Legend of abbreviations and signals


Abbreviation/Signal

Type

Description

AAF

Short

Anti Aliasing Filter

ACLK_REF

Short

Reference clock from OSC_TOP to AUX. Source is selectable. This clock signal can be used as an event in AUX

AD0

Short

Audio Data line 0

AD1

Short

Audio Data line 1

AD2

Short

Audio Data line 2

ADC

Short

Analog to Digital Converter

ADCREF

Short

ADC reference voltage

ADC_DMA

Short

DMA trigger from the ADC, triggering DMA channel #7

ADC_DONE

Short

ADC conversion done event available in AUX

ADC_FIFO_ALMOST_FULL

Short

Event in AUX signaling that there is only room for one more sample in the ADC FIFO

ADC_IRQ

Short

Event from ADC/ADC_FIFO to MCU domain. For details see user guide

ADI

Module

Analog to Digital Interface

AGC

Module

Automatic Gain Control

AHB

Short

AMBA High-speed Bus

AIF

Short

Audio Inter Face

AIODIO0

Short

Module controlling pins assigned to AUX

AIODIO1

Short

Module controlling pins assigned to AUX

AMPCOMP

Short

Amplitude Compensation

AON

Short

Voltage domain that is Always On

AON_EVENT

Module

Always on Event routing

AON_IOC

Module

Always ON IOC

AON_PROG_WU

Short

Wake up event from AON to AUX. Up to three programmable sources OR'ed together to generate this event

AON_RTC

Module

Always ON Real Time Clock

AON_RTC_CH2

Short

Event from the AON_RTC channel 2

AON_SPISLAVE

Module

Always on part of SPI Slave module

AON_SW

Short

SW triggered event from AON to AUX

AON_WUC

Module

Always ON WakeUp Control

ARM

Short

Advanced RISC Machines, Company

ATDATA1

Signal

Trace data bus for in ATB interface port 1. Connects to ETM when ETM is present. Connects to ITM when ETM does not exist.

ATDATA2

Signal

Trace data bus for in ATB interface port 2. Connects to ITM when ETM is present. Tied-off when ETM does not exist.

ATEST

Short

Analog Test

ATEST0

Short

Analog test signal/bus

ATEST1

Short

Analog test signal/bus

ATEST_OSCHF_ANA_OUT

Signal

Internal Signal

ATEST_OSCHF_CLCKOUT_1P8V

Signal

Internal Signal

ATEST_OSCHF_CLKOUT_1P8V

Signal

Internal Signal

AUX

Module

Auxiliary

AUXIO0

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO1

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO10

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO11

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO12

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO13

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO14

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO15

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO2

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO3

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO4

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO5

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO6

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO7

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO8

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUXIO9

Short

Analog/Digital General Purpose Input Output pin that can be mapped to AUX. For details see IOC

AUX_AIODIO0

Short

Module controlling pins assigned to AUX

AUX_AIODIO1

Short

Module controlling pins assigned to AUX

AUX_COMB

Short

Combined event from AUX to MCU domain. See user guide for details

AUX_COMPA

Short

Comparator A. Analog peripheral of AUX. In AUX this can also refer to the event coming from this comparator

AUX_COMPB

Short

Comparator B. Analog peripheral of AUX. In AUX this can also refer to the event coming from this comparator

AUX_SCE

Short

Auxiliary Sensor Domain Controller

BASEPRI

Short

Special register in CPU used to prevent activation of exceptions based on their priority level

BAW

Short

Bulk Acoustic Wave

BAW_CLKGOOD

Signal

Internal Signal

BCLK

Short

Bit clock for the WCLK and serial audio data signals. This signal is an input when using an external clock source and output when using the internal clock source.

BFSR

Short

Bus Fault Status Register

BGAP

Short

Bandgap

BKPT

Short

CPU instruction, BreaKPoinT

BUS

Short

Interconnect or power domain including interconnect

BW

Short

BandWidth

BX

Short

CPU instruction, Branch and eXchange instruction set

CCP

Short

Capture Compare PWL

CLKCTRL

Module

Power domain that contains clock management for MCU system

CLKOUT

Short

SSI Clock Out, primary Output from SSI to IOs

CLK_DCDC

Signal

Internal Signal

COMPA

Module

Comparator A.

