5 Signal Descriptions List

The following table provides details on signal names classified by peripherals.

Table 5-1. Signal Descriptions List
Signal Name Function Type
Device Service Unit (DSU)
SWCLK Serial Wire Clock Digital Input
SWDIO Serial Wire Bidirectional Data Pin Digital I/O
RESET External Reset Pin (Active Level: LOW) Digital Input
Trace Port Interface Unit (TPIU)
TRACEDATA[3:0] Trace Data Output Digital Output
TRACECLK Trace Clock Digital Output
SWO Serial Wire Output Digital Output
Analog Comparators (AC)
CMP[1:0] AC Comparator Outputs Digital Output
AIN[3:0] AC Comparator Inputs Analog Input
Analog Digital Converter (ADC)
AIN[15:0] ADC Input Channels Analog Input
VREFA ADC External Reference Voltage A Analog Input
VREFB ADC External Reference Voltage B Analog Input
VREFC ADC External Reference Voltage C Analog Input
Peripheral Touch Controller (PTC)
XY[31:0] X-lines and Y-lines Digital Output (X-line) /Analog I/O (Y-line)
Digital Analog Converter (DAC)
VOUT[1:0] DAC Voltage Outputs Analog Output
VREFA DAC External Reference Voltage Analog Input
External Interrupt Controller (EIC)
EXTINT[15:0] External Interrupts Pins Digital Input
NMI Non-Maskable Interrupt Pin Digital Input
Generic Clock Generator (GCLK)
GCLK_IO[7:0] Generators Clock Source (Input) or Generic Clock Signal (Output) Digital I/O
Custom Control Logic (CCL)
IN[11:0] Inputs to lookup table Digital Input
OUT[3:0] Outputs from lookup table Digital Output
Supply Controller (SUPC)
VBAT (PB03) External battery supply Analog Input
OUT[1:0] Logic Outputs Digital Output
Reset Controller (RSTC)
RESET External Reset Pin (Active Level: LOW) Digital Input
Oscillators Control (OSCCTRL)
XIN Crystal Oscillator or External Clock Input Analog Input (Crystal Oscillator)/Digital Input (External Clock)
XOUT Crystal Oscillator Output Analog Output
32 kHz Oscillators Control (OSC32KCTRL)
XIN32 32.768 kHz Crystal Oscillator or External Clock Input Analog Input (Crystal Oscillator)/Digital Input (External Clock)
XOUT32 32.768 kHz Crystal Oscillator Output Analog Output
General Purpose I/O (PORT)
PA31 - PA30, PA27, PA25 - PA00 General Purpose I/O Pin in Port A Digital I/O
PB31 - PB30, PB25-PB00 General Purpose I/O Pin in Port B Digital I/O
PC31 - PC30, PC28 - PC10, PC07 - PC05, PC03-PC00 General Purpose I/O Pin in Port C Digital I/O
PD21-PD20, PD12 - PD08, PD01 - PD00 General Purpose I/O Pin in Port D Digital I/O
Real-Time Counter (RTC)
IN[4:0] Tamper Detection Inputs Digital Input
OUT Tamper Detection Outputs Digital Output
Timer Counter (TCx)
WO[1:0] Capture Inputs or Waveform Outputs Digital I/O
Timer Counter (TCCx)
WO[7:0] Capture Inputs or Waveform Outputs Digital I/O
Position Decoder (PDEC)
QDI[2:0] Peripheral Decoder Inputs Digital Input
Parallel Capture Controller (PCC)
DEN1 Sensor Data Enable 1 Digital Input
DEN2 Sensor Data Enable 2 Digital Input
CLK Sensor Clock Digital Input
DATA[13:0] Sensor Data Digital Input
Serial Communication Interface (SERCOMx)
PAD[3:0] General SERCOM Pins Digital I/O
Quad Serial Peripheral Interface (QSPI)
SCK Serial Clock Digital Output
CS Chip Select Digital Output
DATA[3:0] Data Input/Output Digital I/O
Ethernet MAC (GMAC)
GTXEN Transmit Enable Digital Output
GTXCK Transmit Clock or Reference Clock Digital I/O
GTX[3:0] Transmit Data Digital Output
GTXER Transmit Coding Error Digital I/O
GRXER Receive Error Digital I/O
GRXCK Receive Clock Digital I/O
GRX[3:0] Receive Data Digital I/O
GRXDV Receive Data Valid Digital I/O
GCOL Collision Detect Digital I/O
GCRS Carrier Sense and Data Valid Digital I/O
GTSUCOMP TSU Timer Comparison Valid Digital I/O
GMDIO Management Data Input/Output Digital I/O
GMDC Management Data Clock Digital Output
Universal Serial Bus (USB)
DP Differential Data Line + Port Digital I/O
DM Differential Data Line - Port Digital I/O
SOF 1kHz USB Start of Frame Output Digital Output
Control Area Network (CANx)
TX CAN Transmit Digital Output
RX CAN Receive Digital Input
Inter-IC Sound Controller (I2S)
MCK1, MCK0 Host Clock Pins Digital I/O
SCK1, SCK0 Serial Clock Pins Digital I/O
FS1, FS0 I2S Word Select / TDM Frame Sync Pins Digital I/O
SDO Serial Data Output for Transmit Serializer Digital Output
SDI Serial Data Input for Receive Serializer Digital Input
SD/MMC Host Controller (SDHCx)
CD SD Card / SDIO / e.MMC Card Detect Digital Input
CMD SD Card / SDIO / e.MMC Command/Response Line Digital I/O
WP SD Card Connector Write Protect Signal Digital Input
CK SD Card / SDIO / e.MMC Clock Signal Digital Output
DAT[3:0] SD Card / SDIO / e.MMC Data Lines Digital I/O