Intel Pentium III BX80526C800256E User Manual
Product codes
BX80526C800256E
Datasheet
5
Pentium
®
III Processor for the PGA370 Socket at 500 MHz to 1.13 GHz
Figures
1
Second Level (L2) Cache Implementation ........................................................... 8
2
AGTL+/AGTL Bus Topology in a Uniprocessor Configuration ............................ 14
3
AGTL+/AGTL Bus Topology in a Dual-Processor Configuration ........................14
4
Stop Clock State Machine ................................................................................... 15
5
Processor Vcc
CMOS
Package Routing ................................................................ 18
6
Differential Clocking Example ............................................................................. 20
7
BSEL[1:0] Example for a 100/133 MHz or 100 MHz Only System Design ......... 25
8
Slew Rate (23A Load Step)................................................................................. 33
9
Generic Clock Waveform .................................................................................... 41
10
BCLK, PICCLK, and TCK Generic Clock Waveform ........................................... 42
11
System Bus Valid Delay Timings ........................................................................ 42
12
System Bus Setup and Hold Timings.................................................................. 43
13
System Bus Reset and Configuration Timings.................................................... 43
14
Platform Power-On Sequence Timings ...............................................................44
15
Power-On Reset and Configuration Timings....................................................... 45
16
BCLK, PICCLK Generic Clock Waveform at the Processor Pins........................47
17
Low to High AGTL+ Receiver Ringback Tolerance............................................. 48
18
Maximum Acceptable AGTL+ Overshoot/Undershoot Waveform ....................... 53
19
Maximum Acceptable AGTL Overshoot/Undershoot Waveform ......................... 53
20
Non-AGTL+ (Non-AGTL) Overshoot/Undershoot, Settling Limit, and
Ringback 1 .......................................................................................................... 54
Ringback 1 .......................................................................................................... 54
21
Processor Functional Die Layout for FC-PGA..................................................... 58
22
FC-PGA and FC-PGA2 Package Types ............................................................. 60
23
Package Dimensions........................................................................................... 61
24
Package Dimensions for FC-PGA2.....................................................................63
25
FC-PGA2 Flatness Specification......................................................................... 64
26
Top Side Processor Markings for FC-PGA (up to CPUID 0x686H) .................... 65
27
Top Side Processor Markings for FC-PGA (for CPUID 0x68AH))....................... 65
28
Top Side Processor Markings for FC-PGA2 ....................................................... 66
29
Volumetric Keep-Out for FC-PGA and FC-PGA2................................................ 66
30
Component Keep-Out .........................................................................................67
31
Intel
®
Pentium
®
III Processor Pinout ................................................................... 68
32
Conceptual Boxed Intel
®
Pentium
®
III Processor for the PGA370 Socket .......... 80
33
Dimensions of Mechanical Step Feature in Heatsink Base................................. 81
34
Dimensions of Notches in Heatsink Base ........................................................... 82
35
Thermal Airspace Requirement for all Boxed Intel
®
Pentium
®
III Processor Fan
Heatsinks in the PGA370 Socket ........................................................................ 83
36
Boxed Processor Fan Heatsink Power Cable Connector Description................. 84
37
Motherboard Power Header Placement Relative to the Boxed
Intel
Intel
®
Pentium
®
III Processor .............................................................................. 84