Som Board To Board Connectors (33); Boot Configuration Dip Switch S2500 (37); Figure 3. Dip Switch Assignments - Lantronix Intrinsyc Open-Q 865XR SOM User Manual

Item Position
Current Sense
Header (VPH_PWR)
Current Sense
Header
(SOM_SYS_PWR)
M.2 PCI Express
Connector (on
bottom)
WWAN SIM Card
(on bottom)

3.7.1 SOM Board to Board Connectors (33)

The Open-Q 865XR SOM connects to the carrier board via two 100 pin and one 120 pin Hirose DF40
connectors which allows essential power rails and signals to be exposed for supporting other peripherals
and interfaces on the platform. For the list of signals exposed by the SOM, see the device specification
(Ref. R-1).

3.7.2 Boot Configuration DIP Switch S2500 (37)

There is a DIP switch S2500 and one 2pins header on the top side of the Open-Q 865XR SOM carrier
board. The 2-bit switch allows the user to control the system configuration and boot options. The 2pins
header is for Force USB Boot mode select. The image below shows the DIP switch and header
assignments.
See the table below for a description of the DIP switch and header connections.
Open-Q 865XR SOM Development Kit User Guide
Description
35 3 pin header
39 3 pin header
24 M.2 PCI Express for external
peripheral connectivity
25 WWAN SIM card connector
(optional)

Figure 3. DIP switch assignments

3: Open-Q 865XR SOM Development Kit
Specification
be used by the dev kit
user.
Sense lines connected To measure current
across 0.005 Ohm consumption of
resistor SOM_VPH_PWR
Sense lines connected To measure current
across 0.005 Ohm consumption of
resistor SOM_SYS_PWR
M.2 PCI Express B-Key For external M.2 PCIe
interface. card
For WWAN M.2 PCI
express cards
Usage
18