AWR1243: A question about rlDeviceDisable and rlDeviceEnable in the DFP example

huangyaohui

Part Number: AWR1243

Hello!

I want to know the both functions of rlDeviceDisable and rlDeviceEnable how to control the awr1243, is only control the nRESET signal or control the nRESET signal and PMIC enable signal?

Thank you for the help in advance.

over 5 years ago

0 Jitendra Gupta over 5 years ago

TI__Guru 69490 points

Hi,

mmWaveLink uses these callbacks (rlDeviceEnable and rlDeviceDisable) to power on and off the AWR1243 from the External Host.

Now implementation may differ based on your hardware connection (Host+AWR1243).

Ideally just taking nRESET high/low should be enough to switch ON/OFF the device but if you PMIC enable line connected to Host where it can control it then add this also in these callback implementations. Only precaution that after PMIC enable is high there should be some delay to nReset toggle so that all the power rails are stabled by that time.

Refer AWR1243 datasheet for device wakeup sequence (section 5.9.1)

http://www.ti.com/lit/ds/symlink/awr1243.pdf

Regards,

Jitendra

0 huangyaohui over 5 years ago in reply to Jitendra Gupta

Intellectual 520 points

Thanks for your answer. If AWR1243 is in reset state a long time, what dose it happen？Will it indicate error?

0 Jitendra Gupta over 5 years ago in reply to huangyaohui

TI__Guru 69490 points

Hi,

If device is in reset state (nRESET low) then it will be in OFF state, so it won't throw any error.

Regards,

Jitendra

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AWR1243: A question about rlDeviceDisable and rlDeviceEnable in the DFP example