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System Power Management Interface
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The System Power Management Interface (SPMI)cite-ref-1[1] is a high-speed, low-latency, bi-directional, two-wire serial bus suitable for real-time control of voltage and frequency scaled multi-core application processors and its power management of auxiliary components. SPMI obsoletes a number of legacy, custom point-to-point interfaces and provides a low pin count, high-speed control bus for up to 4 master and 16 slave devices.cite-ref-2[2] SPMI is specified by the MIPI Alliance (Mobile Industry Process Interface Alliance).

References

cite-note-11. ↑ "System Power Management Interface Overview" (PDF).
cite-note-22. ↑ "Add support for the System Power Management Interface (SPMI)".

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