Datasheet

SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
574
32.4 Application Block Diagram
Figure 32-2. Application Block Diagram
32.5 I/O Lines Description
Smart
Card
Slot
USART
RS485
Drivers
Differential
Bus
IrDA
Transceivers
Field Bus
Driver
EMV
Driver
IrDA
Driver
IrLAP
RS232
Drivers
Serial
Port
Serial
Driver
PPP
SPI
Driver
SPI
Bus
Table 32-2. I/O Line Description
Name Description Type Active Level
SCK Serial Clock I/O
TXD
Transmit Serial Data
or Master Out Slave In (MOSI) in SPI Master Mode
or Master In Slave Out (MISO) in SPI Slave Mode
I/O
RXD
Receive Serial Data
or Master In Slave Out (MISO) in SPI Master Mode
or Master Out Slave In (MOSI) in SPI Slave Mode
Input
CTS
Clear to Send
or Slave Select (NSS) in SPI Slave Mode
Input Low
RTS
Request to Send
or Slave Select (NSS) in SPI Master Mode
Output Low