Compaq GS160 - Manual (Page 5)

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Contents
Preface ........................................................................................................................xi
Chapter 1 Introduction
1.1 AlphaServer GS160/320 and GS80 Systems......................................... 1-2
1.2 Firmware and Utilities Overview ......................................................... 1-4
1.3 System Architecture.............................................................................. 1-5
Chapter 2 GS160/320 System Overview
2.1 System Characteristics ......................................................................... 2-2
2.2 System Box Architecture....................................................................... 2-4
2.3 Quad Building Block (QBB) Components ............................................. 2-6
2.3.1 Backplane.............................................................................................. 2-8
2.3.2 CPU Module ........................................................................................ 2-10
2.3.3 Memory Module .................................................................................. 2-11
2.3.4 Directory Module................................................................................. 2-12
2.3.5 Power Modules .................................................................................... 2-13
2.3.6 Power System Manager Module.......................................................... 2-14
2.3.7 Clock Splitter Module ......................................................................... 2-15
2.3.8 I/O Riser Module ................................................................................. 2-16
2.3.9 Global Port Module ............................................................................. 2-17
2.3.10 Distribution Board........................................................................ 2-18
2.3.11 Hierarchical Switch ...................................................................... 2-20
2.4 Power System...................................................................................... 2-22
2.4.1 AC Input Box....................................................................................... 2-24
2.5 PCI I/O ................................................................................................ 2-26
2.6 Control Panel ...................................................................................... 2-28
2.6.1 Control Panel LEDs ............................................................................ 2-30