Boot Configuration Select

[muratünal]

Hi,

I am preparing a schematic which includes imx6 DualLite. I want to ask a question about Boot Configuration Selection.

In Sabre board, when BootMode0 = 0 and BootMode1 = 1, CPU decides Boot Config registers which are delegated from GPIO pins (EIM interface pins). I won't use EIM interface. I will put the same dipswitch (SW6) like SABRE. I don't want to put all series, pull down and pull up resistors like SABRE. My questions are:

* Are these series resistors (4.7K) necessary? I think this resistors are not necessary when I don't use EIM interface? Am I right?

* In SABRE board, BT_CFG3 and BT_CFG4 pins are pulled down via series resistors (4.7K) and 10K resistors. If I don't use these pins, can I connect them directly to the GND or left open? If yes, which one is more meaningful?

[igorpadykov]

Hi Murat

yes, when EIM not used one can remove series resistors.

BT_CFG3 and BT_CFG4 pins can be connected to ground if

necessary. It is not recommended to left them unconnected due to

big internal pull resistor value.

Best regards

chip

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