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

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
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
4
and Fan Speed Reduction.................................................................... 82
Datasheet