Datasheet

Datasheet 79
Land Listing and Signal Descriptions
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VSS_SENSE Output
VSS_SENSE is an isolated low impedance connection to processor
core V
SS
. It can be used to sense or measure ground near the
silicon with little noise.
VSS_MB_
REGULATION
Output
This land is provided as a voltage regulator feedback sense point for
V
SS
. It is connected internally in the processor package to the sense
point land V27 as described in the Voltage Regulator-Down (VRD)
10.1 Design Guide for Desktop Socket 775.
VTT Miscellaneous voltage supply.
VTT_OUT_LEFT
VTT_OUT_RIGHT
Output
The VTT_OUT_LEFT and VTT_OUT_RIGHT signals are included to
provide a voltage supply for some signals that require termination
to V
TT
on the motherboard.
VTT_SEL Output
The VTT_SEL signal is used to select the correct V
TT
voltage level for
the processor.
VTTPWRGD Input
The processor requires this input to determine that the V
TT
voltages
are stable and within specification.
Table 25. Signal Description (Sheet 1 of 9)
Name Type Description