TWR-SER2 User’s Manual
Page 9 of 17
The 2x5 header is intended to be used with a DB-9 Male to 10 PIN IDC socket adaptor cable. The cable
should conform to the following pin assignments.
10 Pin IDC
0.1” 2x5
DB-9 Male
Function
1
1
DCD
2
6
DSR
3
2
RX
4
7
RTS
5
3
TX
6
8
CTS
7
4
DTR
8
9
RI
9
5
GND
10
NC
NC
By default the UART2 and UART3 transceiver signals are isolated from the Tower Elevator. The signals
can be connected to the Tower Elevator connector using J22 and J23 respectively.
Pins
Description
1-2
Remove to Isolate UARTx_TX
3-4
Remove to Isolate UARTx_RX
5-6
Remove to Isolate UARTx_RTS
7-8
Remove to Isolate UARTx_CTS
3.6
CAN Bus
The TWR-SER2 features a Controller Area Network interface using an NXP TJA1051T/3 CAN
transceiver. The signals from the transceiver are connected to a 6-pin (2x3) header using the following
CAN Bus Pin Out.
Pin #
Signal Names
Signal Description
1
Not Used
2
CAN_V+
Power
3
CAN_GND
Ground
4
CAN_L
Dominant Low
5
CAN_H
Dominant High
6
Not Used
Table 1 – 2x3 Header CAN Bus Pin Out