COMPB

Module

Comparator B

COMP_IN

Signal

Internal Signal

CONTROL

Short

Special register in CPU used to control selector for main stack/process stack and selector for privileged/unpriviledged modes

CPI

Short

Cycles Per Instruction

CPU

Short

Central processing unit or power domain including system CPU

CRC

Short

Cyclical Redundancy Check algorithm

CRYPTO

Module

Encryption engine

CTS

Short

Clear To Send, primary input to UART module from Ios

DAC

Short

Digital to Analog Converter

DAC_REF

Signal

DAC Reference

DAP

Short

Debug Access Port

DCDC

Module

DCDC regulator for regulating VDDR

DDI

Module

Didital to Digital Interface

DEEPSLEEP

Short

DeepSleep Mode for CPU

DIO

Short

Digital IO

DMA

Short

Direct Memory Access

DOUBLER

Module

Frequency doubling sub-module

DOUBLER_EN

Signal

Internal Signal

DOUBLER_RST

Signal

Internal Signal

DOULBER_RESET

Signal

Internal Signal

DSP

Short

Single Phase Audio Interface Format

DWT

Short

Subblock in CPU. See CPU_DWT

EPSR

Short

Execution PSR

ETM

Short

Enhanced Trace Macrocell

EVENT

Module

Event Fabric

EXC_RETURN

Signal

A pre-defined value saved to LR on exception entry. This value indicates the required return stack and processor mode when returning from the exception

FAULTMASK

Short

Special register in CPU used to prevent activation of all exceptions except NMI

FF1

Short

Feed-Forward cell 1 gain. This is one of the loop filter gm-cells which adjusts the noise shaping characteristics.

FF2

Short

Feed-Forward cell 2 gain. This is one of the loop filter gm-cells which adjusts the noise shaping characteristics.

FF3

Short

Feed-Forward cell 3 gain. This is one of the loop filter gm-cells which adjusts the noise shaping characteristics.

FIFO

Short

First In First Output

FILTER_OUT

Signal

Internal Signal

FLASH

Module

FLASH

FMC

Module

Flash Memory Controller

FPB

Short

Subblock in CPU. See CPU_FPB

FSM

Short

Finite State Machine

FSS

Short

Serial Frame signal for SSI interface

FW

Short

Firmware

GBIAS

Short

Global Bias

GLDO

Module

Global LDO for regulating VDDR

GPIO

Module

General Purpose Input/Output

GPRAM

Short

General Purpose RAM

GPT

Module

General Purpose Timer

GPT0

Module

GPT module 0

GPT1

Module

GPT module 1

GPT2

Module

GPT module 2

GPT3

Module

GPT module 3

HF

Short

High Frequency

HOLD

Signal

State

HP

Short

High Performance / High Power

HPM

Short

High Performance/Power Mode

HPM_RAMP1

Signal

State

HPM_RAMP3

Signal

State

HPM_UPDATE

Signal

State

HW

Short

Hardware

I2C

Module

Inter-Integrated Circuit, a multimaster serial single-ended computer bus

I2S

Module

Inter-IC Sound, our audio interface

IBIAS

Short

Bias Current

IBIAS_CAP_UPDATE

Signal

State

IBIAS_INCREMENT

Signal

State

ID

Short

IDentification number

IDAC

Short

ADC in OSC_DIG

IDAC_DECREMENT_WITH_MEASURE

Signal

State

IDLE

Signal

State

IFADC

Module

Intermediate Frequency Analog to Digital Converter

IFAMP

Module

Intermediate Frequency AMPlifier

IO

Short

Input/Output

IOC

Module

Input / Output Configurator

IPSR

Short

Interrupt PSR

IPTAT

Short

Current Proportional to Absolute Temperature

IREF

Short

Constant current REFerence (REF)

ISR

Short

Interrupt Service Routine

ISRC

Short

Current source

ISRC_RESET

Signal

This signal clamps the output of the current source. The signal can also be used as an event in AUX

IT

Short

CPU instruction, IF-THEN

ITM

Short

Instrumentation Trace Macrocell

JTAG

Short

Joint Test Action Group. The name of the organization that developed standard IEEE 1149.1. This standard defines a boundary-scan architecture used for in-circuit testing of integrated circuit devices. It is commonly known by the initials JTAG.

LDM

Short

CPU instruction, Load Multiple

LDO

Short

Low Drop-Out voltage regulator

LDR

Short

CPU instruction, Load Register

LDRD

Short

CPU instruction, Doubleword Load Register

LFSR

Short

Linear Feedback Shift Register

LJF

Short

Dual Phased Left Justified Audio Interface Format

LNA

Short

Low-Noise Amplifier

LP

Short

Low Power

LPBUFF

Short

Low Power Buffer

LPM

Short

Low Power Mode

LPM_IBIAS_WAIT_CNT

Signal

Internal Signal

LPM_UPDATE

Signal

State

LR

Short

Link Register 12 from Cortex M Processor

LSB

Short

Least Significant Bit

LSU

Short

Load Store Unit

MCLK

Short

High-speed master clock used for sample conversion in the external audio device. This signal is not unused when using an external clock source.

