SoM-112ES User Manual
Revision 1.00 © 2018
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2.3
Power Connectors
The SoM-112ES provides two power connectors. JK10 is a standard 5.5mm barrel jack with an inner
diameter of 2.1mm with a center V+ connection and has an operating temperature of -25 ~ 85°C.
This
jack allows for an easy connection to a wall mount power supply (EMAC part number PER-PWR-00032).
An alternative power connector is located at CN1 and is an On-Shore Technology locking power
connector (part# 254B5V1040). This power input provides a more rugged/industrial locking connection
with an operating temperature of -25 ~ 85°C.
Table 3: Pin-out for Power Connector (CN1)
Pin
Signal
Pin 1
5V
Pin 2
GND
Pin 3
GND
Pin 4
12V
2.4
Ethernet
The SoM-112ES provides one 10/100 Base-T full duplex Ethernet and uses a standard single port RJ-45
LAN jack (JK8) with integrated magnetics. It can be connected straight to a hub, or another computer
via Ethernet crossover cable. The Ethernet crossover cable can be replaced with a patch cable if the SoM
processor module supports the Auto MDI-X capability. The Ethernet MAC & PHY are integrated into the
SoM processor module. Activity and Link LEDs are integrated into the RJ45 connector.
2.5
Serial Ports
The SoM-112ES is equipped with four serial ports, two that terminate to 10-pin header connectors
(COM A & B), one of which terminates to a male DB9 connector (COM C), and one USB to Serial console
port that terminates to a micro USB 2.0 B connector (COM E). COM D is dedicated to the Bluetooth
Radio. Baud Rates, stop bits, etc. are all programmable for each port via software.
Serial Port COM A is a RS232 port. This port offers RXD/TXD without handshaking lines
terminating to a 10-pin header.
Table 4: Serial Port COM A (HDR2)
Pin
RS-232 10-Pin Header: Description
1
NC
2
NC
3
COMA_RX232
4
NC
5
COMA_TX232
6
NC
7
NC
8
NC
9
GND
10
NC
