SAM-G53N_14 Datasheet, PDF (759/949 Pages) ATMEL Corporation – Atmel | SMART ARM-based Flash MCU

33.3 Block Diagram
Figure 33-1. USART Block Diagram
Interrupt
Controller
USART Interrupt
USART
Channel
(Peripheral)
DMA Controller
Channel
Receiver
Transmitter
PIO
Controller
RXD
RTS
TXD
CTS
Bus clock
Bridge
PMC
APB
Peripheral clock
Peripheral clock/DIV
User
Interface
Baud Rate
Generator
SCK
33.4 I/O Lines Description
Table 33-1. I/O Line Description
Name Description
SCK Serial Clock
Transmit Serial Data
TXD
or Master Out Slave In (MOSI) in SPI master mode
or Master In Slave Out (MISO) in SPI slave mode
RXD
Receive Serial Data
or Master In Slave Out (MISO) in SPI master mode
or Master Out Slave In (MOSI) in SPI slave mode
CTS
Clear to Send
or Slave Select (NSS) in SPI slave mode
RTS
Request to Send
or Slave Select (NSS) in SPI master mode
Type
I/O
Active Level
—
I/O
—
Input
—
Input
Low
Output
Low
SAM G53G / SAM G53N [DATASHEET]
Atmel-11240E-ATARM-SAM-G53G-SAM-G53N-Datasheet_17-Oct-14
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