PMBus (Power Management Bus)

PMBus (Power Management Bus) is an open power-management communications standard published in 2005 (Artesyn and partners) for data transfer, commands, and formats (similar in spirit to smart-battery standards).

Wrong address mode or PEC options yields wrong reports. See Settings.

Decode Settings

PMBus Decode Settings

• Channel:
  • Clock Channel (SCK): PMBus clock.
  • Data Channel (SDA): PMBus data.
• Options:
  • 8-bit addressing (Including R/W in Address): Show 8-bit address (7-bit + Rd/Wr). Field enabled (Enable) when checked. Default: cleared.
  • PEC decode: Include PEC in analysis. Field enabled (Enable) when checked. Default: cleared.
• Clock Stretching: Configure clock stretching. Field enabled (Enable) when checked. Default: cleared (timeout blank).
• Ignore Glitch: Ignore slow-transition noise. Field enabled (Enable) when checked. Default: checked, < 2 sample points.

Result

PMBus decode result

See also

• PMBus — Protocol Analyzer settings