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Technical Brief:

 

An Introduction to the MIPI SWI3S™ Audio Interface

 

Adopted in 2025, MIPI SoundWire I3S (MIPI SWI3S™) v1.0 is an evolutionary standardized audio interface that improves upon legacy and current generations of MIPI-defined audio interfaces.

This technical brief offers a detailed overview of the specification, which incorporates features requested by the market such as low-latency, multi-drop, and higher transport bandwidth up to 76 MSymbol/s. It provides multiple PHY options, including reduced EMI/EMC two-wire differential low-voltage signaling with embedded clock, suitable for a broad range of use cases across mobile, consumer and automotive platforms.

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