Pentium
®
III Processor for the PGA370
Socket at 500 MHz to 866 MHz
Product Features
s
s
s
s
s
s
Available in 866, 800EB, 733B, 667B,
600EB, and 533EB MHz speeds to support a
133MHz system bus ("E" denotes support
for Advanced Transfer Cache and Advanced
System Buffering; "B" denotes support for a
133 MHz system bus
See Table 1 for a summary of features for
each line item.)
Available in 850, 800, 750, 700, 650, 600E,
550E, and 500E MHz speeds for support of a
100 MHz system bus frequency (‘E’ denotes
support for Advanced Transfer Cache and
Advanced System Buffering)
Available in versions that incorporate
256 KB Advanced Transfer Cache (on-die,
full speed Level 2 (L2) cache with Error
Correcting Code (ECC))
Dual Independent Bus (DIB) architecture:
Separate dedicated external System Bus and
dedicated internal high-speed cache bus
Internet Streaming SIMD Extensions for
enhanced video, sound and 3D performance
Binary compatible with applications running
on previous members of the Intel
microprocessor line
s
s
s
s
s
s
s
s
s
s
s
Dynamic execution micro architecture
Intel Processor Serial Number
Power Management capabilities
— System Management mode
— Multiple low-power states
Optimized for 32-bit applications running on
advanced 32-bit operating systems
Flip Chip Pin Grid Array (FC-PGA) packaging
technology; FC-PGA processors deliver high
performance with improved handling protection
and socketability
Integrated high performance 16 KB instruction
and 16 KB data, nonblocking, level one cache
256 KB Integrated Full Speed level two cache
allows for low latency on read/store operations
Double Quad Word Wide(256bit) cache data
bus provides extremely high throughput on
read/store operations.
8-way cache associativity provides improved
cache hit rate on reads/store operations.
Error-correcting code for System Bus data
Enables systems which are scaleable for up to
two processors
The Pentium
®
III
processor is designed for high-performance desktops and for workstations and servers.
It is binary compatible with previous Intel Architecture processors. The Pentium
III
processor provides
great performance for applications running on advanced operating systems such as Windows* 98,
Windows NT and UNIX*. This is achieved by integrating the best attributes of Intel processors—the
dynamic execution, Dual Independent Bus architecture plus Intel MMX™ technology and Internet
Streaming SIMD Extentions—bringing a new level of performance for systems buyers. The Pentium
III
processor is scaleable to two processors in a multiprocessor system and extends the power of the
Pentium II processor with performance headroom for business media, communication and internet
capabilities. Systems based on Pentium
III
processors also include the latest features to simplify system
management and lower the cost of ownership for large and small business environments. The Pentium
III
processor offers great performance for today’s and tomorrow’s applications
FC-PGA Package
March 2000
Order Number:
245264-004
Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability
whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to
fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not
intended for use in medical, life saving, or life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for
future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The Pentium
®
III processor may contain design defects or errors known as errata which may cause the product to deviate from published
specifcations. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-
548-4725 or by visiting Intel's website at http://www.intel.com.
Copyright © Intel Corporation, 2000
*Third-party brands and names are the property of their respective owners.
Datasheet
Pentium
®
III Processor for the PGA370 Socket at 500 MHz to 866 MHz
Contents
1.0
Introduction......................................................................................................................... 7
1.1
Terminology........................................................................................................... 8
1.1.1 Package and Processor Terminology ...................................................... 8
1.1.2 Processor Naming Convention.................................................................9
Related Documents.............................................................................................10
Processor System Bus and V
REF .......................................................................................... 11
Clock Control and Low Power States..................................................................12
2.2.1 Normal State—State 1 ...........................................................................13
2.2.2 AutoHALT Powerdown State—State 2...................................................13
2.2.3 Stop-Grant State—State 3 .....................................................................13
2.2.4 HALT/Grant Snoop State—State 4 ........................................................14
2.2.5 Sleep State—State 5..............................................................................14
2.2.6 Deep Sleep State—State 6 ....................................................................14
2.2.7 Clock Control..........................................................................................15
Power and Ground Pins ......................................................................................15
2.3.1 Phase Lock Loop (PLL) Power...............................................................16
Decoupling Guidelines .......................................................................................16
2.4.1 Processor VCC
CORE
Decoupling............................................................16
2.4.2 Processor System Bus AGTL+ Decoupling............................................16
Processor System Bus Clock and Processor Clocking .......................................17
2.5.1 Mixing Processors of Differrent Frequencies .........................................17
Voltage Identification ...........................................................................................17
Processor System Bus Unused Pins...................................................................19
Processor System Bus Signal Groups ................................................................19
2.8.1 Asynchronous vs. Synchronous for System Bus Signals .......................20
2.8.2 System Bus Frequency Select Signals (BSEL[1:0]) ...............................21
Test Access Port (TAP) Connection....................................................................22
Maximum Ratings................................................................................................22
Processor DC Specifications...............................................................................23
AGTL+ System Bus Specifications .....................................................................26
System Bus AC Specifications ............................................................................26
2.13.1 I/O Buffer Model Password ....................................................................27
BCLK and PICCLK Signal Quality Specifications and Measurement
