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TUSB2077A: I have two question about using TUSB2077A, Please let me know.

Part Number: TUSB2077A

Hello,

1) I was wondering about an APLL.

     On page5 "datasheet", PIN Functions: MODE -> Mode select. When MODE is low, the APPL output clock is selected as the clock source ~~~

     what is the full name of APLL?

2) Question number 11 on the "TI USB 1.1/USB 2.0 Hub Frequently Asked Questions", we have to pull down to the ground if unused downstream ports exist.

     Then, 15KOhm is enough for a pull-down resistor value?

Thanks for reading.

And I'm looking forward to your reply.