
Embedian, Inc.
50
SMART-BEE User’s Manual Document Revision v.1.2
CN12: Location on Board, A4
RS232/RS422/RS485
Header: HEADER DIP
10*2P 180D MALE 2.0mm
Edge
Finger
Sitara AM335x CPU
Type
Header
Pin
Signal
Name
Function
Pin#
Ball
Mode
Signal
Name
1
422_
TX
‐
/
485_
RX
‐
2
422_
TX+/
485_
RX+
3
SER0
_RX
Receive Data
P130
E15
0
UART0_RXD
I
4
SER0
_RTS
Ready to Send
P131
E17
0
UART0_
RTSN
O
5
SER0
_TX
Transmit Data
P129
E16
0
UART0_TXD
O
6
SER0
_CTS
Clear To Send
P132
E18
0
UART0_
CTSN
I
7
422_
RX+
8
422_
RX
‐
9
GND
P
10
NC
Note:
The ones marked as
blue
are RS232 signals. When using RS232 as
function, please shunt pin 1-2 of JP2.