CDCDB803: CKPWRGD_PD# state if not using SMBUS

M T

Part Number: CDCDB803
Other Parts Discussed in Thread: CDCDB800, CDCDB400

If not using SMBUS, can the CKPWRGD_PD# pin be left no connect (and pulled low via 180K pulldown)?
Or should it be pulled high?

The pin configuration section states "If unused, the pin can be left no connect."

However, "Table 8-2. OE[7:0]# Functionality" seems to imply that if CKPWRGD_PD# is low, the output will not run.

Please advise.

Thanks,

over 1 year ago

+1 Asim Khan over 1 year ago

TI__Genius 9250 points

Hi MT,

That's correct. It should be pulled high externally for proper output operation. I will check and update the datasheet with correct description.

Best,

Asim

0 M T over 1 year ago in reply to Asim Khan

Prodigy 10 points

Thank you, Asim.

You may also wish to check the datasheet for CDCDB800 and CDCDB400 as they also have the same statement in the pin configuration section for CKPWRGD_PD#. "If unused, the pin can be left no connect."

0 Asim Khan over 1 year ago in reply to M T

TI__Genius 9250 points

Thanks for pointing that out. I will take that into account as well.

Best,

Asim

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CDCDB803: CKPWRGD_PD# state if not using SMBUS