SLLA680 August   2025

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2DisplayPort Link Training Sequence
  6. 3AUX Transaction Syntax
    1. 3.1 Request Command Definition of AUX Transaction
    2. 3.2 Reply Command Definition of AUX Transaction
  7. 4Introduction of DS90LV047-48AEVM
  8. 5Configuration of Measuring AUX CH With DS90LV047-48AEVM and Logic Analyzer
  9. 6Summary
  10. 7References

3 AUX Transaction Syntax

The syntax of AUX transactions in Manchester format uses 1Mbps rate. There are two kinds of transaction as shown in the following.

  1. Native AUX transaction.
  2. I2C over AUX transaction.

AUX transactions must start with a preamble SYNC for synchronizing the requester and the replier, and must end with a STOP condition. AUX transactions consist of command, address and data.