MIPI® SoundWire* Interface

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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

The SoundWire interface is a feature offering connection to the SoundWire devices, which include audio codecs and modem codecs. The SoundWire interface is the latest audio interface targeting (but not limited to) the phone and tablet market and the main advantage is the connection simplicity with a two wires multi-drop topology and PDM streaming capabilities. SoundWire device class initiative for audio is bringing standardization to the audio codec SW stack. These devices are enumerated based on vendor / device ID of the SoundWire device reporting, allowing vendor customization of audio codec SW if desired. SoundWire interface capabilities are listed as follows:

Up to 4 SoundWire interfaces frame rate synchronized on global periodic events
SNDW[0] supports 4 data lane per SoundWire interface
Support SoundWire Device Class Specification for Audio Controls and Memories
Up to 8 PCM bidirectional streams per SoundWire interface
- Direction is programmable as either input or output stream
Up to 8 channels per PCM streams
Interrupt / PME wake capable on DATA pin assertion in low power state

Note:PDM support exists in design but is not enabled for SNDW links.

Signal Description

Intel® Display Audio Interface Signal Description