MCU

Short

Microcontroller Unit

MCUCLK

Short

Undivided MCU system clock

MCU_AON

Short

Power doamin that is always powered when MCU voltage domain is powered

MCU_AONIF

Module

Always on interface module

MCU_EV

Short

Event from MCU domain to AUX. Source is configurable in event fabric

MMFSR

Short

Memory Manage Fault Status Register

MPU

Short

Memory Protection Unit

MRS

Short

CPU instruction, Move the contents of a special register to a general-purpose register

MSB

Short

Most Significant Bit

MSP

Short

Main Stack Pointer

NANOAMP_BIAS

Module

Submodule generating nA bias currents

NMI

Short

Non-Maskable Interrupt

NMOS

Short

N-channel MOS transistor

NOM

Short

Nominal value

NRTZ

Short

Non-Return-to-Zero

NRZ

Short

Non Return-to-Zero

NVIC

Short

Nested Vectored Interrupt Controller

OBSMUX0

Short

In AUX this refers to bit 0 of the signals that can be routed from the observability mux to AUX

OBSMUX1

Short

In AUX this refers to bit 1 of the signals that can be routed from the observability mux to AUX

OBSMUX2

Short

In AUX this refers to bit 2 of the signals that can be routed from the observability mux to AUX

OBSMUX3

Short

In AUX this refers to bit 3 of the signals that can be routed from the observability mux to AUX

OSC

Short

Oscillator (see also ANAOSC)

OSCHFANA

Signal

Internal Signal

OSCHFCLK

Signal

Internal Signal

OSCLF

Signal

Internal Signal

OSCLFANA

Signal

Internal Signal

OSCLFCLK

Signal

Internal Signal

OSC_DIG

Module

Oscillators Digital control

OSC_TOP

Module

Oscillator System Top level. One of the main blocks in top level analog.

PA

Module

Power Amplifier

PC

Short

Program Counter

PERIPH

Short

Power domain including peripheral modules

PLL

Short

Phase Locked Loop

PMOS

Short

P-channel MOS transistor

POP

Short

CPU instruction, Pop register(s) off the stack

PRBS2

Short

Psueudo Random Bit Sequence number 2, delayed

PRBS2d

Short

Psuedo Random Bit Sequence 2, delayed. Can be used for generation of dither noise to remove tones, or it can be output on the IFADC data outputs to check the integrity of the digital output path from the ADC.

PRCM

Module

Power Reset Clock Manager

PRIMASK

Short

Special register in CPU used to prevent activation of all exceptions with configurable priority

PSP

Short

Process Stack Pointer

PSR

Short

Program Status Register

PWM

Short

Pulse Width Modulation

Q1

Short

XTAL oscillator input node

Q2

Short

XTAL oscillator output node

R0

Short

General-purpose Register 0 from Cortex M Processor

R1

Short

General-purpose Register 1 from Cortex M Processor

R10

Short

General-purpose Register 10 from Cortex M Processor

R11

Short

General-purpose Register 11 from Cortex M Processor

R12

Short

General-purpose Register 12 from Cortex M Processor

R2

Short

General-purpose Register 2 from Cortex M Processor

R3

Short

General-purpose Register 3 from Cortex M Processor

R4

Short

General-purpose Register 4 from Cortex M Processor

R5

Short

General-purpose Register 5 from Cortex M Processor

R6

Short

General-purpose Register 6 from Cortex M Processor

R7

Short

General-purpose Register 7 from Cortex M Processor

R8

Short

General-purpose Register 8 from Cortex M Processor

R9

Short

General-purpose Register 9 from Cortex M Processor

RADC

Short

ADC in OSC_DIG

RADC_DIG

Short

Digital Control for RADC

RC

Short

Resistor Capacitor

RCOSC

Short

RC Oscillator

RCOSCHF

Short

See rcosc_hf

RCOSC_HF

Short

High Frequency RC Oscillator

RCOSC_HF_CLK

Signal

Internal Signal

RCOSC_LF

Short

Low Frequency RC Oscillator

RCOSC_LF_CLK

Signal

Internal Signal

REFSYS

Short

Reference System. Module generating refernce voltages and reference currents for use in analog blocks.

