The System Power Management Interface (SPMI) is a high-speed, low-
latency,
bi-directional, two-wire
serial bus
A bus (contracted from omnibus, with variants multibus, motorbus, autobus, etc.) is a road vehicle that carries significantly more passengers than an average car or van. It is most commonly used in public transport, but is also in use for cha ...
suitable for
real-time
Real-time or real time describes various operations in computing or other processes that must guarantee response times within a specified time (deadline), usually a relatively short time. A real-time process is generally one that happens in defined ...
control of
voltage
Voltage, also known as electric pressure, electric tension, or (electric) potential difference, is the difference in electric potential between two points. In a static electric field, it corresponds to the work needed per unit of charge t ...
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
Master or masters may refer to:
Ranks or titles
* Ascended master, a term used in the Theosophical religious tradition to refer to spiritually enlightened beings who in past incarnations were ordinary humans
*Grandmaster (chess), National Master ...
and 16
slave devices.
SPMI is specified by the
MIPI Alliance
MIPI Alliance is a global business alliance that develops technical specifications for the mobile ecosystem, particularly smart phones but including mobile-influenced industries. MIPI was founded in 2003 by ARM, Intel, Nokia, Samsung, STMicroele ...
(Mobile Industry Process Interface Alliance).
References
Serial buses
Computer standards
MIPI Alliance standards
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