Atmel SAM4S Xplained Pro Starter Kit Atmel ATSAM4S-XSTK ATSAM4S-XSTK Data Sheet
Product codes
ATSAM4S-XSTK
690
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
35.3
Block Diagram
Figure 35-1. USART Block Diagram
Table 35-1. SPI Operating Mode
PIN
USART
SPI Slave
SPI Master
RXD
RXD
MOSI
MISO
TXD
TXD
MISO
MOSI
RTS
RTS
–
CS
CTS
CTS
CS
–
(Peripheral) DMA
Controller
Channel
Channel
Interrupt
Controller
Controller
Receiver
USART
Interrupt
RXD
TXD
SCK
USART
PIO
Controller
CTS
RTS
DTR
DSR
DCD
RI
Transmitter
Modem
Signals
Signals
Control
Baud Rate
Generator
User Interface
PMC
MCK
SLCK
DIV
MCK/DIV
APB