# Acronyms and terms Source: [https://docs.qualcomm.com/doc/80-70014-251/topic/acronyms_and_terms.html](https://docs.qualcomm.com/doc/80-70014-251/topic/acronyms_and_terms.html) List of acronymns and terms used in this document. | **Acronym or term** | **Definition** | | :---: | :---: | | DMIC | Digital microphone interface | | EDL/QDL | Emergency download mode or Qualcomm download mode | | GMSL | Gigabit multimedia serial links | | GPIO | General-purpose input/output | | QUP | Qualcomm universal peripheral | | SoC | System-on-chip | | SoM | System-on-module | | UART | Universal asynchronous receiver/transmitter | **Parent Topic:** [References](https://docs.qualcomm.com/doc/80-70014-251/topic/references.html) Last Published: Jan 28, 2026 [Previous Topic Related documents](https://docs.qualcomm.com/bundle/publicresource/80-70014-251/topics/rel-docs.md) [Next Topic Development regulatory notice](https://docs.qualcomm.com/bundle/publicresource/80-70014-251/topics/develop_device_regulatory_notice.md)