Intel EP80579

Intel
®
EP80579 Integrated Processor Product Line—Contents
Intel
®
EP80579 Integrated Processor Product Line May 2010
4 Order Number: 320068-005US
5.8.4 Signals Crossing Plane Splits................................................................................ 63
6.0 System Power Delivery Guide....................................................................................................... 64
6.1 Terminology and Definitions ............................................................................................... 64
6.2 Power Supply...................................................................................................................... 65
6.3 Power Planes...................................................................................................................... 66
6.4 Power Requirements .......................................................................................................... 67
6.5 Power Delivery Guidelines.................................................................................................. 69
6.5.1 IA-32 core Power (VCC_CPU) .............................................................................. 69
6.5.2 Core Logic Voltage (V1P2) .................................................................................... 70
6.5.3 DDR2 Voltage (V1P8_DDR).................................................................................. 70
6.5.4 DDR2 Termination Voltage (DDR2_VTT).............................................................. 70
6.5.5 1.8V Voltage (V1P8) .............................................................................................. 70
6.5.6 GbE 2.5V (V2P5) ................................................................................................... 70
6.5.7 3.3V (VCC3) .......................................................................................................... 71
6.5.8 5V Voltage (VCC50) .............................................................................................. 71
6.5.9 VCCRTC Reference .............................................................................................. 71
6.5.10 Standby Voltages................................................................................................... 71
6.5.11 Auxiliary Voltages .................................................................................................. 72
6.6 Component Power Distribution Guidelines ......................................................................... 72
6.6.1 IA-32 core Power Distribution Guidelines .............................................................. 72
6.6.2 General Switching Power Supply Design Recommendations ............................... 72
6.6.3 Voltage Regulator Design Recommendations....................................................... 73
6.6.4 Power Plane Filter Requirements .......................................................................... 77
6.6.5 Analog and Bandgap Filter Layout Guidelines ...................................................... 79
6.6.6 Analog and Bandgap Filter Frequency Response ................................................. 79
6.6.7 Thermal Power Dissipation.................................................................................... 80
6.7 Decoupling Recommendations........................................................................................... 81
6.7.1 VCCVC (IA-32 core Power) Decoupling ................................................................ 81
6.7.2 VCC (1.2V Core Logic) Decoupling ....................................................................... 81
6.7.3 VCCA[2:1] (1.2V, IA-32 core PLL Power) Decoupling........................................... 81
6.7.4 VCCAPE (1.2V, PCI Express Power) Decoupling ................................................. 82
6.7.5 VCC18 (1.8V - DDR2) Decoupling ........................................................................ 82
6.7.6 VTTDDR (0.9V - DDR2_VTT) Decoupling............................................................. 82
6.7.7 V1P8_DDR (DIMM) Decoupling (CRB Power Reference) .................................... 82
6.7.8 VCC33 (3.3V) Decoupling ..................................................................................... 82
6.7.9 VCC25 (2.5V GbE Voltage) Decoupling ................................................................ 82
6.7.10 VCC50 (5.0V Reference) Decoupling.................................................................... 83
6.7.11 VCCPRTC (Battery Power) Decoupling ................................................................ 83
6.7.12 VCC50_SUS (5.0V Standby logic) Decoupling ..................................................... 83
6.7.13 VCCPSUS (3.3V Standby logic) Decoupling ......................................................... 83
6.7.14 VCCSUS25 (2.5V Standby logic) Decoupling ....................................................... 83
6.7.15 VCCSUS1 (1.2V Standby logic) Decoupling ......................................................... 83
7.0 Power Management and Reset Interface ..................................................................................... 84
7.1 Reset and Powergood Distribution ..................................................................................... 84
7.1.1 Types of Reset....................................................................................................... 84
7.1.2 Powergood Implementation ................................................................................... 84
7.1.3 Hard Reset Implementation ................................................................................... 84
7.1.4 Software Controlled Reset..................................................................................... 85