Open-Q™ 624A Development Kit
Open-Q™ 624A Development Kit User Kit
19
3.8.1 Open-Q™ 624A Carrier Board Expansion Connectors
The following sections will provide in depth information on each expansion header and connector on the
carrier board. The information listed below is of particular use for those who want to interface other external
hardware devices with the Open-Q™ 624A. Before connecting anything to the development kit, please ensure
the device meets the specific hardware requirements of the processor.
3.8.2 Dip switch S10 Configuration Options
There is a DIP switch S10 on the top side of the Open-Q™ 624A carrier board. The 8-bit switch allows the
user to control the system configuration and boot options. Table 3-3 below outlines the pin outs and
connections of these DIP switches.
Table 3-3 Dip Switch HW / SW configuration
Function
DIP
Switch Description
Notes
GPS_CTRL1
S10-1
Configures GPS antenna from external SMA
connector to onboard PCB antenna.
Default out of the box configuration is
OFF, or PCB antenna selected.
FORCED_USB_BOOT S10-2
Enables FORCE USB (GPIO 37) when DIP
switch turned on
Default out of the box configuration is OFF
Note:
FORCE USB boot option not
supported by Lantronixc
BOOT_CONFIG[3]
S10-3
Enables APQ boot configuration 3 when DIP
switch turned on. Controlled by APQ GPIO109
See schematic for boot configuration options.
NOTE: Some boot configurations are not
supported on the development kit.
Default out of the box configuration is OFF
BOOT_CONFIG[2]
S10-4
Enables APQ boot configuration 2 when DIP
switch turned on. Controlled by APQ-GPIO107
Default out of the box configuration is OFF
BOOT_CONFIG[1]
S10-5
Enables APQ boot configuration 1 when DIP
switch turned on. Controlled by APQ-GPIO 113
Default out of the box configuration is OFF
BOOT_CONFIG[0]
S10-6
Enables APQ boot configuration 0 when DIP
switch turned on. Controlled by APQ-GPIO 106
Default out of the box configuration is OFF
DMIC_DISC_N
S10-7
Disable (switch OFF) or Enable (switch ON) on-
board DMICS
Default out of the box configuration is OFF
FORCE_SW_UART
S10-8
Option to select between use of DEBUG UART
@ USB connector J22 (switch OFF) or onboard
DMICs (switch ON)
Default out of the box configuration is OFF
Warning!
Before making any changes to the dip switch, make sure to note down the previous configuration.
More details on boot configurations can be found in the Open-Q™ 624A SOM Device Specification document
