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Can the uPD720114 USB hub controller operate on clock input?

Latest Updated:12/01/2006

Question:

Can the uPD720114 USB hub controller operate on clock input?

Answer:

No, clock input to the uPD720114 is prohibited.
The internal power supply and clock supply are stopped when the uPD720114 is in the Suspend mode.
Clock input at this time would damage the internal oscillator.
Further, since the Suspend mode is controlled by the host, no measures can be taken on the hub controller side.
If considering clock input for a 4-port hub controller, the uPD720112 is recommended.
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