Intel 520J - Pentium 4 2.80GHz 800MHz 1MB Socket 775 CPU - Page 4

4 Datasheet
Contents
5.2.3 On-Demand Mode .................................................................................................81
5.2.4 PROCHOT# Signal................................................................................................82
5.2.5 THERMTRIP# Signal.............................................................................................82
5.2.6 T
CONTROL
and Fan Speed Reduction....................................................................82
5.2.7 Thermal Diode .......................................................................................................83
6 Features ........................................................................................................................................85
6.1 Power-On Configuration Options........................................................................................85
6.2 Clock Control and Low Power States .................................................................................85
6.2.1 Normal State..........................................................................................................86
6.2.2 HALT and Enhanced HALT Powerdown States ....................................................86
6.2.3 Stop-Grant State....................................................................................................87
6.2.4 Enhanced HALT Snoop or HALT Snoop State, Grant Snoop State......................88
7 Boxed Processor Specifications....................................................................................................89
7.1 Mechanical Specifications ..................................................................................................90
7.1.1 Boxed Processor Cooling Solution Dimensions ....................................................90
7.1.2 Boxed Processor Fan Heatsink Weight.................................................................91
7.1.3 Boxed Processor Retention Mechanism and Heatsink
Attach Clip Assembly.............................................................................................91
7.2 Electrical Requirements......................................................................................................91
7.2.1 Fan Heatsink Power Supply ..................................................................................91
7.3 Thermal Specifications .......................................................................................................93
7.3.1 Boxed Processor Cooling Requirements...............................................................93
7.3.2 Variable Speed Fan...............................................................................................95