Debugging SPMI Power Management Buses with an Oscilloscope

Debugging SPMI Power Management Buses with an Oscilloscope Application Note

Designers of mobile devices and other portable systems rely on the System Power Management Interface (SPMI) protocol to monitor and dynamically control supply voltages based on real-time system demands. Enabling them to achieve lower power usage at the system level. With the optional serial triggering and analysis capability, Tektronix oscilloscopes become powerful tools for embedded system designers working with SPMI buses.

THIS APPLICATION NOTE

  • Gives a brief orientation on the physical layer and packet structures of SPMI, with a goal of providing just enough detail to help with troubleshooting
  • Explains how to set up decoding on an oscilloscope equipped with SPMI decoding
  • Explains how to interpret SPMI packet data
  • Explains the triggering and searching options available on an oscilloscope equipped with SPMI serial triggering and analysis

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