Datasheet

SAM9G20
DS60001516A-page 446  2017 Microchip Technology Inc.
31.3 Application Block Diagram
Figure 31-2: Application Block Diagram
31.4 I/O Lines Description
Table 31-1: I/O Line Description
Name Description Type Active Level
SCK Serial Clock I/O
TXD Transmit Serial Data I/O
RXD Receive Serial Data Input
RI Ring Indicator Input Low
DSR Data Set Ready Input Low
DCD Data Carrier Detect Input Low
DTR Data Terminal Ready Output Low
CTS Clear to Send Input Low
RTS Request to Send Output Low
Smart
Card
Slot
USART
RS232
Drivers
Modem
RS485
Drivers
Differential
Bus
IrDA
Transceivers
Modem
Driver
Field Bus
Driver
EMV
Driver
IrDA
Driver
IrLAP
RS232
Drivers
Serial
Port
Serial
Driver
PPP
PSTN