5 Signal Descriptions List

The following table gives details on signal names classified by peripheral.

Table 5-1. Signal Descriptions List
Signal NameFunctionTypeActive Level
Device Service Unit - DSU
SWCLKSW ClockDigital
SWDIOSW Bidirectional DataDigital
RESETNReset inputDigitalLow
Trace Port Interface Unit - TPIU
TRACEDATA[3:0]Trace Data OutputDigital
TRACECLKTrace ClockDigital
SWOSerial Wire OutputDigital
Analog Comparators - AC
CMP[1:0]AC Comparator OutputsDigital
AIN[3:0]AC Analog InputsAnalog
Analog Digital Converter - ADC
AIN[15:0]ADC Analog InputsAnalog
VREFAADC Voltage External Reference AAnalog
VREFBADC Voltage External Reference BAnalog
VREFCADC Voltage External Reference CAnalog
Peripheral Touch Controller - PTC
XY[31:0]PTC X/Y Input/OutputAnalog
Digital Analog Converter - DAC
VOUT[1:0]DAC Voltage outputAnalog
VREFADAC Voltage External ReferenceAnalog
External Interrupt Controller - EIC
EXTINT[15:0]External Interrupts inputsDigital
NMIExternal Non-Maskable Interrupt inputDigital
Generic Clock Generator - GCLK
GCLK_IO[7:0]Generic Clock (source clock inputs or generic clock generator output)Digital
Custom Control Logic - CCL
IN[11:0]Logic InputsDigital
OUT[3:0]Logic OutputsDigital
Supply Controller - SUPC
VBATExternal battery supply InputsAnalog
OUT[1:0]Logic OutputsDigital
Power Manager - PM
RESETNReset inputDigitalLow
Oscillators Control - OSCCTRL
XOSCx - XINCrystal or external clock InputAnalog/Digital
XOSCx - XOUTCrystal OutputAnalog
32KHz Oscillators Control - OSC32KCTRL
XIN3232KHz Crystal or external clock InputAnalog/Digital
XOUT3232KHz Crystal OutputAnalog
General Purpose I/O - PORT
PA31 - PA30, PA27, PA25 - PA00Parallel I/O Controller I/O Port ADigital
PB31 - PB00Parallel I/O Controller I/O Port BDigital
PC31 - PC30, PC28 - PC10, PC07 - PC00Parallel I/O Controller I/O Port CDigital
PD21-PD20, PD12 - PD08, PD01 - PD00Parallel I/O Controller I/O Port DDigital
Real-Time Counter - RTC
IN[4:0]Tamper / Wake / Active Layer Protection InputDigital
OUTActive Layer Protection OutputDigital
Timer Counter - TCx
WO[1:0]Waveform Outputs/Capture InputsDigital
Timer Counter - TCCx
WO[7:0]Waveform Outputs/Capture InputsDigital
Position Decoder - PDEC
PDEC[2:0]PDEC InputsDigital
Parallel Capture Controller - PCC
DEN1Sensor Sync1Digital
DEN2Sensor Sync2Digital
CLKSensor ClockDigital
DATA[13:0]Sensor DataDigital
Serial Communication Interface - SERCOMx
PAD[3:0]SERCOM Inputs/Outputs PadsDigital
Quad Serial Peripheral Interface - QSPI
SCKSerial ClockDigital
CSChip SelectDigital
DATA[3:0]Data Input/OutputDigital
Ethernet MAC - GMAC
GTXENTransmit EnableDigital
GTXCKTransmit Clock or Reference ClockDigital
GTX[3:0]Transmit DataDigital
GTXERTransmit Coding ErrorDigital
GRXERReceive ErrorDigital
GRXCKReceive ClockDigital
GRX[3:0]Receive DataDigital
GRXDVReceive Data ValidDigital
GCOLCollision DetectDigital
GCRSCarrier Sense and Data ValidDigital
GMDIOManagement Data Input/OutputDigital
GMDCManagement Data ClockDigital
Universal Serial Bus - USB
DPDP for USBDigital
DMDM for USBDigital
SOF 1kHzUSB Start of FrameDigital
Control Area Network - CANx
TXCAN TransmitDigital
RXCAN ReceiveDigital
Inter-IC Sound Controller - I2S
MCK1, MCK0Host ClockDigital
SCK1, SCK0Serial ClockDigital
FS1, FS0I²S Word Select or TDM Frame SyncDigital
SDOSerial Data Output for Transmit SerializerDigital
SDISerial Data Input for Receive SerializerDigital
SD/MMC Host Controller - SDHCx
CDSD Card / SDIO / e.MMC Card DetectDigital
CMDSD Card / SDIO / e.MMC Command/Response LineDigital
WPSD Card Connector Write Protect SignalDigital
CKSD Card / SDIO / e.MMC Clock SignalDigital
DAT[3:0]SD Card / SDIO / e.MMC Data LinesDigital