Guidelines ...........................................................................................................34
AGTL+ Signal Quality Specifications and Measurement Guidelines ..................35
AGTL+ Signal Quality Specifications and Measurement Guidelines ..................36
3.3.1 Overshoot/Undershoot Guidelines .........................................................36
3.3.2 Overshoot/Undershoot Magnitude .........................................................36
3.3.3 Overshoot/Undershoot Pulse Duration...................................................37
3.3.4 Activity Factor .........................................................................................37
3.3.5 Reading Overshoot/Undershoot Specification Tables............................38
3.3.6 Determining if a System meets the Overshoot/Undershoot
Specifications .........................................................................................39
1.2
2.0
2.1
2.2
Electrical Specifications....................................................................................................11
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
3.0
Signal Quality Specifications ............................................................................................34
3.1
3.2
3.3
Datasheet
3
Pentium
®
III Processor for the PGA370 Socket at 500 MHz to 866 MHz
3.4
Non-AGTL+ Signal Quality Specifications and Measurement Guidelines........... 41
3.4.1 Overshoot/Undershoot Guidelines ......................................................... 42
3.4.2 Ringback Specification........................................................................... 42
3.4.3 Settling Limit Guideline .......................................................................... 42
Thermal Specifications........................................................................................ 43
4.1.1 Thermal Diode........................................................................................ 44
FC-PGA Mechanical Specifications .................................................................... 46
Processor Markings ............................................................................................ 48
Processor Signal Listing...................................................................................... 48
Mechanical Specifications................................................................................... 60
6.1.1 Boxed Processor Thermal Cooling Solution Dimensions....................... 60
6.1.2 Boxed Processor Heatsink Weight......................................................... 62
6.1.3 Boxed Processor Thermal Cooling Solution Clip ................................... 62
6.1.4 Heatsink Grounding for the Boxed Processor ........................................ 63
Boxed Processor Requirements ......................................................................... 63
6.2.1 Fan Heatsink Power Supply ................................................................... 63
Thermal Specifications........................................................................................ 64
6.3.1 Boxed Processor Cooling Requirements ............................................... 64
Alphabetical Signals Reference .......................................................................... 66
Signal Summaries ............................................................................................... 73
4.0
Thermal Specifications and Design Considerations......................................................... 43
4.1
5.0
Mechanical Specifications............................................................................................... 46
5.1
5.2
5.3
6.0
Boxed Processor Specifications....................................................................................... 60
6.1
6.2
6.3
7.0
Processor Signal Description ........................................................................................... 66
7.1
7.2
4
Datasheet
Pentium
®
III Processor for the PGA370 Socket at 500 MHz to 866 MHz
List of Figures
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Second Level (L2) Cache Implementation ........................................................... 7
AGTL+ Bus Topology in a Uniprocessor Configuration ......................................12
AGTL+ Bus Topology in a Dual-Processor Configuration ...................................12
Stop Clock State Machine ...................................................................................12
Processor Vcc
CMOS
Package Routing ................................................................16
BSEL[1:0] Example for a 100/133 MHz or 100 MHz Only System Design .........21
BCLK, PICCLK, and TCK Generic Clock Waveform...........................................31
System Bus Valid Delay Timings ........................................................................31
System Bus Setup and Hold Timings..................................................................31
System Bus Reset and Configuration Timings....................................................32
Power-On Reset and Configuration Timings.......................................................32
Test Timings (TAP Connection) ..........................................................................33
Test Reset Timings .............................................................................................33
BCLK, PICCLK Generic Clock Waveform at the Processor Pins........................34
Low to High AGTL+ Receiver Ringback Tolerance.............................................35
Maximum Acceptable AGTL+ Overshoot/Undershoot Waveform .......................41
Non-AGTL+ Overshoot/Undershoot, Settling Limit, and Ringback 1 ..................41
Processor Functional Die Layout ........................................................................44
Package Dimensions...........................................................................................46
Top Side Processor Markings .............................................................................48
Intel
®
Pentium
®
III Processor Pinout ...................................................................49
Conceptual Boxed Intel
®
Pentium
®
III Processor for the PGA370 Socket ..........60
Side View of Space Requirements for the Boxed Processor ..............................61
Side View of Space Requirements for the Boxed Processor ..............................61
Dimensions of Mechanical Step Feature in Heatsink Base.................................62
Clip Keepout Requirements and Recommended EMI Ground Pad
Location for Boxed Intel
®
Pentium
®
III Processors .............................................62
Boxed Processor Fan Heatsink Power Cable Connector Description.................63
Motherboard Power Header Placement Relative to the Boxed
Intel
®
Pentium
®
III Processor ..............................................................................64
Thermal Airspace Requirement for all Boxed Intel
®
Pentium
®
III Processor
Fan Heatsinks in the PGA370 Socket .................................................................65
Datasheet
5
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