I/O Signal Planes and States

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Revision History
Introduction
PCH Controller Device IDs
- Revision IDs
- Device IDs
Memory Mapping
- Functional Description
- Memory Map
Audio Voice and Speech
Ballout Definition
Connectivity Integrated (CNVi)
Controller Link
Direct Enhanced Serial Peripheral Interface (Direct eSPI)
Direct Media Interface (DMI)
Enhanced Serial Peripheral Interface (eSPI)
Gigabit Ethernet Controller
Host System Management Bus (SMBus) Controller
Integrated Sensor Hub (ISH)
Intel® Serial I/O Improved Inter-Integrated Circuit (I3C) Controllers
Intel® Serial I/O Inter-Integrated Circuit (I2C) Controllers
Intel® Serial I/O Universal Asynchronous Receiver/Transmitter (UART) Controllers
Intel® Serial IO Generic SPI (GSPI) Controllers
PCI Express* (PCIe*)
Real Time Clock (RTC)
- Signal Description
- I/O Signal Planes and States
Serial ATA (SATA)
Serial Peripheral Interface (SPI)
System Clocks
- Integrated Clock Controller (ICC)
  - Signal Descriptions
- I/O Signal Pin States
System Management Interface and SMLink
Touch Host Controller (THC)
Universal Serial Bus (USB)
General Purpose Input and Output
- Functional Description
- Signal Description
GPIO Serial Expander
Private Configuration Space Port ID
Security Firmware Engines
- Intel® Converged Security and Management Engine (Intel® CSME)
- Intel® Silicon Security Engine
System Management
- Theory of Operation
  - TCO Modes
Testability and Monitoring
- Signal Description
- I/O Signal Planes and States
Miscellaneous Signals
Processor Sideband Signals
- Signal Description
- I/O Signal Planes and States
Power Delivery
- Power and Ground Signals
Power Management
Thermal Sensor
Electrical Characteristics

Signal Name	Power Plane	During Reset²	Immediately After Reset²	S4/S5
High Definition Audio Interface
HDA_RST#	Primary	Asserted	Asserted	Asserted
HDA_SYNC	Primary	Internal Pull-down	Driven Low	Internal Pull-down
HDA_BCLK	Primary	Driven Low	Driven Low	Driven Low
HDA_SDO	Primary	Internal Pull-down	Driven Low	Internal Pull-down
HDA_SDI[1:0]	Primary	Internal Pull-down	Internal Pull-down	Internal Pull-down
I²S/PCM Interface
I2S[2:0]_SCLK	Primary	Internal Pull-down	Internal Pull-down	Internal Pull-down
I2S[2:0]_SFRM	Primary	Internal Pull-down	Internal Pull-down	Internal Pull-down
I2S[2:0]_TXD	Primary	Driven Low	Driven Low	Driven Low
I2S[2:0]_RXD	Primary	Internal Pull-down	Internal Pull-down	Internal Pull-down
I2S_MCLK	Primary	Driven Low	Driven Low	Driven Low
Display Audio Interface
HDAPROC_BCLK	Primary	Driven Low	Driven Low	Internal Pull-down
HDAPROC_SDO	Primary	Internal Pull-down	Driven Low	Internal Pull-down
HDAPROC_SDI	Primary	Internal Pull-down	Internal Pull-down	Driven Low
DMIC Interface
DMIC_CLK_A[1:0]	Primary	Driven Low	Driven Low	Driven Low
DMIC_CLK_B[1:0]	Primary	Driven Low	Driven Low	Driven Low
DMIC_DATA[1:0]	Primary	Internal Pull-down	Internal Pull-down	Internal Pull-down
SoundWire Interface
SNDW0_DATA[3:0]	Primary	Internal Pull-down	Internal Pull-down	Internal Pull-down
SNDW[3:1]_DATA	Primary	Internal Pull-down	Internal Pull-down	Internal Pull-down
SNDW[3:0]_CLK	Primary	Driven Low	Driven Low	Driven Low
Notes: Pull-down is enabled with PLTRST# is asserted for the following signals: HDA_SYNC, HDA_SDO, HDAPROC_SDO

Ballout Definition

Integrated Pull-Ups and Pull-Downs Ballout Definition