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U4431A Module
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Keysight U4431A MIPI M-PHY Protocol Analyzer Hardware and Probing Guide
U4431A Module Hardware Components
The Keysight U4431A MIPI M-PHY Protocol Analyzer module (hereafter referred to as the U4431A
module) provides acquisition capabilities to test and debug an M-PHY component independently or
as an integrated M-PHY based design. You can analyze and debug the captured M-PHY data using
various Keysight tools and viewers available in the Keysight Logic and Protocol Analyzer GUI.
You can use a single U4431A module to capture M-PHY traffic on a:
• unidirectional link (either Tx or Rx sublink)
• or a bidirectional link (Tx and Rx sublinks)
A single U4431A module supports data capture for a link width of up to 4 lanes per sublink.
The following figure displays a U4431A module with its components labeled.
Figure 1
U4431 Module Components
Interface Port
Trigger IN and OUT Connectors
Analysis Pods
Data Lane Status
LEDs
Out of Service LED
Pod Label
Retaining Screws
Module Insertion/Extraction Handle
Model Number and
Name
