SoM-250ES_User_Manual_v1.40.doc
-4-
Rev 1.4 © 2014 EMAC, Inc.
2
SoM-250 Product Details
2.1
Jumper Configuration & Connector Descriptions
The SoM-250 comes 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: Jumpers (see SoM manual for correct Boot settings)
Label
Function
Default
JB1
Boot0 Source Selection
Position B
JB2
Boot1 Source Selection
Position A
JB3
Resident Flash Write Protect
Position B
JB4
RTC Battery ON/OFF
Off
JB5
Serial Port RS422/485 Tx Enable
422
JB6
Serial Port RS232 or 422/485 Mode
232
Table 2: Connectors
Label
Function
CN1
7” Touch Screen Connector
CN2
Serial Port COM A
CN3
10” Touch Screen Connector
CN4
7” LCD Backlight Connector
CN5
CAN Port
CN6
7” LCD Data Connector
J1
Vin Locking Connector
JK1
Vin Power Barrel Jack
JK2
Ethernet
JK3
USB Host Port A & B
JK4
USB OTG Port C
JK5
Audio Input Jack
JK6
Audio Output Jack
HDR1
Misc. I/O Connector
HDR2
Serial Port COM D
HDR3
Serial Port COM B
HDR4
Serial Port COM C
HDR5
Bulkhead USB Connector Port A & B
HDR6
LVDS & Touch Signal Connector
SOK1
MicroSD Card Socket
SOK2
200 pin SOM Socket
ABJ1
PCD-E12 Expansion Module Connector
