Intel Xeon L7455 User Manuals

Table of Contents

• 1 Introduction

  9
  • 1.1 Terminology

    11
  • 1.2 State of Data

    13
  • 1.3 References

    13
• 2 Electrical Specifications

  15
  • 2.1 Front Side Bus and GTLREF

    15
  • 2.2 Decoupling Guidelines

    16
    • 2.2.1 VCC Decoupling

      16
    • 2.2.2 VTT Decoupling

      16
    • 2.2.3 Front Side Bus AGTL+ Decoupling

      16
  • 2.3 Front Side Bus Clock (BCLK[1:0]) and Processor Clocking

    16
    • 2.3.1 Front Side Bus Frequency Select Signals (BSEL[2:0])

      17
    • 2.3.2 PLL Power Supply

      18
  • 2.4 Voltage Identification (VID)

    18
  • 2.5 Reserved, Unused, or Test Signals

    20
  • 2.6 Front Side Bus Signal Groups

    20
  • 2.7 CMOS Asynchronous and Open Drain Asynchronous Signals

    22
  • 2.8 Test Access Port (TAP) Connection

    22
  • 2.9 Mixing Processors

    23
  • 2.10 Absolute Maximum and Minimum Ratings

    23
  • 2.11 Processor DC Specifications

    24
    • 2.11.1 Flexible Motherboard Guidelines (FMB)

      24
    • 2.11.2 VCC Overshoot Specification

      33
    • 2.11.3 Die Voltage Validation

      33
    • 2.11.4 Platform Environmental Control Interface (PECI) DC Specifications

      34
  • 2.12 AGTL+ FSB Specifications

    35
  • 2.13 Front Side Bus AC Specifications

    37
  • 2.14 Processor AC Timing Waveforms

    41
• 3 Mechanical Specifications

  51
  • 3.1 Package Mechanical Drawing

    51
  • 3.2 Processor Component Keepout Zones

    54
  • 3.3 Package Loading Specifications

    60
  • 3.4 Package Handling Guidelines

    61
  • 3.5 Package Insertion Specifications

    61
  • 3.6 Processor Mass Specifications

    61
  • 3.7 Processor Materials

    61
  • 3.8 Processor Markings

    62
  • 3.9 Processor Pin-Out Coordinates

    63
• 4 Pin Listing

  65
  • 4.1 Processor Pin Assignments

    65
    • 4.1.1 Pin Listing by Pin Name

      65
    • 4.1.2 Pin Listing by Pin Number

      73
• 5 Signal Definitions

  81
  • 5.1 Signal Definitions

    81
• 6 Thermal Specifications

  89
  • 6.1 Package Thermal Specifications

    89
    • 6.1.1 Thermal Specifications

      89
    • 6.1.2 Thermal Metrology

      97
  • 6.2 Processor Thermal Features

    97
    • 6.2.1 Intel® Thermal Monitor Features

      97
    • 6.2.2 Intel Thermal Monitor

      97
    • 6.2.3 Intel Thermal Monitor 2

      98
    • 6.2.4 On-Demand Mode

      99
    • 6.2.5 PROCHOT# Signal

      100
    • 6.2.6 FORCEPR# Signal

      100
    • 6.2.7 THERMTRIP# Signal

      100
  • 6.3 Platform Environment Control Interface (PECI)

    101
    • 6.3.1 Introduction

      101
    • 6.3.2 PECI Specifications

      103
• 7 Features

  105
  • 7.1 Power-On Configuration Options

    105
  • 7.2 Clock Control and Low Power States

    105
    • 7.2.1 Normal State

      106
    • 7.2.2 HALT or Extended HALT State

      106
    • 7.2.3 Stop-Grant State

      108
    • 7.2.4 Extended HALT Snoop or HALT Snoop State, Stop Grant Snoop State

      109
  • 7.3 Enhanced Intel SpeedStep® Technology

    109
  • 7.4 System Management Bus (SMBus) Interface

    110
    • 7.4.1 SMBus Device Addressing

      111
    • 7.4.2 PIROM and Scratch EEPROM Supported SMBus Transactions

      112
    • 7.4.3 Processor Information ROM (PIROM)

      113
    • 7.4.4 Checksums

      132
    • 7.4.5 Scratch EEPROM

      132
• 8 Debug Tools Specifications

  133
  • 8.1 Debug Port System Requirements

    133
  • 8.2 Logic Analyzer Interface (LAI)

    133
    • 8.2.1 Mechanical Considerations

      133
    • 8.2.2 Electrical Considerations

      134
• 9 Boxed Processor Specifications

  135
  • 9.1 Introduction

    135
  • 9.2 Thermal Specifications

    135
    • 9.2.1 Boxed Processor Cooling Requirements

      135