Intel Pentium 4 M RH80532GC025512 User Manual

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3

 

Introduction......................................................................................................................... 9

Terminology......................................................................................................... 11

Electrical Specifications.................................................................................................... 13

System Bus and GTLREF ................................................................................... 13

Power and Ground Pins ...................................................................................... 13

Decoupling Guidelines ........................................................................................ 13
2.3.1

 

Decoupling ..................................................................................... 14

System Bus AGTL+ Decoupling............................................................. 14

System Bus Clock (BCLK[1:0]) and Processor Clocking ....................... 14

Voltage Identification and Power Sequencing..................................................... 15
2.4.1

Enhanced Intel® SpeedStep® Technology............................................ 16

Phase Lock Loop (PLL) Power and Filter............................................... 17

Signal Terminations, Unused Pins and TESTHI[10:0] ........................................ 18

System Bus Signal Groups ................................................................................. 20

Asynchronous GTL+ Signals............................................................................... 22

Test Access Port (TAP) Connection.................................................................... 22

Maximum Ratings................................................................................................ 23

Processor DC Specifications............................................................................... 23

AGTL+ System Bus Specifications ..................................................................... 34

System Bus AC Specifications ............................................................................ 35

System Bus Signal Quality Specifications........................................................................ 51

System Bus Clock (BCLK) Signal Quality Specifications and Measurement 
Guidelines ........................................................................................................... 51

System Bus Signal Quality Specifications and Measurement Guidelines........... 52

System Bus Signal Quality Specifications and Measurement Guidelines........... 55
3.3.1

Overshoot/Undershoot Guidelines ......................................................... 55

Overshoot/Undershoot Magnitude ......................................................... 55

Overshoot/Undershoot Pulse Duration................................................... 55

Activity Factor......................................................................................... 56

Reading Overshoot/Undershoot Specification Tables............................ 56

Conformance Determination to Overshoot/Undershoot Specifications .. 57

Package Mechanical Specifications .................................................................................61

Pin Listing and Signal Definitions .....................................................................................67

Alphabetical Signals Reference .......................................................................... 81

Thermal Specifications and Design Considerations......................................................... 89

Thermal Specifications ........................................................................................ 90