6.3
DIP Switches
There are two configuration switches on the Mars EB1 base board: CFG A and CFG B. Tables 22 and 23
describe their function; the factory default is marked in bold.
For details on the board configuration, refer to the Mars EB1 Base Board User Schematics [5].
DIP
Switch
Signal Name
CFG A 1
BOOT_MODE0
CFG A 2
USB_PWR_EN#
CFG A 3
SDIO_SEL
CFG A 4
PWR_ON#
Table 22: S1201 - Configuration Switch A
D-0000-307-001
Pos.
Effect
OFF
BOOT_MODE0 is set to 1
ON
BOOT_MODE0 is set to 0
OFF
Power over USB OFF
ON
Power over USB ON
OFF
SD card active
ON
MMC pins active
OFF
Power control ON
ON
Power control OFF
29 / 39
Comments
Refer to the Mars module
user manual
Refer to Section 5.2
SDIO_SEL is set to 1: the SDIO
signals from module connector
are routed to the SD card
SDIO_SEL is set to 0: the SDIO
signals from module connector
are routed to the MMC pins
Refer to Section 5.3
Version 06, 22.07.2021
Need help?
Do you have a question about the Mars EB1 Base Board and is the answer not in the manual?