Intel® Processor and Intel® Core™ i3 N-Series

Datasheet, Volume 1 of 2

ID 759603
Date 01/04/2023
Version 001
Document Table of Contents

Power and Ground Signals

This section describes the power rails.

Power Rail Descriptions

Name

Description

VCC_​VNNEXT_​1P05

Used for FIVR PRIM_​CORE bypass mode during S0ix and Sx: 1.05 V

VCC_​V1P05EXT_​1P05

Used for FIVR PCH IO bypass mode during S0ix and Sx: 1.05 V

VCCA_​CLKLDO_​1P8

Analog supply for internal clocks: 1.8 V

VCCPRIM1P05_​OUT_​PCH

1.05 V Primary Well: for CNVi and other internal I/O blocks.

VCCDSW_​1P05

Deep Sx Well: 1.05 V. This rail is generated by on die DSW low dropout (LDO) linear regulator to supply DSW core logic.

VCCPRIM_​1P8

1.8 V Primary Well.

VCCPRIM_​3P3

3.3 V Primary Well.

VCCPGPPR

Audio Power 3.3 V or 1.8 V. If powered at 3.3 V, the 3.3 V supply can come from VCCPRIM_​3P3 supply. If powered at 1.8 V, the 1.8 V supply can come from VCCPRIM_​1P8 supply.

VCCRTC

RTC Well Supply. This rail can drop to 2.0 V if all other planes are off. This power is not expected to be shut off unless the RTC battery is removed or drained.

Notes:
  1. VCCRTC nominal voltage is 3.0 V. This rail is intended to always come up first and always stay on. It should NOT be power cycled regularly on non-coin battery designs.
  2. Implementation should not attempt to clear CMOS by using a jumper to pull VCCRTC low. Clearing CMOS can be done by using a jumper on RTCRST# or GPI.

VCCDPHY_​1P24

1.24 V for CNVi logic. This rail is generated internally with a LDO and needs to be routed to the motherboard so that the rail can be supplied back to the processor.

VCCLDOSTD_​0P85

This rail is generated internally and needs to be routed out to the motherboard for decoupling purpose.

VCC1P05_​OUT_​FET

FIVR output rail: 1.05 V, used for CPU rails VCCST/STG.

VSS

Ground

VCCCORE

Processor IA Cores and Ring power rail

VCCGT

Processor Graphics power rail

VCCANA

Support internal Analog Rails, TCSS, Display, PCIE and other internal Blocks.

VCCIN_​AUX

Support internal FIVR’s, SA, PCIe, Display IO and other internal Blocks.

VCCIN_​AUX_​FLTR

Support internal FIVR’s, SA, PCIe, Display IO and other internal Blocks.

this pin should be connected to decoupling for filter.

VCC1P05_​PROC

Sustain and Sustain Gated Power Rail

VDD2

System Memory power rail

VCCGT_​SENSE

Isolated, low impedance voltage sense pins. They can be used to sense or measure voltage near the silicon.

VCC_​SENSE

VCCANA_​SENSE

VCCINAUX_​SENSE

VCC_​MIPILP Note:When MIPI DSI interface is been used, VCC_​MIPILP should be connected to 1.26V (on board VR).

Processor Ground Rails Signals 

Signal Name

Description

Dir.

Buffer Type

Link

Type

VSSGT_​SENSE

Isolated, low impedance Ground sense pins. They can be used for the reference ground near the silicon.

N/A

GND_​

SENSE

VSS_​SENSE

VSSANA_​SENSE

VSSINAUX_​SENSE