Datasheet

791
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
39.3 Block Diagram
Figure 39-1. USART Block Diagram
Table 39-1. 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
Receiver
USART
Interrupt
RXD
TXD
SCK
USART
PIO
Controller
CTS
RTS
Transmitter
Baud Rate
Generator
User Interface
PMC
MCK
SLCK
DIV
MCK/DIV
APB