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LMX2571: unused pin

toshi-e2e
Genius 4830 points

Hi all, 
Could you please tell me how to handle below unused pins？

FSKDx:        
OSC*:           When Single end configuration 
TrCtl:            When RXTX_CTRL=0
FLout1/2:
CPoutExt:    When the external VCO is not used
RFoutTx:     

Thanks in advance.
Regards,
Toshi

  • 0
    TI__Guru** 106970 points
    Hi Toshi,

    if you do not use FSK Pin mode or FSK I2S mode, you can leave FSK_Dx pins floating.
    OSCin* could be left floating for single-ended input.
    TrCtl, FLout1/2, CPoutExt can be left floating if you do not use them.
    RFoutTx, if your configuration is push-pull output, leave it floating if not being used.