Table of Contents
MBa91xxCA DIP switch settings
Boot Devices
The following boot modes of the i.MX 91 can be selected by the DIP switch S1 on the MBa93xxCA.
SD-Card
S1
eMMC
S1
QSPI NOR
S1
Serial Downloader
S1
Functional DIP Switches
DIP-Switch settings for Boot and CAN / RS485.
Boot Configuration (S1)
DIP switch S1 is used to configure the BOOT_MODE Pins.
| DIP | Signal Name | OFF | ON |
|---|---|---|---|
| S1-1 | BOOT_MODE0 | LOW | HIGH |
| S1-2 | BOOT_MODE1 | LOW | HIGH |
| S1-3 | BOOT_MODE2 | LOW | HIGH |
| S1-4 | BOOT_MODE3 | LOW | HIGH |
CAN1 configuration (S4)
DIP switch S4 is used to configure the CAN interfaces CAN1.
| Funktion | S4-1 | S4-2 |
|---|---|---|
| CAN-Bus not terminated | OFF | OFF |
| not defined (illegal state) | OFF | ON |
| not defined (illegal state) | ON | OFF |
| CAN-Bus terminated with 120 Ohm | ON | ON |
RS485 configuration (S6)
DIP switch S6 is used to configure the RS485 interface.
| Funktion | S6-1 | S6-2 |
|---|---|---|
| CAN-Bus not terminated | OFF | OFF |
| not defined (illegal state) | OFF | ON |
| not defined (illegal state) | ON | OFF |
| CAN-Bus terminated with 120 Ohm | ON | ON |