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MBa7x DIP switch settings
Boot Device Selection (S1, S2, S3 & S4)
To select the desired boot medium set the DIP switches S2, S3, S4 and S1 accordingly.
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
S1 on MBa7x:
| BOOT_MODE | S1-1 | S1-2 |
|---|---|---|
| Boot from eFuses | 0 | 0 |
| Serial Downloader | 0 | 1 |
| Internal Boot | 1 | 0 |
The following boot modes of the i.MX7 can be selected by the DIP switches S1, S2, S3 and S4 on the MBa7x.
SD Card
| S2 | S3 | S4 | S1 | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  |  |  |
|||||||||||||||||||||||
| DIP | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 | 4 | 1 | 2 | ||||
| ON | • | • | • | • | ||||||||||||||||||||||
| OFF | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | ||||||||
eMMC
| S2 | S3 | S4 | S1 | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  | | |
|||||||||||||||||||||||
| DIP | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 | 4 | 1 | 2 | ||||
| ON | • | • | • | • | ||||||||||||||||||||||
| OFF | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | ||||||||
SPI NOR
| S2 | S3 | S4 | S1 | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  | | |
|||||||||||||||||||||||
| DIP | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 | 4 | 1 | 2 | ||||
| ON | • | • | ||||||||||||||||||||||||
| OFF | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | • | ||||||
CAN configuration (S5)
DIP switch S5 is used to configure the CAN interfaces CAN1 and CAN2.
Termination
| DIP | OFF (default) | ON |
|---|---|---|
| S5-1 | CAN1 not terminated | CAN1 interface terminated (120Ω) |
| S5-2 | CAN2 not terminated | CAN2 interface terminated (120Ω) |
RS485 configuration (S6)
DIP switch S6 is used to configure the RS485 interface.
Termination
| DIP | OFF (default) | ON |
|---|---|---|
| S6-1 | RS485 RxD not terminated | RS485 RxD terminated (120Ω) |
| S6-2 | RS485 TxD not terminated | RS485 TxD terminated (120Ω) |
- Last modified: 2022/08/04 15:04