User Manual

Mobile Intel

Pentium

4 Processor-M Datasheet 3
Contents
1. Introduction.........................................................................................................................9
1.1 Terminology.........................................................................................................11
1.2 References..........................................................................................................11
2. Electrical Specifications....................................................................................................13
2.1 System Bus and GTLREF...................................................................................13
2.2 Power and Ground Pins ......................................................................................13
2.3 Decoupling Guidelines ........................................................................................13
2.3.1 VCC Decoupling.....................................................................................14
2.3.2 System Bus AGTL+ Decoupling.............................................................14
2.3.3 System Bus Clock (BCLK[1:0]) and Processor Clocking .......................14
2.4 Voltage Identification and Power Sequencing.....................................................15
2.4.1 Enhanced Intel® SpeedStep® Technology............................................16
2.4.2 Phase Lock Loop (PLL) Power and Filter...............................................17
2.4.3 Catastrophic Thermal Protection............................................................18
2.5 Signal Terminations, Unused Pins and TESTHI[10:0] ........................................18
2.6 System Bus Signal Groups .................................................................................20
2.7 Asynchronous GTL+ Signals...............................................................................22
2.8 Test Access Port (TAP) Connection....................................................................22
2.9 System Bus Frequency Select Signals (BSEL[1:0])............................................22
2.10 Maximum Ratings................................................................................................23
2.11 Processor DC Specifications...............................................................................23
2.12 AGTL+ System Bus Specifications .....................................................................34
2.13 System Bus AC Specifications............................................................................35
2.14 Processor AC Timing Waveforms .......................................................................40
3. System Bus Signal Quality Specifications........................................................................51
3.1 System Bus Clock (BCLK) Signal Quality Specifications and Measurement
Guidelines ...........................................................................................................51
3.2 System Bus Signal Quality Specifications and Measurement Guidelines...........52
3.3 System Bus Signal Quality Specifications and Measurement Guidelines...........55
3.3.1 Overshoot/Undershoot Guidelines .........................................................55
3.3.2 Overshoot/Undershoot Magnitude .........................................................55
3.3.3 Overshoot/Undershoot Pulse Duration...................................................55
3.3.4 Activity Factor.........................................................................................56
3.3.5 Reading Overshoot/Undershoot Specification Tables............................56
3.3.6 Conformance Determination to Overshoot/Undershoot Specifications..57
4. Package Mechanical Specifications.................................................................................61
4.1 Processor Pin-Out...............................................................................................64
5. Pin Listing and Signal Definitions.....................................................................................67
5.1 Mobile Intel Pentium 4 Processor-M Pin Assignments........................................67
5.2 Alphabetical Signals Reference ..........................................................................81
6. Thermal Specifications and Design Considerations.........................................................89
6.1 Thermal Specifications........................................................................................90