MBa28 DIP switch settings

Boot Device Selection (S4 & S5)

To select the desired boot medium set the DIP switches S4 and S5 accordingly.

The following boot modes of the i.MX28 can be selected by the DIP switches S4 and S5 on the MBa28.


	S4				S5
DIP	1	2	3	4	1	2	3	4
ON				•	•	note see STK-MBa28 User's Manual, Table 69	•	N/A
OFF	•	•	•			note see STK-MBa28 User's Manual, Table 69		N/A

It is not possible to boot from SD card with the following Hardware combination TQMa28-A[C,D,E] Rev.02XX and MBa28 ≤ Rev.0105


	S4				S5
DIP	1	2	3	4	1	2	3	4
ON						note see STK-MBa28 User's Manual, Table 69		N/A
OFF	•	•	•	•	•	note see STK-MBa28 User's Manual, Table 69	•	N/A


	S4				S5
DIP	1	2	3	4	1	2	3	4
ON		•			•	note see STK-MBa28 User's Manual, Table 69		N/A
OFF	•		•	•		note see STK-MBa28 User's Manual, Table 69	•	N/A

DIP switch S1 is used to configure the CAN interfaces CAN1 and CAN2.

DIP	OFF (default)	ON
S1-1	CAN1 terminated (120Ω)	CAN1 not terminated
S1-2	CAN2 terminated (120Ω)	CAN2 not terminated

DIP	OFF (default)	ON
S1-3	CAN1 slew rate configuration disabled	CAN1 slew rate configurable by assembling R282
S1-4	CAN2 slew rate configuration disabled	CAN2 slew rate configurable by assembling R281

DIP switch S3 is used to configure the RS485 interface.

DIP	OFF (default)	ON
S3-1	No function	No function
S3-2	DEBUG = GND	DEBUG = TQMa28 PU

DIP	OFF (default)	ON
S3-3	RS485 RxD terminated (120Ω)	RS485 RxD not terminated
S3-4	RS485 TxD terminated (120Ω)	RS485 TxD not terminated