Compatibility; Sm_Vcc; 603-Pin Socket Pin Definition Changes - Intel Xeon Manuallines

Intel® Xeon™ Processor with 512 KB L2 Cache System Compatibility Guidelines
3.0

Compatibility

Implementing the changes outlined in this document will help assure that an Intel®
Xeon™ processor-based system design will be compatible with the Intel Xeon processor
with 512 KB L2 cache. Compatibility is likely to be ultimately limited by the ability of the
system to supply the required current and to adequately cool the processor.
4.0

SM_VCC

SM_VCC must be connected to the system 3.3 volt power supply since the Intel® Xeon™
processor with 512 KB L2 cache drives the voltage identification (VID) outputs using core
circuitry powered by the SM_VCC supply.
Refer to
requirements of SM_VCC
5.0

603-Pin Socket Pin Definition Changes

The Intel® Xeon™ processor with 512 KB L2 cache is mechanically and electrically
compatible with the same 603-pin socket used for the Intel Xeon processor. However, in
order to support the increased frequencies offered by the Intel Xeon processor with 512
KB L2 cache, "Reserved" and "N.C." pins from the original Intel Xeon processor pin
definition have been designated as either V
platforms need to redefine the 603-pin socket pin map as listed in the "New Name"
column of
cache.
6
Section 6.0 for further considerations involving the power sequencing
Table 1 to allow compatibility with the Intel Xeon processor with 512 KB L2
Table 1. 603-Pin Socket Pin-Map Change
Pin Old Name
A30 RSVD
A31 RSVD
B4 RSVD
B30 RSVD
B31 RSVD
C1 RSVD
C30 RSVD
C31 RSVD
D1 RSVD
D30 RSVD
or V . Intel Xeon processor-based
CC SS
New Name Comment
V Processor Power
CC
V Processor Ground
SS
V Processor Power
CC
V Processor Ground
SS
V Processor Power
CC
V Processor Ground
SS
V Processor Power
CC
V Processor Ground
SS
V Processor Power
CC
V Processor Ground
SS