The glossary contains terms and acronyms that are used in this document.

Analog-to-Digital Converter (ADC)

A system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal.


Application Programming Interface (API)

A language and message format used by an application program to communicate with an operating system, application, or other service.


Basic Service Set Identifier (BSSID)

A unique address that identifies the access point/router that creates the wireless network.


Carrier Wave (CW)

A single-frequency electromagnetic wave that can be modulated in amplitude, frequency, or phase to convey information.


Digital-to-Analog Converter (DAC)

A system that converts a digital signal into an analog signal.


Delivery Traffic Indication Message (DTIM)

A Traffic Indication Message (TIM) that informs clients about the presence of buffered multicast/broadcast data on the access point.


Factory Information Configuration Registers (FICR)

Pre-programmed registers that contain chip-specific information and configuration. FICRs cannot be erased by users.


General-Purpose Input/Output (GPIO)

A digital signal pin that can be used as input, output, or both. It is uncommitted and can be controlled by the user at runtime.


Internet of Things (IoT)

Physical objects that are embedded with sensors, processing ability, software, and other technologies that connect and exchange data with other devices and systems of the Internet or other communications networks.


Medium Access Control (MAC)

The layer that controls the hardware responsible for interaction with the wired, optical, or wireless transmission medium.


Microcontroller Unit (MCU)

A small computer on a single metal-oxide-semiconductor integrated circuit chip.


Memory Protection Unit (MPU)

A computer hardware unit that provides memory protection and is usually implemented as part of the CPU.


One Time Programmable (OTP) memory

A type of non-volatile memory that permits data to be written to memory only once.

OTP memory

Packet Traffic Arbitration (PTA)

A collaborative coexistence mechanism for collocated wireless protocols.


Physical (PHY)

The first and lowest layer of computer networking. This layer is closely associated with the physical connection between devices.


Power Management Unit (PMU)

A microcontroller that controls power functions of digital platforms.

Printed Circuit Board (PCB)

A board that connects electronic components.


Pulse-Frequency Modulation (PFM)

A modulation method for representing an analog signal using only two levels (1 and 0).


Pulse-Width Modulation (PWM)

A method of reducing the average power delivered by an electrical signal, by effectively dividing it into discrete parts.


Quad Serial Peripheral Interface (QSPI)

A Serial Peripheral Interface (SPI) controller that allows the use of multiple data lines.


RC oscillator

A linear oscillator circuit that uses a combination of resistors and capacitors for its frequency selective element.

Real-time Clock (RTC)

An electronic device that keeps accurate track of time.


Serial Peripheral Interface (SPI)

Synchronous serial communication interface specification used for short-distance communication.


Service Set Identifier (SSID)

A unique identifier assigned to a wireless local area network.


System on Chip (SoC)

A microchip that integrates all the necessary electronic circuits and components of a device or other electronic systems on a single integrated circuit.


Vector Signal Analyzer (VSA)

A signal analyzer capable of analyzing digitally-modulated radio signals that may use any of a large number of digital modulation formats.