AM6421: MCU_OSC0_X0

David Hollinrake

Part Number: AM6421

I am driving MCU_OSC0_XI with a clock buffer. I missed the requirement in the datasheet to connect MCU_OSC0_XO to PCB Ground. Will the clock input work without this connection to PCB Ground?

over 2 years ago

0 peaves over 2 years ago

TI__Guru 55265 points

It may work sometimes, but you are likely to have problems. The oscillator uses a differential input buffer to create the internal reference clock, where the differential inputs are ac-coupled to the XI and XO pins. So not connecting the XO pin leaves one input of the differential inputs of the buffer floating.

Regards,
Paul

0 Karim Jamal over 2 years ago in reply to peaves

TI__Expert 5435 points

will be considered - Thank you

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AM6421: MCU_OSC0_X0