
below receiver thresholds, non-monotonic signal edges, and excessive voltage swings
will adversely affect system timings. Ringback and signal non-monotonicity cannot be
tolerated since these phenomena may inadvertently advance receiver state machines.
Excessive signal swings (overshoot and undershoot) are detrimental to silicon gate
oxide integrity, and can cause device failure if absolute voltage limits are exceeded.
Overshoot and undershoot can also cause timing degradation due to the build up of
inter-symbol interference (ISI) effects.
For these reasons, it is crucial that the designer work towards a solution that provides
acceptable signal quality across all systematic variations encountered in volume
manufacturing.
This section documents signal quality metrics used to derive topology and routing
guidelines through simulation. All specifications are specified at the processor die (pad
measurements).
Specifications for signal quality are for measurements at the processor core only and
are only observable through simulation. Therefore, proper simulation is the only way to
verify proper timing and signal quality.
Figure 7-10. BCLK{0/1} Single Ended Clock Measurement Points for Absolute Cross Point
and Swing
Figure 7-11. BCLK{0/1} Single Ended Clock Measurement Points for Delta Cross Point
V
CROSS MAX
= 550mV
V
CROSS MIN
= 250mV
BCLK_DN
BCLK_DP
V
MIN
= -0.30V
V
MAX
= 1.40V
V
CROSS DELTA
= 140 mV
BCLK_DN
BCLK_DP
- 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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