SoM-112ES User Manual
Revision 1.00 © 2018
- 6 -
2.2
Jumper Configuration & Connector Descriptions
The SoM-112ES is factory configured. In the event that jumpers need to be verified or modified this
section provides the information required, including instructions on setting jumpers and connecting
peripherals, switches and indicators. Be sure to read all the safety precautions before you begin any
configuration procedure. See Appendix A for connector pinouts and Appendix B for Jumper Settings.
Table 1: Connectors
Label
Function
CN1
4-Pin Molex Male Floppy Power Connector
CN2
3-Pin Polarized Locking CAN Connector
HDR1
Utility GPIO Header
HDR2
RS-232 Serial Port COM A Header
HDR3
RS-232/422/485 Serial Port COM B Header
JK1
Audio Input Jack
JK2
Audio Output Jack
JK3
Serial Port COM E
JK4
Micro USB 2.0 Console Interface Connector
JK5
USB Host Port B
JK6
USB Host Port A1 & A2
JK7
USB Device Port C
JK8
Single Port Ethernet Connector
JK9
WiFi Antenna Connector
JK10
Vin Power Barrel Jack
SOK1
144 Pin SoM Socket
SOK2
MikroBUS Socket
SOK3
Micro SD Card Socket
Table 2: Jumpers
Label
Function
Default
JB1
Boot0 Source Selection
Position A
JB2
Boot1 Source Selection
Position A
JB3
Flash Write Protect
Position A
JB4
Standby Battery
ON
JB5
External SPI Interface Voltage
3.3V
JB6
External I2C Interface Voltage
3.3V
JB7
Serial Port RS-232 or RS-422/485
232
JB8
Serial Port RS-422 or RS-485
422
JB9
USB Device Port C Enable
Position B
