3: Open-Q 845 µSOM Development Kit
Open-Q 845 µSOM Development Kit User Guide
17
Item
Position
Description
Specification
Usage
Audio Inputs
Expansion
27
Audio Inputs Header
3 Analog Differential Inputs,
3 PDM Input Interfaces with
phantom power
Microphones
Audio Outputs
Expansion
26
Audio Outputs Header
2 Line outputs, 1 earphone
amplifier output, 1
Soundwire interface
Amplifiers
Audio I/O
10
Audio I/O headers
3 x I2S, 1x Analog
Differential Input
Various audio I/O
functions
Haptic motor header
9
Haptic device driver
LRM and ERA capable
output driver
Haptic motor
Micro SD (on bottom)
22
Micro SD card
4bit Micro SD card support
External Storage
USB Type C
11
USB 3.1 type C connector
For USB debugging and
client / host mode
USB Type A
5
Female Type A Connector
USB 3.1 Host interface
WLAN Antennas
13, 14
2 PCB Antennas
Coax connection to SOM
WiFi module
Coin Cell Holder
30
Coin Cell battery holder provided
for PMIC RTC
LEDs
36
Five LEDs
Three user driven LEDs
LCD Display and
Touch connector
38
100 pin for LCD signals
2x 4-lane MIPI DSI
MIPI Alliance Specification
for DPHY v1.2
For connecting display
accessory
CSI Camera
connectors
15, 16, 17,
18
4x camera connectors
MIPI Alliance Specification
for CSI-2 v1.3
For connecting camera
accessories.
Flash driver
19, 20
2 x Flash drivers
Low current flash driver
control
Flash control
Current Sense Header
35
3 pin header
Sense lines connected
across 0.005 Ohm resistor
To measure current
consumption of SOM
Mini PCI Express
Connector (on
bottom)
24
Mini PCI Express for external
peripheral connectivity
PCI Express Gen3 interface.
Can support half or full size
card
For external mini PCIe card
WWAN SIM Card (on
bottom)
25
WWAN SIM card connector
(optional)
For WWAN mini PCI
express cards
3.7.1
SOM Board to Board Connectors (33)
The Open-Q 845 µSOM connects to the carrier board via three 100 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 S2600 (37)
There is a DIP switch S2600 on the top side of the Open-Q 845 carrier board. The 8-bit switch allows the
user to control the system configuration and boot options. The image below shows the DIP switch
assignments.
