4 Summary

This application note addresses how to program the DS2X0DF810 25-28G retimers to read the internal junction temperature from the on-die temperature sensor and how to extend the TLR based on the junction temperature readback. By applying these procedures, designers have a method to monitor the approximate junction temperature of the DS2X0DF810 retimer. Moreover, the robustness of the DS2X0DF810 may be further increased in challenging operating environments where the ambient temperature varies beyond the default TLR range mentioned in the DS2X0DF810 data sheet.