# Acronyms and terms

Source: [https://docs.qualcomm.com/doc/80-88500-3/topic/132_Acronyms_and_terms.html](https://docs.qualcomm.com/doc/80-88500-3/topic/132_Acronyms_and_terms.html)

| Acronym or term | Expansion |
| --- | --- |
| API | Application programming interface |
| BSP | Board support package |
| CDT | Configuration data table |
| DMIC | Digital MIC |
| DOL | Digital overlap mode |
| DSI | Display serial interface |
| DSP | Digital signal processor |
| DTS | Device tree source |
| Fps | Frames per second |
| GBM | Generic buffer management |
| GDB | GNU debugger |
| GFX | Graphics |
| GPIO | General-purpose input/output |
| HBP | Horizontal back porch |
| HEIF | High efficiency image file format |
| HEVC | High efficiency video codec |
| HFP | Horizontal front porch |
| HLOS | High-level operating system |
| HS | High-speed |
| HSA | Horizontal sync active |
| I/O | Input/output |
| IDP | Integrated development platform |
| IOCTL | Input/output control |
| IoT | Internet of things |
| ISP | Image sensor processor |
| LEF | Long exposure frame |
| LK | Little kernel |
| LP | Low power |
| LTS | Long-term support |
| LU | Linux Ubuntu |
| MCLK | Master clock |
| MFNR | Multiframe noise reduction |
| Mux | Multiplexer |
| NTPD | Network time protocol daemon |
| ODK | Open data kit/open development kit |
| OE | OpenEmbedded |
| OF | Open firmware |
| OS | Operating system |
| OTA | Over-the-air |
| PCAT | Qualcomm product configuration Assistant tool |
| PMIC | Power management integrated circuit |
| QDL | Qualcomm downloader |
| QPST | Qualcomm Product Support Tool |
| QUP | Qualcomm universal peripheral |
| RSSI | Receiver signal strength indicator |
| Rx | Receive |
| SDP | Snapdragon profiler |
| SE | Software engine |
| SEF | Short exposure frame |
| sHDR | Staggered high dynamic range |
| SNR | Signal-to-noise-ratio |
| SoC | System-on-chips |
| SPI | Serial peripheral interface |
| SSC | Spread spectrum clock |
| TE | Tearing effect |
| Tx | Transmit |
| UART | Universal asynchronous receiver/transmitter |
| UEFI | Unified extensible firmware interface |
| USB | Universal serial bus |
| UVC | USB video class |
| WMI | Wireless module interface |
| WSA | Water smart amplifier |
| WSP | Water scale package |

**Parent Topic:** [References](https://docs.qualcomm.com/doc/80-88500-3/topic/131_References.html)

Last Published: Sep 26, 2023

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