Intel Pentium III User Manual

7-4 Intel
®
Pentium
®
III Processor with 512KB L2 Cache Dual Processor Platform Design Guide
further from the socket, so larger heatsink clips may be needed. Please refer to the Intel
®
Pentium
®
III
Processor with 512KB L2 Cache Datasheet for more detailed information about the FC-PGA2
mechanical design.
7.4 Pinout Changes
The Intel
®
Pentium
®
III Processor with 512KB L2 Cache uses the same PGA370 socket that AGTL+ only
processors use. No changes to this socket should be needed to create an Intel
®
Pentium
®
III Processor
with 512KB L2 Cache platform.
However, several of the pin definitions for the Intel
®
Pentium
®
III Processor with 512KB L2 Cache have
changed from their AGTL+ only processor definitions. A summary of these changes are provided in
Table 7- 1. The platform must implement the pinout changes shown below to be compatible with the
Intel
®
Pentium
®
III Processor with 512KB L2 Cache.
Figure 7-3. Package Comparisons
Table 7-1. Pin Differences List
Pin
Intel
®
Pentium
®
III
Processor with 512KB L2
Cache
Platform
AGTL+ Only Processor
Platform
AL1 RSVD VSS
AF36 DETECT GND
AG1 VTT EDGCTRL
AM2 KEY RSVD
AN3 DYN_OE VSS
AJ3 RESET#2 VSS
X4 VSS RESET2#
AK4 VTT_PWRGD VSS
AK22 V
CMOSREF
VREF7
Y33 BCLK#/CLKREF
1
CLKREF
N37 NCHCTRL RSVD
X34 VTT VCC
CORE
AK36 VID25MV VSS
AD36 VTT VCC
1.5
AB36 VTT VCC
CMOS
FC-PGA2
FC-PGA
49.5mm square
3.5mm
49.5mm square
1.9mm
3.2mm
370 Pins
370 Pins
3.2mm
FC-PGA2
FC-PGA
49.5mm square
3.5mm
49.5mm square
1.9mm
3.2mm
370 Pins
370 Pins
3.2mm

Intel Pentium III Specifications

General

Brand	Intel
Model	Pentium III
Category	Computer Hardware
Language	English