Glossary
The following abbreviations and terms are used in this documentation:
ACS
analog control system
ADC
analog-to-digital converter
AoA
angle of arrival
AoD
angle of departure
Arm Cortex-M33 processor
processing core that can be used to configure the overall system after initial boot, and is typically used to coordinate the system interaction with external components
ASCC
audio sink clock counter
CC312
Arm TrustZone CryptoCell-312 Security IP
CCIT
Causal Conditional Inference Tree
CID
chip identifier
CM
chip manufacture life cycle state
CMSIS
Cortex Microcontroller Software Interface Standard
CRC
cyclic redundancy check
CS
chip select
DAC
digital-to-analog converter
DM
device manufacture life cycle state
DMA
direct memory access
DNL
differential non-linearity
DSP
digital signal processor
ECC
error correcting code
EH
energy harvesting
EVB
Evaluation and Development Board
FIFO
A section of memory that is treated as a buffer where components that use this memory use pointers to handle data in a first-in, first-out manner.
FOTA
firmware-over-the-air
GAP
generic access profile
GATT
generic attribute profile
GPIO
general-purpose input/output
HCI
host controller interface
HIZ
high impedance
I2C
inter-IC communication protocol
I2S
inter-IC sound protocol
IDAU
implementation defined attribution unit
IRK
identity resolving key (used for generating and resolving the resolvable random private address)
JTAG
joint test action group (developer of IEEE standard 1149.1-1990)
L2CAP
logical link control and adaptation protocol
LDO
low dropout voltage regulator
LIN
local interconnect network
LSAD
low-speed analog-to-digital
LSB
least significant bit
MCU
microcontroller unit
memory block instance
an instance of RAM, ROM, or flash memory
memory bus
a communication system that transfers data between memory or memory-mapped components and the cores that operate on that data
MSB
most significant bit
MUX
multiplexer, selector of one signal from many
NVIC
nested vectored interrupt controller
NVM
non-volatile memory
PCM
pulse code modulation
PLL
phase-locked loop
PMU
power management unit
POR
power-on-reset
PWM
pulse width modulation
RAM
random-access memory
RC32
32 KHz standby RC32 oscillator clock source
RCCLK
24 MHz RC oscillator clock source
RFCLK
48 MHz XTAL clock source
RFFE
radio-frequency front-end
RMA
return to manufacturer (one of the life cycle states)
ROM
read-only memory
RTC
real-time clock
SAR-ADC
successive approximation ADC
SAU
secure attribution unit
SCL
serial clock (part of an I2C bus)
SDA
serial data (part of an I2C bus)
SDAC
simple DAC
SE
secure lifecycle state
SPI
Serial Peripheral Interface
SW
serial wire
SWJ-DP
serial wire and JTAG debug port
TOF
time of flight
TRNG
true random number generator
UART
universal asynchronous receiver-transmitter
VBAT
supply voltage to the system (typically supplied from a battery)
VCO
voltage-controlled oscillator
VDDA
supply voltage for the non-RF analog blocks
VDDC
supply voltage for the digital logic
VDDFLASH
supply voltage powering flash memory
VDDM
supply voltage for the memories
VDDO
supply voltage for the digital I/O pads, including the GPIO and debug port (SWJ-DP) pads
VDDPA
optional supply voltage for the power amplifier from the RF front-end
VDDRF
supply voltage for the RF front-end
VREF
bandgap reference voltage
VREG
regulated reference supply voltage
VSSA
analog ground supply reference
VSSO
ground reference for the digital I/O pads
VSSRF
RF ground supply reference
XTAL
crystal, generally quartz-based
XTAL32K
32 KHz standby XTAL32K clock source