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MCU-PLUS-SDK-AM243X: Pin Configuration during Reset

Robin Bross
Prodigy 233 points
Part Number: MCU-PLUS-SDK-AM243X
Other Parts Discussed in Thread: AM2432, SYSCONFIG

Dear TI Experts,

we are currently looking into the configuration of the Reset Pins of the AM2432 on our custom board.

According to the reference manual, there is a possibility to configure the behavior of reset pins (maybe the pins in general?) via software.

Is there any example how to do this? 
How is this configuration applied, if the chip is held in reset? 

An Example is the pin: RESETSTATZ, F16

Thanks in Advance, best regards

Robin 

  • 0
    TI__Expert 3210 points

    Hi Robin,

    From what I am understanding, you want to configure the functionality of device pins/pad.
    Each pin/pad can be configured by writing values to corresponding Pad configuration Register.
    eg: RESETSTATZ pin corresponds to PADCONFIG169 -> Address:0x000F42A4

    Description of pad configuration register is provided in section 5.1.1.4 Pad Configuration Registers in AM243-TRM.

    For pinmuxing alone you could also use sysconfig tool.
    Sample codes are available in SDK examples (www.ti.com/.../MCU-PLUS-SDK-AM243X)

    All the pins are configured initially with Mux Mode listed in "Mux mode After Reset" column of Pin Attributes section of the datasheet.

    Thanks & Regards,
    Rijohn

  • 0 in reply to Rijohn Pius
    Prodigy 233 points

    Hello Rijohn,

    thank you for your message.

    I'm asking especially for a possibility to configure the behavior of the pins/pad during a device reset.
    E.g. Pull up/Pull down during reset.

    Is there any possibility to influence the behavior of the pad during reset this? 

    Thanks & Regards

    Robin

  • +1 in reply to Robin Bross
    TI__Expert 3210 points

    Hi Robin,

    It is not possible to influence the behavior of the pad during Reset (via software).
    But you could do pinmux /pad configuration from SBL/Application only after deassertion of RESET.

    Could you please elaborate the term "during reset".
    Also, could you educate us on what use-case you are implementing.

    Thanks & Regards,
    Rijohn

  • 0 in reply to Rijohn Pius
    Prodigy 233 points

    The question from our HW Department is, if they can configure e.g. Pull Up or Pull down resistors, to have a defined behavior of the pads during reset (Power Up, Power Down). 

    If I understand you correct, this is not possible so the question is resolved here.