Intel G2120T CM8063701391600 User Manual

62

Datasheet, Volume 1

VID[7:6]

VID[5:3]/CSC[2:0]

VID[2:0]/MSID[2:0]

VID[7:0] (Voltage ID) are used to support automatic 

selection of power supply voltages (V

CC

). Refer to the 

Voltage Regulator-Down (VRD) 11.1 Design Guidelines 

for more information. The voltage supply for these 

signals must be valid before the VR can supply V

CC

 to 

the processor. Conversely, the VR output must be 

disabled until the voltage supply for the VID signals 

become valid. The VR must supply the voltage that is 

requested by the signals, or disable itself. 

VID7 and VID6 should be tied separately to V

SS

 using a 

1 k resistor (This value is latched on the rising edge of 

VTTPWRGOOD).

CSC[2:0]—Current Sense Configuration bits, for ISENSE 

gain setting. See Voltage Regulator-Down (VRD) 11.1 

Design Guidelines for gain setting information. This 

value is latched on the rising edge of VTTPWRGOOD.

MSID[2:0] (Market Segment Identification) are used to 

indicate the maximum platform capability to the 

processor. A processor will only boot if the MSID[2:0] 

pins are strapped to the appropriate setting (or higher) 

on the platform (see 

 for MSID encodings). 

MSID is used to help protect the platform by preventing 

a higher power processor from booting in a platform 

designed for lower power processors. MSID[2:0] are 

latched on the rising edge of VTTPWRGOOD.

I/O

CMOS

VSS_SENSE

VCC_SENSE and VSS_SENSE provide an isolated, low 

impedance connection to the processor core voltage 

and ground. They can be used to sense or measure 

voltage near the silicon.

Analog

VSS_SENSE_VTT

VTT_SENSE and VSS_SENSE_VTT provide an isolated, 

low impedance connection to the processor V

TT

 voltage 

and ground. They can be used to sense or measure 

voltage near the silicon.

Analog

VTT

Processor power for the memory controller, shared cache 

and I/O (1.1 V).

PWR

VTT_SELECT

The VTT_SELECT signal is used to select the correct V

TT

 

voltage level for the processor. The processor will be 

configured to drive a low voltage level VTT_SELECT.

O

CMOS

VTT_SENSE

VTT_SENSE and VSS_SENSE_VTT provide an isolated, 

low impedance connection to the processor V

TT

 voltage 

and ground. They can be used to sense or measure 

voltage near the silicon.

Analog