MIPI SDCA v1.0, which leverages the MIPI Discovery and Configuration Specification for SoundWire (MIPI DisCo Specification for SoundWire), simplifies audio software architecture and driver requirements, significantly optimizing the integration of audio devices into host platforms by enabling native OS support of SDCA-enabled MIPI SoundWire devices.
Integration of “smart” host-controllable audio devices within "open" host platforms such as laptops and tablets is typically challenging and cumbersome; different devices often lack consistency in the basic functionality they provide, how they are controlled by the host, and how they enable discovery of features. To address these challenges, MIPI SCDA defines a standard MIPI SoundWire device class for host-controllable audio devices. The specification provides a standard framework for system software and native OS drivers to determine the function of SDCA-enabled SoundWire audio devices, the properties of their control interfaces (addressing, access mode, access layer, deferred access and interrupts), and reset properties.
Utilizing MIPI SDCA within both host and peripheral audio devices enables the development and use of system firmware and generic device class drivers, rendering software reusable across multiple audio devices from multiple vendors. In conjunction with the introduction of the new MIPI specification, audio device capabilities can be seamlessly reported to the host via the framework defined in MIPI DisCo Specification for SoundWire, enabling native operating system (OS) and driver support, improved management of power consumption and enablement of advanced audio features.
Both MIPI SDCA Version 1.0 and MIPI DisCo Specification for SoundWire, which has recently been updated to Version 2.1, are available for download.
"SDCA defines a standard SoundWire device class, enabling system designers to develop generic class drivers for audio devices conforming to that class. This significantly simplifies and streamlines platform development," says Sanjiv Desai, chair of MIPI Alliance. "By standardizing essential audio device features, control and discovery mechanisms, enabling native OS support and eliminating the need for bespoke drivers and software, SDCA allows audio components from different vendors to be cost-effectively integrated to differentiate host-platform capabilities for varied use cases and customer desires."
Development of SDCA included participants from all aspects of the audio ecosystem, including OS vendors, system-on-chip (SoC) vendors, hardware and software intellectual property (IP) suppliers, and hardware vendors. MIPI Software Working Group members participating in the specification’s development include Advanced Micro Devices; Analog Devices; Cirrus Logic; Dell Technologies; Everest Semiconductor; Intel Corporation; Microsoft Corporation; onsemi; Qualcomm; Realtek Semiconductor; Texas Instruments; and others.
The MIPI Alliance (MIPI) has over 375 member companies worldwide and more than 15 active working groups delivering specifications within the extended mobile ecosystem. Members of the organization include handset manufacturers, device OEMs, software providers, semiconductor companies, application processor developers, IP tool providers, automotive OEMs and Tier 1 suppliers, and test and test equipment companies, as well as camera, tablet and laptop manufacturers.
www.mipi.org
