MBa6ULx DIP switch settings

Switching boot sources is only possible if the BOOT_MODE fuses are not programmed. If configured for “Boot from eFuses” but fuses are not programmed, the boot loader will not be able to determine the boot source.

To enable boot device selection BOOT_MODE has to be set to “Internal Boot”.
This can be done using DIP switch S5 on MBa6ULx:

MBa6ULx Rev.0200

BOOT_MODE S5-1 S5-2
Boot from eFuses 0 0
Internal Boot 0 1
Serial Downloader 1 0
Reserved 1 1

MBa6ULx Rev.01xx

BOOT_MODE S5-1 S5-2
Boot from eFuses 0 0
Internal Boot 1 0
Serial Downloader 0 1
Reserved 1 1

The i.MX6ULx can boot from the following boot devices, which can be selected by the DIP switches S11, S12 and S13.

MBa6ULx Rev.0200

S5

S11

S12

S13



S5

S11

S12

S13



S5

S11

S12

S13



MBa6ULx Rev.01xx

S5

S11

S12

S13



S5

S11

S12

S13



S5

S11

S12

S13




DIP-Switch settings for CAN and RS485.

CAN configuration (S3)

DIP switch S3 is used to configure the CAN interfaces CAN1 and CAN2.

DIP OFF (default) ON
S3-1 CAN1 not terminated CAN1 interface terminated (120Ω)
S3-2 CAN0 not terminated CAN0 interface terminated (120Ω)

RS485 configuration (S4)

DIP switch S4 is used to configure the RS485 interface.

DIP OFF (default) ON
S4-1 RS485 RxD not terminated RS485 RxD terminated (120Ω)
S4-2 RS485 TxD not terminated RS485 TxD terminated (120Ω)

  • Last modified: 2022/08/04 15:02