Land Listing and Signal Descriptions
Table 25.
Signal Description ( (Sheet 9 of 9))
Name
Type
Description
This input should be left as a no connect in order for the processor
VRDSEL
Input to boot. The processor will not boot on legacy platforms where this
land is connected to VSS
.
VSS are the ground pins for the processor and should be connected
to the system ground plane.
VSS
Input
VSSA
Input VSSA is the isolated ground for internal PLLs.
VSS_SENSE is an isolated low impedance connection to processor
Output core VSS. It can be used to sense or measure ground near the silicon
with little noise.
VSS_SENSE
This land is provided as a voltage regulator feedback sense point for
VSS_MB_
REGULATION
VSS. It is connected internally in the processor package to the sense
point land V27 as described in the Voltage Regulator-Down (VRD)
Output
11 Design Guide For Desktop and Transportable LGA775 Socket.
VTT
Miscellaneous voltage supply.
VTT_OUT_LEFT
The VTT_OUT_LEFT and VTT_OUT_RIGHT signals are included to
Output provide a voltage supply for some signals that require termination to
TT on the motherboard.
V
VTT_OUT_RIGHT
VTT_SEL
The VTT_SEL signal is used to select the correct VTT voltage level for
the processor.
Output
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Datasheet
INTEL [ INTEL ]
