Smart Machine Smart Decision
3.5 UART port interface
Figure 8: UART ports
Main UART (Reserved)
AUX UART (Reserved)
Table 5: Main UART port
Pin
Signal
I/O
Description
1
DCD
O
Data carrier detection
2
TXD
O
Transmit data
3
RXD
I
Receive data
4
DTR
I
Data Terminal Ready
5
GND
GND
6
-
-
-
7
CTS
I
Clear to Send
8
RTS
O
Request to Send
9
RI
O
Ring Indicator
Mini PCIe
_EVB kit_User Guide_V1.00
14
2014-05-05
