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TLIN1431-Q1: TLIN14315-Q1 transition from stand by mode to normal mode using wake line

Loredana Onea
Prodigy 10 points
Part Number: TLIN1431-Q1

Tool/software:

Hello,

 

I am using TLIN14315-Q1 configured by SPI mode, and I have a question regarding stand by mode.

I want to use the standby mode to have the VCC line active but I want to know if is possible to go from stand by mode to normal mode using wake line.

In the following diagram (Figure 8-25) it looks that we can only go from stand by to normal mode using SPI command.

 

In the stand by mode chapter (Figure 8-37)  the wake functionality is mentioned but is not clear for me how can I use it.

 

My question is: Can we transit from stand by mode to normal mode using wake line ?

  • 0
    TI__Mastermind 27860 points

    Hi Loredana, 

    No, the only way to change mode from standby to normal is using SPI. The WAKE pin can only be used as a local wake up event to exit sleep or failsafe mode.

    Regards,

    Sean

  • 0
    Prodigy 10 points

    Hello,

    Thank you for your response. 

    I have one additional question for you.

    It is possible to generate an interrupt in standby mode, when the WAKE pin is pulled down, via pin nINT?

    In this way, I could wake up the microcontroller and afterwards send the SPI_CMD to also wake up the SBC.

    If this is possible, which are the registers to be controlled and with what values?

    Thank you.

  • 0 in reply to Loredana Onea
    TI__Mastermind 27860 points

    Hi Loredana,

    Yes that's possible, this can generate a LWU interrupt in INT_1 register (51h). The LWU flag will set to 1.

    In this case when the LWU flag is set, the transceiver will stay in standby mode, so your MCU need to send a SPI command for the standby mode to normal mode transition.

    Regards,

    ean