DS30BA101: Powering the device

Part Number: DS30BA101
Other Parts Discussed in Thread: DRIVECABLE04EVK

Hi,

DS30BA101 has 2 VCC pins, pins 6 and 9.
There is no indication in the datasheet that it is okay to use only pin 9 and leave pin 6 floating.
And yet, this is exactly the case in DRIVECABLE04EVK schematic, pin 6 is not connected.
 
So is it okay to leave pin 6 not connected?
What is the function of pin 6?
 
Thank you,
Yerach