The is a standardized serial interface designed to manage power subsystems in modern mobile and embedded devices. It provides a high-speed, low-latency communication path between a system-on-chip (SoC) and power management integrated circuits (PMICs) to dynamically control voltage levels based on processor performance needs. Key Features of MIPI SPMI
: Uses a priority-based system to resolve bus contention. Masters use a Round Robin mipi spmi specification pdf
The SPMI bus consists of two wires:
If referencing in a technical document:
Key takeaway from the PDF: SPMI supports a "collision detection" mechanism, allowing multiple masters (e.g., a modem and an AP) to coexist on the same bus. MIPI System Power Management Interface (MIPI SPMI℠) The