RF

Module

Radio Frequency

RFC

Module

RF Core

RFLDO

Module

LDO for RF modules

RFN

Signal

RF Negative net

RFP

Signal

RF Positive net

RF_TOP

Module

Radio Frequency Top level block (LNA, PA, Mixers)

RJF

Short

Dual Phased Right Justified Audio Interface Format

ROM

Short

Read Only Memory

RTC

Short

Real Time Clock

RTC_4KHZ

Short

4 kHz signal coming from the RTC counter. Can be used by timers in AUX

RTC_CH2_EV

Short

Event that goes high every time the RTC channel 2 generates an event

RTC_UPD

Signal

16 KHz signal used to synchronize the radio timer to RTC

RTOS

Short

Real-Time Operating System

RTS

Short

Request To Send, primary output from UART module to Ios

RTZ

Short

Return-to-Zero

RX

Short

Receive

RXD

Short

SSI Receive Input, primary input to SSI from IOs

RXTX

Short

RX / TX. Pin on device

SAR

Short

Successive Approximation Register (used for Binary Search)

SCK

Short

Serial Clock for AON SPI-S interface. (IOC Contex)

SCL

short

Serial CLock, I2C clock line

SCLK_HF

Short

System Clock High Frequency

SCLK_LF

Short

System Clock Low Frequency

SCLK_MF

Short

System Clock Medium Frequency

SCS

Signal

Serial Chip Select for AON SPI-S Interface. (IOC Context)

SDI

Signal

Serial Data In for AON SPI-S Interface. (IOC Contex)

SDIV

Short

CPU instruction, Signed Divide

SDO

Signal

Serial Data Out for AON SPI-S Interface. (IOC Contex)

SERIAL

Short

Power domain including serial modules

SEV

Short

CPU instruction, Send Event

SHUTDOWN

Short

Lowest possible powermode, where all but the VDDS domain is powered off

SLDO

Module

Synth LDO

SMI

Short

Serial Modem Interface

SMPH_AUTOTAKE_DONE

Short

A semaphore has been released to c3po using the AUTOTAKE feature in AUX_SMPH module

SOCAUX

Short

Not a good term...

SOC_AUX

Short

Not a good term...

SP

Short

Stack Pointer

SPI

Short

Serial Peripheral Interface

SPI-S

Module

Serial Peripheral Interface Slave

SRAM

Short

Static Random Access Memory

SSI

Short

Synchronous Serial Interface

SSI0

Module

Instance 0 of SSI Module

SSI1

Module

Instance 1 of SSI Module

STM

Short

CPU instruction, Store Multiple

STRD

Short

CPU instruction, Doubleword Store Register

SVC

Short

CPU instruction, Supervisor Call

SW

Short

Software

SWEV0

Short

SW triggered event 0 from AUX to AON. Triggered by writes to AUX_EVCTL:SWEVSET

SWEV1

Short

SW triggered event 1 from AUX to AON. Triggered by writes to AUX_EVCTL:SWEVSET

SWEV2

Short

SW triggered event 2 from AUX to AON. Triggered by writes to AUX_EVCTL:SWEVSET

SWO

Short

Serial Wire Output

SWV

Signal

Serial Wire Viewer Debug Signal from CPU Module

SYSBUS

Short

CPU system bus

TAP

Short

Test Access Port

TCK

Signal

JTAG compliant pin (test clock)

TDC

Short

Time to Digital Converter

TDC_DONE

Short

Time to Digital Conversion done. Event available in AUX

TDC_PRE

Signal

Time to digital prescaler output. Can be used as an event in the TDC

TDI

Short

Test Data In for JTAG interface

TDO

Short

Test Data Out for JTAG interface

TI

Short

Texas Instruments

TIMER0_EV

Short

Event from timer0 in AUX. Event triggered when timer count >= target value

TIMER1_EV

Short

Event from timer1 in AUX. Event triggered when timer count >= target value

TPA

Short

Trace Port Analyzer

TPIU

Short

Subblock in CPU. See CPU_TPIU

TRACECLK

Signal

Trace Clock Signal From CPU Module

TRACEDATA

Signal

Trace Data Bus signal From CPU Module

TRNG

Module

True Random Number Generator

TX

Short

Transmit

TXD

Short

SSI Transmit Output, primary output from SSI to IOs

TXO

Short

Temperature Compensated Crysal Oscillator, alternalive to simple XTAL

UART

Short

Universal Asynchronous Receiver/Transmitter

UART0

Module

Instance 0 of UART Module

UARTRXD

Short

Receive input, Primary input to UART module from Ios

UARTTXD

Short

Transmit output, Primary output from UART module to Ios

UDIV

Short

CPU instruction, Unsigned Divide

UDMA

Module

Micro DMA

UFSR

Short

Usage Fault Status Register

V2I

Short

Voltage to Current

VBN

Signal

Internal Signal

VBP

Signal

Internal Signal

VCO

Short

Votage Controlled Oscillator

VCOLDO

Module

LDO for VCO

VCTRL

Signal

Internal Signal

VDD

Signal

Regulated supply voltage for digital domain.

