SLYT834 March   2023 ISOUSB211

 

  1. 1 Introduction
  2. 2 Existing implementation of OTG USB applications
  3. 3  On-the-go operation
  4. 4 Implementation of isolated OTG
  5. 5 Demonstration of OTG with ISOUSB211 EVM
  6. 6 Scenario A: Isolated OTG module connected to a USB-drive (bus-powered)
  7. 7  Scenario B: Isolated OTG module connected to a laptop (host)
  8. 8 Demonstration
  9. 9 Connect phone to laptop
  10. 10Connect phone to USB-drive
  11. 11Summary

11 Summary

Isolated USB OTG applications can be easily established using isolators that have flexible host and peripheral sides which gets configured during operation based on which side the 1.5-kΩ pull up is first observed externally on DP/DM lines. Such configurations can ensure smaller footprints, reduced connectors, and completely switchable roles without changes in hardware.