Table 2-1. Signal Description List (Continued)
Signal Name
Function
Type
Universal Synchronous Asynchronous Receiver Transmitter - USARTx [3..0]
SCKx
USARTx Serial Clock
I/O
TXDx
USARTx Transmit Data
Output
RXDx
USARTx Receive Data
Input
RTSx
USARTx Request To Send
Output
CTSx
USARTx Clear To Send
Input
Universal Asynchronous Receiver Transmitter - UARTx [1..0]
UTXDx
UARTx Transmit Data
Output
URXDx
UARTx Receive Data
Input
Synchronous Serial Controller - SSCx [1..0]
TDx
SSC Transmit Data
Output
RDx
SSC Receive Data
Input
TKx
SSC Transmit Clock
I/O
RKx
SSC Receive Clock
I/O
TFx
SSC Transmit Frame Sync
I/O
RFx
SSC Receive Frame Sync
I/O
Timer/Counter - TCx [5..0]
TCLKx
TC Channel x External Clock Input
Input
TIOAx
TC Channel x I/O Line A
I/O
TIOBx
TC Channel x I/O Line B
I/O
Serial Peripheral Interface - SPIx [1..0]
SPIx_MISO
Master In Slave Out
I/O
SPIx_MOSI
Master Out Slave In
I/O
SPIx_SPCK
SPI Serial Clock
I/O
SPIx_NPCS0
SPI Peripheral Chip Select 0
I/O
SPIx_NPCS[3..1]
SPI Peripheral Chip Select
Output
Two-Wire Interface - TWIx [2..0]
TWDx
Two-wire Serial Data
I/O
TWCKx
Two-wire Serial Clock
I/O
CAN controller - CANx [1..0]
CANRXx
CAN input
Input
CANTXx
CAN output
Output
Soft Modem - SMD
DIBN
Soft Modem Signal
I/O
DIBP
Soft Modem Signal
I/O
Active Level
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Low
Low
—
—
—
—
—
—
SAMA5D3 Series [DATASHEET]
7
Atmel-11121F-ATARM-SAMA5D3-Series-Datasheet_02-Feb-16