CDCE62002 Pin Connection - Ref -, Pin 30

shadders

Hi,

For the PCB i have designed and had fabricated, connected Pin 30 (Ref -) to high logic level through a 10kohm resistor - this was in error.

The datasheet states that this pin must be pulled down.

I have connected a crystal oscillator to Pin 29.

I can see the inverted logic symbol on the pin in figure 22.

Hence, with Pin 30 pin connected to a high logic level, does this stop the Ref + Pin 29 functioning as an input ?.

Thanks and regards,

Richard.

over 14 years ago

0 Luke LaPointe over 14 years ago

TI__Genius 13335 points

No, the device should be functioning with this setup.

0 shadders over 14 years ago in reply to Luke LaPointe

Expert 1065 points

Hi Luke,

Thanks for the reply - i have modified one board to pull the pin down with a 22kohm resistor, that was previously pulling the pin high - this will save a bit of work on the other 4 PCB's - surface mount components are great when it is all going right,......

Regards,

Richard.

Clock & timing

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CDCE62002 Pin Connection - Ref -, Pin 30