VDDA

Signal

Positive supply voltage

VDDR

Signal

Regulated (1.7V?) supply voltage.

VDDR_OK

Signal

Signal indicating that VDDR Supply voltage is good

VDDS

Signal

Main supply voltage (battery).

VDDS2

Signal

Supply pin for IO cells on segment 2

VDDS3

Signal

Supply pin for IO cells on segment 3

VDDS_BOD_OK

Signal

Signal indicating that VDDS Supply voltage is good

VDD_BOD_OK

Signal

Signal indicating that VDD Supply voltage is good

VDD_LOCAL

Signal

Internal Signal

VIMS

Short

Power domain including Flash memory

VMAX

Short

Voltage Max

VMIN

Short

Voltage Min

VREF

Signal

Voltage Reference

WASP

Short

Wireless Audio Streaming Protocol

WCLK

Short

Sample framing signal/clock that defines the sample frequency and the word boundaries in the serial data stream. The WCLK frequency is identical to the sample frequency. This signal is an input when using an external clock source and output when using the internal clock source.

WDT

Module

Watch Dog Timer

WFE

Short

CPU instruction, Wait For Event

WFI

Short

CPU instruction, Wait For Interrupt

WIC

Module

Wakeup Interrupt Controller

WUC

Module

Wake Up Controller

WUC_TAP

Short

Wake Up Controller Test Access Port

X48P

Short

Pin on device dedicated to 48MHz xtal/oscillator

XN

Short

eXecute Never

XOSC

Short

Xrystal Oscillator

XOSCHF

Short

See xosc_hf

XOSC_HF

Short

High Frequency Xrystal Oscillator

XOSC_LF

Short

Low Frequency Xrystal Oscillator

XPSR

Short

Program Status Register

XTAL

Short

Crystall

aclk_ref

Signal

Same as ACLK_REF

adc_data

Signal

Internal Signal

ampcomp_req

Signal

Internal Signal

cap_init_column

Signal

Internal Signal

cap_init_row

Signal

Internal Signal

dtst_osc_clkin

Signal

Internal Signal

ibias_cap_updated

Signal

Internal Signal

ibias_dec_with_measure

Signal

Internal Signal

ibias_inc

Signal

Internal Signal

ibias_wait_cntr

Signal

Internal Signal

idac_dec_with_measure

Signal

Internal Signal

idac_increment

Signal

Internal Signal

oscdig_clk

Signal

Internal Signal

ppm

Short

Parts Per Million

rcosc_hf

Signal

RC-oscillator High Frequency module or the clock signal outputted by this module

rcosc_hf_clk

Signal

Internal Signal

rcosc_hf_d24m_clk

Signal

Internal Signal

rcosc_hf_dlf

Signal

Internal Signal

rcosc_hf_dlf_clk

Signal

Internal Signal

rcosc_hf_dmf_clk

Signal

Internal Signal

rcosc_lf

Signal

RC-oscillator Low Frequency module or the clock signal outputted by this module

rcosc_lf_clk

Signal

Internal Signal

sclk_hf

Signal

System Clock High Frequency

sclk_lf

Signal

System Clock, Low Frequency

sclk_mf

Signal

Internal Signal

uDIGLDO

Short

See uDIG

uDMA

Short

Micro DMA, anARM IP

uLDO

Module

Micropower Low Drop-out Voltage Regulator

xosc_hf

Signal

XOSC High frequency module or the clock signal outputted by this module

xosc_hf_d24m_clk

Signal

Internal Signal

xosc_hf_dlf

Signal

Internal Signal

xosc_hf_dlf_clk

Signal

Internal Signal

xosc_hf_dmf_clk

Signal

Internal Signal

xosc_hf_idac

Signal

Internal Signal

xosc_lf

Signal

XOSC Low frequency module or the clock signal outputted by this module

xosc_lf_clk

Signal

Internal Signal

xosc_lf_q1

Signal

Internal Signal

xosclf

Signal

See xosc_lf