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SAMA5D3x-EK User Guide [USER GUIDE]
11180B–ATARM–29-Oct-13
5.4.7
RS232 Connector with RTS/CTS Handshake Support
Figure 5-30.
USART1 Connector J8
5.4.8
DAA RJ11 Socket (6P4C)
Figure 5-31.
DAA RJ11 Socket J16
Table 5-10.
USART Connector J8 Signal Descriptions
Pin
Mnemonic
PIO
Signal Description
1, 4, 6, 9
No connection
2
RXD (Received Data)
PB28
RS232 serial data output signal
3
TXD (Transmitted Data)
PB29
RS232 serial data input signal
5
GND
Common ground
7
RTS (Request To Send)
PB27
Active-positive RS232 input signal
8
CTS (Clear To Send)
PB26
Active-positive RS232 output signal
Mechanical
pins
Shield