Repack | Mipi Spmi Specification Pdf

Introduction

Caution: Do not share the PDF publicly. It is protected by copyright. Use only for internal or educational purposes with proper licensing. mipi spmi specification pdf

Are you designing a PCB and need help with the physical layout (trace impedance, etc.)? Are you writing a Linux driver for an SPMI controller? Introduction Caution: Do not share the PDF publicly

The current version of the MIPI SPMI specification (v2.0) focuses on reducing pin count and latency while maximizing the granularity of power control across a System-on-Chip (SoC). What is MIPI SPMI? SCLK (Serial Clock): Driven by the master (usually the AP)

• SCLK (Serial Clock): Driven by the master (usually the AP).
• SDATA (Serial Data): Bidirectional line.

The MIPI System Power Management Interface (MIPI SPMI℠) is a standardized, high-speed, two-wire serial interface designed to facilitate efficient communication between a System-on-Chip (SoC) and power management integrated circuits (PMICs). It was developed by the MIPI Alliance to replace legacy point-to-point interfaces, significantly reducing pin count and board complexity in mobile and portable devices.

3. System Architecture

      ┌────────────┐      SPMI Bus      ┌─────────────┐
      │   Master   │◄──────────────────►│   Slave 1   │
      │  (e.g., AP) │                     │  (PMIC)     │
      └────────────┘                     └─────────────┘
             │                                   │
             │                                   │
             ▼                                   ▼
      ┌────────────┐                     ┌─────────────┐
      │   Slave 2  │                     │   Slave 3   │
      │ (Voltage    │                     │ (Clock Gen) │
      │  Regulator) │                     └─────────────┘
      └────────────┘