Intel Celeron Processor in the 478-Pin Package at 1.80 GHz Datasheet

Datasheet 3
Intel
®
Celeron
®
Processor in the 478-Pin Package
Contents
1.0 Introduction.........................................................................................................................9
1.1 Terminology...........................................................................................................9
1.1.1 Processor Packaging Terminology.........................................................10
1.2 References..........................................................................................................11
2.0 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
2.3.4 Phase Lock Loop (PLL) Power and Filter...............................................16
2.4 Reserved, Unused, and TESTHI Pins.................................................................18
2.5 System Bus Signal Groups .................................................................................19
2.6 Asynchronous GTL+ Signals...............................................................................20
2.7 Test Access Port (TAP) Connection....................................................................20
2.8 System Bus Frequency Select Signals (BSEL[1:0])............................................20
2.9 Maximum Ratings................................................................................................21
2.10 Processor DC Specifications...............................................................................21
2.10.1 Flexible Motherboard Guidelines (FMB).................................................22
2.11 AGTL+ System Bus Specifications .....................................................................27
2.12 System Bus AC Specifications............................................................................28
2.13 Processor AC Timing Waveforms .......................................................................32
3.0 System Bus Signal Quality Specifications........................................................................39
3.1 BCLK Signal Quality Specifications and Measurement Guidelines.....................39
3.2 System Bus Signal Quality Specifications and Measurement Guidelines...........40
3.2.1 Overshoot/Undershoot Guidelines .........................................................43
3.2.1.1 Overshoot/Undershoot Magnitude ............................................43
3.2.1.2 Overshoot/Undershoot Pulse Duration......................................43
3.2.1.3 Activity Factor............................................................................44
3.2.1.4 Reading Overshoot/Undershoot Specification Tables...............44
3.2.1.5 Determining if a System Meets the Over/Undershoot
Specifications ............................................................................45
4.0 Package Mechanical Specifications.................................................................................49
4.1 Package Load Specifications ..............................................................................52
4.2 Processor Insertion Specifications ......................................................................53
4.3 Processor Mass Specifications ...........................................................................53
4.4 Processor Materials.............................................................................................53
4.5 Processor Markings.............................................................................................53
4.6 Processor Pin-Out Coordinates...........................................................................54
5.0 Pin Listing and Signal Definitions.....................................................................................57
5.1 Intel
®
Celeron
®
Processor in the 478-Pin Package Pin Assignments.................57
5.2 Signal Descriptions..............................................................................................72