5: Carrier Board
Snapdragon 845 HDK Hardware Development Kit User Guide
19
5.1 Dip switch Configuration Options
There is one DIP switch S2301 on the south top side of the HDK845 carrier board. The 8-bit switch allows the
user to control the system configuration and boot options. Table below outlines
Table 5-2 Dip Switch S2301 HW / SW Configuration
Function
DIP Switch
Description
Notes
FORCED_USB_BOOT
S2301-1
Toggles between FORCE
USB boot and EDL mode.
Enables FOCE USB
(GPIO 57) when DIP
Default out of the box
configuration is OFF
WATCHDOG _DISABLE
S2301-2
Enables
WATCHDOG_DISABLE
when DIP switch turned
on. Controlled by SDA-
GPIO 101
Default out of the box
configuration is OFF
BOOT_CONFIG[1]
S2301-3
Enables SDA boot
configuration 1 when DIP
switch turned on.
Controlled by SDA-GPIO
99
Default out of the box
configuration is OFF
BOOT_CONFIG[2]
S2301-4
Enables SDA boot
configuration 2 when DIP
switch turned on.
Controlled by SDA-
GPIO100
Default out of the box
configuration is OFF
BOOT_CONFIG[3]
S2301-5
Enables SDA boot
configuration 3 when DIP
switch turned on.
Controlled by SDA
GPIO133
Default out of the box
configuration is OFF
N/C
S2301-6
NA
NA
DSI0_SW_SEL(Reserve)
S2301-7
Select DSI0 data path
between display card and
HDMI
Default route DSI0 to
display card
Default out of the box
configuration is OFF
This DIP is default
disabled.
DSI0 data path is default
simultaneously
controlled by S2301-8.
To separately control
DSI0 path with this DIP
needs HW change (DNI
R3404, SMT R3403).