46 Appendix B: Acronyms and Abbreviations
| Acronyms | Abbreviations |
|---|---|
| AC | Analog Comparator |
| ADC | Analog-to-Digital Converter |
| AES | Advanced Encryption Standard |
| AGC | Automatic Gain Control |
| AHB | Advanced High-Speed Bus |
| Apple® NCS | Apple Notification Center Service |
| AON | Always ON |
| APB | Advanced Peripheral Bus |
| API | Application Programming Interface |
| Arb | Arbiter |
| BFM | Boot Flash Memory |
| BG | Bandgap |
| Bluetooth® LE | Bluetooth Low Energy |
| BOD | Brown-out Detect |
| BOM | Bill of Material |
| BOR | Brown-out Reset |
| CCL | Configurable Custom Logic |
| CDM | Charged Device Model |
| CFG | System Configuration and Register Locking |
| CFGCON | Configuration Control |
| CLDO | Core Low Dropout Regulator |
| CLK | Clock |
| CM | Configuration Mismatch Reset |
| CM4CPU | Cortex M4F Processor |
| CMCC | Cortex M Cache Controller |
| CMR | Configuration Mismatch Reset |
| CNCON | Change Notice Control |
| CNEN | Change Notice Enable |
| CNF | Change Notice Flag |
| CNPDE | Change Notice Pull-down Enable |
| CNPUE | Change Notice Pull-up Enable |
| CNSTAT | Change Notice Status |
| CP | Charge Pump |
| CPU | Central Processing Unit |
| CRC | Cyclic Redundancy Check |
| CRM | Continuous Read Mode |
| CoreSight™ ROM | CoreSight ROM |
| CRU | Clock and Reset Unit |
| CS | Chip Select |
| CVD | Capacitive Voltage Divider |
| DAC |
Digital-to-Analog Converter |
| DAP | Debug Access Port |
| DCC | Debug Communication Channel |
| DDR | Double Data Rate |
| DED |
Double-bit Error Detected |
| DFE | Digital Front-End |
| DMAC | Direct Memory Access Controller |
| DMA RD | DMA-Read |
| DMA WR | DMA-Read |
| DMT | Deadman Timer |
| DMTCON | Deadman Timer Control |
| DMTEN | Deadman Timer Enable |
| DMTR | Deadman Timer Reset |
| DSCTRL | Deep Sleep System Controller |
| DSP | Digital Signal Processor |
| DSU | Device Service Unit |
| DSWDT | Deep Sleep WDT |
| DTI | Dead-Time Insertion |
| ECC | Error Correction Code |
| ECDH | Elliptic-curve Diffie-Hellman encryption |
| EIC | External Interrupt Controller |
| EOC | End-Of-Convert |
| EOS | Electrical Overstress |
| ERR | Error |
| ESD | Electrostatic Discharge |
| ETB | Embedded Trace Buffer |
| ETM | Embedded Trace Module |
| EVSYS | Event System Interface |
| FC | Flash Controller |
| FCS | Frame Check Sequence |
| FEM | Front-End Module |
| FPB | Flash Patch and Breakpoint Unit |
| FPU | Floating Point Unit |
| FRC | Fast RC Oscillator |
| FRCDIV | FRC Divider |
| FREQM | Frequency Meter |
| FSCM | Fail-safe Clock Monitor |
| FSM | Finite State Machine |
| GATT | Generic Attribute Profile (Bluetooth) |
| GCLK | Generic Clock Controller |
| GND | Ground |
| GPIO | General Purpose I/O |
| HBM | Human Body Model |
| HCI | Host Controller Interface |
| I2C | Inter-Integrated Circuit |
| IoT | Internet of Things |
| IRQ | Interrupt Request |
| ITM | Instrumentation Trace Macrocell |
| LDO | Low Dropout Regulator |
| LE | Low-Energy |
| LIN | Local Interconnect Network |
| LNA | Low-Noise Amplifier |
| LO | Local Oscillator |
| LPCLK | Low Power Clock Generation |
| LPRC | Low Power RC Oscillator |
| LUT | Each Look-up Table |
| LVD | Low-Voltage Detect |
| MCLRF | Master Clear Filter |
| MCS | Master Clock Switch |
| MCU | Microcontroller Unit |
| MFRQ | Match Frequency |
| MLDO | Main LDO |
| MPU | Memory Protection Unit |
| NDA | Non-Disclosure Agreement |
| NFRQ | Normal Frequency |
| NMCLR | External Reset |
| NMI | Non-maskable Interrupt |
| NMITR | NMI Time-out Reset |
| NPWM | Normal Pulse-Width Modulation |
| NVIC | Nested Vector Interrupt Controller |
| NVM | Non-Volatile Memory |
| NVMOP | Non-Volatile Memory Operation |
| OCD | On-Chip Debug |
| OTA | Over-the-Air |
| OTF | On-the-Fly |
| OTMX | Output Matrix |
| OTP | One Time Programmable |
| PA | Power Amplifier |
| PAC | Peripheral Access Controller |
| PCHE | Prefetch Cache |
| PFM | Program Flash Memory |
| PHY | Physical Layer |
| PLL | Phase-Locked Loop |
| PMD | Peripheral Module Disable |
| PMU | Power Management Unit |
| POR | Power-on Reset |
| POSC | Primary Crystal Oscillator |
| PPS | Peripheral Pin Select |
| PPW | Period and Pulse-Width |
| PSDU | PLCP Service Data Unit |
| PSM | Pulse Skipping Mode |
| PWM | Pulse Width Modulation |
| QoS | Quality of Service |
| QSPI | Quad I/O Serial Peripheral Interface |
| QSPI | Quad SPI interface |
| RAMECC | RAM Error Correction Code |
| RCON | Reset Control |
| REG | Register |
| RF | Radio Frequency |
| RFFE | RF Front-End |
| RoT | Root of Trust |
| RPC | Remote Procedure Call |
| RSSI | Receive Signal Strength Indication |
| RTC | Real-Time Counter |
| RTCC | Real-Time Clock Calender |
| RTOS | Real-Time Operating System |
| RTSP | Run-Time Self Programming |
| RX | Receive |
| RXC | Receive Complete |
| SEC | Single-bit Error Corrected |
| SERCOM | Serial Communication Interface |
| SERCOM I2C | SERCOM Inter-Integrated Circuit |
| SFD | Start Frame Delimiter (Zigbee®) |
| SFR | Special Function Register |
| SHA | Secure Hash Algorithm |
| SMBus™ | System Management Bus |
| SoC | System-on-Chip |
| SOSC | Secondary Crystal Oscillator |
| SPI | Serial Peripheral Interface |
| SRCON | Slew Rate Control |
| SSL | SPI Select Low |
| SWD | Serial Wire Debug |
| SWR | Software Reset |
| SWV | Serial Wire Viewer |
| Synth | Synthesizer |
| SYSRST | System Reset |
| TC | Timer Counter |
| TCC | Timer Counter Control |
| TCM | Tightly Coupled Memory |
| TPIU | Trace Port Interface Unit |
| TRX | Transmit/Receive |
| TX | Transmit |
| TXC | Transmit Complete |
| UART | Universal Asynchronous Receiver/Transmitter |
| USART | Universal Synchronous/Asynchronous Receiver/Transmitter |
| VGA | Variable Gain Amplifier |
| WDT | Watchdog Timer |
| WDTO | Watchdog Time-out Reset |
| WDTR | Watchdog Timer Reset |
| XDS | Extreme Deep Sleep |
| XTAL | Crystal Oscillator |
| ZPBOR | Zero-power BOR |