430 datasheet(74/100 Pages) INTEL

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Land Listing and Signal Descriptions

Datasheet

VRDSEL

Input

This input should be left as a no connect in order for the processor

to boot. The processor will not boot on legacy platforms where this

land is connected to VSS.

VSS

Input

VSS are the ground pins for the processor and should be connected

to the system ground plane.

VSSA

Input

VSSA is the isolated ground for internal PLLs.

VSS_SENSE

Output

VSS_SENSE is an isolated low impedance connection to processor

core VSS. 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

VSS. It is connected internally in the processor package to the sense

point land V27 as described in the Voltage Regulator-Down (VRD)

11 Design Guide For Desktop and Transportable LGA775 Socket.

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

VTT on the motherboard.

VTT_SEL

Output

The VTT_SEL signal is used to select the correct VTT voltage level for

the processor.

Table 25.

Signal Description ( (Sheet 9 of 9))

Name

Type

Description

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