MBa53 DIP switch settings
Configuration DIP swich S1
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 |
Boot Device Selection (S2 & S3)
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
Functional DIP Switches
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) |