15
Chapter 5 Ports and Connectors
Chapter 5
The USB 2.0 ports (USB 1, 2 and 3) and OTG connector are used for USB communication. In
addition, the USB OTG allows the board and the devices connected to it to switch back and
forth between the roles of host and device.
When the system board is in host mode, it acts as a computer and allows USB peripherals to
be connected through the USB OTG port. When the system board is in device mode, it acts as
a peripheral device connecting to a host computer. And in this mode, the system board can
read and write to the onboard eMMC memory from your host computer by using a micro-B
type USB cable.
Pin
Pin Name
1
5V
2
Data-
3
Data+
4
GND
5
NC
USB Ports
The COM 1 port provides 2-wire RS485 communication with support for auto flow control. And
COM 3 provides standard RS232 communication.
Serial Port
Panel Backlight/SATA
Power
5
1
DC-in
USB 1-2
USB 2.0
1
10
9
2
JTAG
Mini
PCIe
Battery
1
1
9
DIO
Debug
1
4
DDR3L
DDR3L
Debug
LED
1
5
2
USB 3
USB 2.0
USB OTG
COM 1
HDMI
LAN
2
LAN
1
COM 1: RS485
1 2
RS485+
RS485-
6 7 8
1 2 3 4 5
DCD RXD TX
D
DT
R
GND
DSR RT
S
CTS
Front
Panel
COM 3
1
microSD
eMMC
1
5
NXP
i.MX6
Cortex-A9
Boot Mode/Device Select
(SW5)
ON
1 2 3 4 5 6 7 8
5
9
I C
2
1
LVDS LCD Panel
1
14
DDR3L
DDR3L
COM 3: RS232
2
1
9
Panel B
acklight/SATA
Power
5
1
D
C-in
USB
1-2
USB
2.0
1
10
9
2
JTAG
Mini PCIe
Bat
tery
1
1
9
D
IO
Debug
1
4
DDR3L
DDR3L
Debug LE
D
1
5
2
USB
3
USB
2.0
USB
OTG
COM 1
HDMI
LA
N
2
LA
N
1
USB 2.0
COM 1
COM 3
