SBC-APL-350 HARDWARE MANUAL
– VER 1.00 JUN 12 2019
Page
20
of
35
4.14. Serial Port Header
The SBC-APL-350 features one internal non-galvanic isolated full function RS-232 serial port header:
COM2 (Marked M).
COM2:
Pin #
Signal
Description
Device
1
SERIAL2_DCD
Port#2 Data Carrier Detect (input)
COM2
2
SERIAL2_RXD
Port#2 Receive data (input)
COM2
3
SERIAL2_TXD
Port#2 Transmit data (output)
COM2
4
SERIAL2_DTR
Port#2 Data Terminal Ready (output)
COM2
5
GND
Ground
6
SERIAL2_DSR
Port#2 Data Set Ready (input)
COM2
7
SERIAL2_RTS
Port#2 Request-to-send (output)
COM2
8
SERIAL2_CTS
Port#2 Clear-to-send (input)
COM2
9
VCC*
5V supply output (current max. 500mA)
10
NC
Key
NOTE1: COM1/COM2 supply output is set by default at 5V. The supply output of both ports can be set
either at 5V or 12V. To set the supply output at 12V you need to adjust COM-PWR1 jumper settings. The
COM-PWR1 jumper can be found at location
4. Internal Connectors and Expansion
NOTE2: DB9 RS-232 cable is available for this header (optional). The DB9 connector pinout is the same
as the COM1 port. Please refer to the chapter
3.9. Serial Port Connector (COM1)
details.
4.15. 18/24-bit LVDS Jumper
The LVDS output of this device is configured by default for 24-bit LVDS panels. To set the LVDS output
for 18-bit LVDS panel you need to adjust BSEL1 jumper settings. To configure LVDS output for 18-bit
panel please turn the system off.
BSEL1:
Pin #
Description
1-2
24-bit LVDS output (default)
3-4
18-bit LVDS output
Then short Pin #3 and Pin #4 of the 4-pin BSEL1 header (Marked N). Turn on the power.
