DIP Switches, Ports and Interfaces - Qualcomm Dragonwing Documentation

DIP Switches

The following images show the location of the DIP switches on the mainboard.

All functions on the mainboard operate with no DIP switch changes. The large red switch is for EDL/Fastboot; the smaller switches below are for mezzanines.

Switch	Connection when ON	Connection when OFF (factory default)
SW1-1	PCIe0 routed to mezzanine	PCIe0 connected to mainboard Wi-Fi module
SW1-2	PCIe1 routed to mezzanine	PCIe1 connected to mainboard PCIe connector
SW1-3	SDIO routed to mezzanine	SDIO routed to mainboard SD card
SW1-4	DSI routed to mainboard flex connector	DSI routed to mezzanine
SW1-5	CSI0 routed to mezzanine	CSI0 routed to mainboard CSI flex connector
SW1-6	CSI1 routed to mezzanine	CSI1 routed to mainboard CSI flex connector
SW1-7	CSI2 routed to mezzanine	CSI2 routed to mainboard CSI flex connector
SW2-1	Main domain forced USB boot/EDL	No impact
SW2-2	Main domain fast boot	No impact
SW2-3	Main domain and Sail domain forced USB boot/EDL (combined)	No impact
SW2-4	Sail domain Fastboot mode	No impact
SW3-1	OSPI routed to mezzanine	OSPI connected to onboard memory for MCU
SW3-2	Force MD and MCU PS_HOLD	No impact
SW3-3	Watchdog disabled	RAM dump enabled
SW3-4	Boot from eMMC (located on interface and mezzanine)	Boot from UFS
SW3-5	EUD enable	No impact
SW3-6	Skip MD BIST	No impact
SW4-1	PWM-MODE for fan set to low	PWM-MODE for fan set to high
SW7-1	RGMII voltage select 2.5V	RGMII voltage select 1.8V
SW8-1	USB to M.2 connector for NFA765 module on mezzanine	USB to M.2 connector for NFA765 module on mainboard
SW9-1	SAIL CAN GPIOs routed to mezzanine	SAIL CAN GPIOs routed to JLS1 connector

SW2-1 is not enabled in software. SW2-3 puts both domains into EDL mode simultaneously — required for software download.

Other Buttons and Switches

The side-mounted slide/toggle switch (position 25) is the main power on/off control. To power cycle or reset the device, flip the switch — no button press or hold is required.

A small push button (position 26) is currently inactive. It is connected to GPIO 6 and reserved for a future software feature.

​Ports and Interfaces

​DIP Switches

​Other Buttons and Switches

Ports and Interfaces

DIP Switches

Other Buttons and Switches