MBa53 DIP switch settings

To enable boot device selection BOOT_MODE has to be set to “Internal Boot”.
This can be done using DIP switch S1 on MBa53:

Boot Mode

BOOT_MODE S1-1 S1-2
Boot from eFuses 1 0
Serial Downloader 1 1
Internal Boot 0 0

To select the desired boot medium set the DIP switches S2 and S3 accordingly. The following boot modes of the i.MX53 can be selected by the DIP switches S2 and S3 on the MBa53.

SD-Card

S2

S3

eMMC

S2

S3


Configuration DIP switch S2

DIP switch S5 is used to configure the CAN interfaces CAN1 and CAN2.

DIP OFF ON
S2-1 CPU Frequency 800 MHz CPU Frequency 400 MHz
S2-2 MMU/Cache is disabled by ROM during the boot MMU/Cache is enabled by ROM during the boot
S2-3 200 MHz AXI / 400 MHz DDR 166 MHz AXI / 333 MHz DDR
S2-4 19,2, 24, 26, 27 MHz Auto Detection OSC Frequency 24 MHz

CAN configuration (S2)

DIP switch S2 is used to configure the CAN interfaces CAN1 and CAN2.

DIP OFF (default) ON
S2-1 CAN1 not terminated CAN1 terminated (120Ω)
S2-2 CAN2 not terminated CAN2 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