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

Signal Description

Signal Descriptions

Name Type Description
Intel High Definition Audio Signals
GPP_​R4 / HDA_​RST# / I2S2_​SCLK / DMIC_​CLK_​A_​0A O Intel HD Audio Reset: Initiator H/W reset to internal/external codecs.
GPP_​R1 / HDA_​SYNC / I2S0_​SFRM / DMIC_​CLK_​B_​1A O Intel HD Audio Sync: 48 kHz fixed rate frame sync to the codecs. Also used to encode the stream number.
GPP_​R0 / HDA_​BCLK / I2S0_​SCLK / DMIC_​CLK_​B_​0A / HDA_​PROC_​BCLK O Intel HD Audio Bit Clock: Up to 24 MHz serial data clock generated by the Intel HD Audio controller.
GPP_​R2 / HDA_​SDO / I2S0_​TXD / HDA_​PROC_​SDO O Intel HD Audio Serial Data Out: Serial TDM data output to the codecs. The serial output is double-pumped for a bit rate of up to 48 Mb/s.
GPP_​R3 / HDA_​SDI0 / I2S0_​RXD / HDA_​PROC_​SDI I Intel HD Audio Serial Data In 0: Serial TDM data input from the two codec(s). The serial input is single-pumped for a bit rate of up to 24 Mb/s. These signals contain integrated Pull-down resistors, which are enabled while the primary well is powered.
GPP_​R5 / HDA_​SDI1 / I2S2_​SFRM / DMIC_​DATA_​0A I Intel HD Audio Serial Data In 1: Serial TDM data input from the two codec(s). The serial input is single-pumped for a bit rate of up to 24 Mb/s. These signals contain integrated Pull-down resistors, which are enabled while the primary well is powered.
Intel Display Audio Interface
GPP_​R0 / HDA_​BCLK / I2S0_​SCLK / DMIC_​CLK_​B_​0A / HDA_​PROC_​BCLK O Display Audio Bit Clock: Serial data clock generated by the Intel HD Audio controller. PCH supports data rate of up to 96 Mb/s.
GPP_​R2 / HDA_​SDO / I2S0_​TXD / HDA_​PROC_​SDO O Display Audio Serial Data Out: Serial TDM data output to the codec. PCH supports data rate of up to 96 Mb/s.
GPP_​R3 / HDA_​SDI0 / I2S0_​RXD / HDA_​PROC_​SDI I Display Audio Serial Data In: Serial TDM data input from the codec. PCH supports data rate of up to 96 Mb/s.
I2S/PCM Interface
GPP_​R0 / HDA_​BCLK / I2S0_​SCLK / DMIC_​CLK_​B_​0A / HDA_​PROC_​BCLK I/O I2S/PCM serial bit clock 0:Clock used to control the timing of a transfer. Can be generated internally (Initiator mode) or taken from an external source (Target mode).
GPP_​S0 / SNDW0_​CLK / I2S1_​SCLK I/O I2S/PCM serial bit clock 1:This clock is used to control the timing of a transfer. Can be generated internally (Initiator mode) or taken from an external source (Target mode).
GPP_​R4 / HDA_​RST# / I2S2_​SCLK / DMIC_​CLK_​A_​0A I/O I2S/PCM serial bit clock 2:This clock is used to control the timing of a transfer. Can be generated internally (Initiator mode) or taken from an external source (Target mode).
GPP_​R1 / HDA_​SYNC / I2S0_​SFRM / DMIC_​CLK_​B_​1A I/O I2S/PCM serial frame indicator 0: This signal indicates the beginning and the end of a serialized data word. Can be generated internally (Initiator mode) or taken from an external source (Target mode).
GPP_​S1 / SNDW0_​DATA / I2S1_​SFRM I/O I2S/PCM serial frame indicator 1: This signal indicates the beginning and the end of a serialized data word. Can be generated internally (Initiator mode) or taken from an external source (Target mode).
GPP_​R5 / HDA_​SDI1 / I2S2_​SFRM / DMIC_​DATA_​0A I/O I2S/PCM serial frame indicator 2: This signal indicates the beginning and the end of a serialized data word. Can be generated internally (Initiator mode) or taken from an external source (Target mode).
GPP_​R2 / HDA_​SDO / I2S0_​TXD / HDA_​PROC_​SDO O I2S/PCM transmit data (serial data out)0: This signal transmits serialized data. The sample length is a function of the selected serial data sample size.
GPP_​S2 / SNDW1_​CLK / DMIC_​CLK_​A_​0 / I2S1_​TXD O I2S/PCM transmit data (serial data out)1: This signal transmits serialized data. The sample length is a function of the selected serial data sample size.
GPP_​R6 / I2S2_​TXD / DMIC_​CLK_​1A O I2S/PCM transmit data (serial data out)2: This signal transmits serialized data. The sample length is a function of the selected serial data sample size.
GPP_​R3 / HDA_​SDI0 / I2S0_​RXD / HDA_​PROC_​SDI I I2S/PCM receive data (serial data in)0: This signal receives serialized data. The sample length is a function of the selected serial data sample size.
GPP_​S3 / SNDW1_​DATA / DMIC_​DATA_​0 / I2S1_​RXD I I2S/PCM receive data (serial data in)1: This signal receives serialized data. The sample length is a function of the selected serial data sample size.
GPP_​R7 / I2S2_​RXD / DMIC_​DATA_​1A I I2S/PCM receive data (serial data in)2: This signal receives serialized data. The sample length is a function of the selected serial data sample size.
GPP_​D19 / I2S_​MCLK1_​OUT O I2S/PCM Initiator reference clock 1: This signal is the initiator reference clock that connects to an audio codec.
DMIC Interface
GPP_​S2 / SNDW1_​CLK / DMIC_​CLK_​A_​0 / I2S1_​TXD

