====== MBa53 DIP switch settings ======

===== Boot Device Selection (S2 & S3) =====

To select the desired boot medium set the DIP switches S2 and S3 accordingly.

{{ :en:arm:tqma53:mba53:mba53_s2_s3.png?nolink&500 |}}

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


The following boot modes of the i.MX53 can be selected by the DIP switches S2 and S3 on the MBa53.

==== SD card ====
^ |  ^ {{ :en:arm:tqma53:mba53:mba53_s2_sd.png?nolink&100 |}}||||||||  ^{{ :en:arm:tqma53:mba53:mba53_s3_sd.png?nolink&100 |}}||||||||  
^ DIP |::: ^  S2-1  ^  S2-2  ^ S2-3 ^ S2-4  ^  S2-5  ^  S2-6  ^  S2-7  ^  S2-8 | :::  ^  S3-1  ^ S3-2 ^  S3-3  ^  S3-4  ^  S3-5  ^  S3-6  ^  S3-7  ^ S3-8  | 
^  ON  |:::  |     |     |     |     |     |  •  |     |     | ::: |     |     |     |  •  |   |  •  |    |    | 
^  OFF  |::: |  •  |  •  |  •  |  •  |  •  |     |  •  |  •  | ::: |  •  |  •  |  •  |     |  •  |    |  •  |  •  | 



==== On-board eMMC ====
^ |  ^ {{ :en:arm:tqma53:mba53:mba53_s2_emmc.png?nolink&100 |}}||||||||  ^{{ :en:arm:tqma53:mba53:mba53_s3_emmc.png?nolink&100 |}}||||||||  
^ DIP |::: ^  S2-1  ^  S2-2  ^ S2-3 ^ S2-4  ^  S2-5  ^  S2-6  ^  S2-7  ^  S2-8 | :::  ^  S3-1  ^ S3-2 ^  S3-3  ^  S3-4  ^  S3-5  ^  S3-6  ^  S3-7  ^ S3-8  | 
^  ON  |:::  |     |     |     |     |     |  •  |  •  |     | ::: |     |     |  •  |     |  •  |     |     |     |
^  OFF  |::: |  •  |  •  |  •  |  •  |  •  |     |     |  •  | ::: |  •  |  •  |     |  •  |     |  •  |  •  |  •  | 



----

===== Configuration DIP switch S2 =====

^DIP ^ OFF ^ ON ^
| S2-1 | ARM Frequency 800 MHz | ARM 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 (S10) =====
DIP switch S1 is used to configure the CAN interfaces CAN1 and CAN2.

{{.:STK-MBa28_S1_overview.jpg?500  |}}

<WRAP clear></WRAP>
<WRAP group>
<WRAP centeralign half column>
==== Termination ====
^ DIP  ^ OFF (default)  ^  ON  ^
| S10-1 | CAN1 not terminated  | CAN1 terminated (120Ω)  |
| S10-2 | CAN2 not terminated  | CAN2 terminated (120Ω)  |
</WRAP>


</WRAP>
<WRAP clear></WRAP>

----
===== RS485 configuration (S4) =====
DIP switch S4 is used to configure the RS485 interface.

{{.:STK-MBa28_S3_overview.jpg?500  |}}

<WRAP clear></WRAP>
<WRAP group>

<WRAP centeralign half column>
==== Termination ====
^ DIP  ^ OFF (default)  ^  ON  ^
| S4-1 | RS485 RxD not terminated     | RS485 RxD terminated (120Ω)  |
| S4-2 | RS485 TxD not terminated     | RS485 TxD terminated (120Ω)  |
</WRAP>
</WRAP>