or

GPP_​R4 / HDA_​RST# / I2S2_​SCLK / DMIC_​CLK_​A_​0A

O Digital Mic Clock A0:Serial data clock generated by the HD Audio controller. The clock output frequency is up to 4.8 MHz. May be duplicated into CLKA and CLKB for individual left / right DMIC power control.
GPP_​S6 / SNDW3_​CLK / DMIC_​CLK_​A_​1

or

GPP_​R6 / I2S2_​TXD / DMIC_​CLK_​1A

O Digital Mic Clock A1:Serial data clock generated by the HD Audio controller. The clock output frequency is up to 4.8 MHz. May be duplicated into CLKA and CLKB for individual left / right DMIC power control.
GPP_​S4 / SNDW2_​CLK / DMIC_​CLK_​B_​0

or

GPP_​R0 / HDA_​BCLK / I2S0_​SCLK / DMIC_​CLK_​B_​0A / HDA_​PROC_​BCLK

O Digital Mic Clock B0:Serial data clock generated by the HD Audio controller. The clock output frequency is up to 4.8 MHz. May be duplicated into CLKA and CLKB for individual left / right DMIC power control.
GPP_​S5 / SNDW2_​DATA / DMIC_​CLKB1 or GPP_​R1 / HDA_​SYNC / I2S0_​SFRM / DMIC_​CLK_​B_​1 O Digital Mic Clock B1:Serial data clock generated by the HD Audio controller. The clock output frequency is up to 4.8 MHz. May be duplicated into CLKA and CLKB for individual left / right DMIC power control.
GPP_​S3 / SNDW1_​DATA / DMIC_​DATA_​0 / I2S1_​RXD

or

GPP_​R5 / HDA_​SDI1 / I2S2_​SFRM / DMIC_​DATA_​0A

I Digital Mic Data:Serial data input from the digital mic.
GPP_​S7 / SNDW3_​DATA / DMIC_​DATA_​1

or

GPP_​R7 / I2S2_​RXD / DMIC_​DATA_​1A

I Digital Mic Data:Serial data input from the digital mic.
SoundWire Interface
GPP_​S0 / SNDW0_​CLK / I2S1_​SCLK I/O SoundWire Clock: Serial data clock to external peripheral devices.
GPP_​S1 / SNDW0_​DATA / I2S1_​SFRM I/O SoundWire Data: Serial data input from external peripheral devices.
GPP_​S2 / SNDW1_​CLK / DMIC_​CLK_​A_​0 / I2S1_​TXD I/O SoundWire Clock: Serial data clock to external peripheral devices.
GPP_​S3 / SNDW1_​DATA / DMIC_​DATA_​0 / I2S1_​RXD I/O SoundWire Data: Serial data input from external peripheral devices.
GPP_​S4 / SNDW2_​CLK / DMIC_​CLK_​B_​0 I/O SoundWire Clock: Serial data clock to external peripheral devices.
GPP_​S5 / SNDW2_​DATA / DMIC_​CLK_​B_​1 I/O SoundWire Data: Serial data input from external peripheral devices.
GPP_​S6 / SNDW3_​CLK / DMIC_​CLK_​A_​1 I/O SoundWire Clock: Serial data clock to external peripheral devices.
GPP_​S7 / SNDW3_​DATA / DMIC_​DATA_​1 I/O SoundWire Data: Serial data input from external peripheral devices.
SNDW_​RCOMP I/O SoundWire RCOMP:200ohm +/- 1% compensation resistor required to ground.
Misc
GPP_​B14 / SPKR / TIME_​SYNC1 / SATA_​LED# / ISH_​GP6 O Speaker Output:Used for connection to external speaker for POST sounds if not using HD_​Audio embedded option.