TUSB2077A: 7-Port USB Hub - minimal design requirments

Tool/software:

Dear Texas Engineers

I am looking at using your TUSB2077A 7-Port Hub chip to produce a USB interface between a host and 6 Raspberry Pi boards via their USB interfaces.

In my system, each Pi is powered directly from a 5V supply, not via USB, and I would like to understand the absolute minimum component and connection requirement from the typical circuit schematic shown in the device data sheet (Figure 6, page11). i.e:

1. I have a 3.3V supply available, so I do not need the regulator shown in the schematic
2. I have 5V for the downstream ports so I do not need the power switching (unless the TUSB2077A requires this). Can I remove this from your Fig.6 schematic?
3. I can provide the 6MHz clock, and will specify the crystal circuit as per your section 8.3.2 and figure 5.
4. I could provide an  EEPROM for enumeration but section 8.4.1 says this is optional and that by default, without the EEPROM, the TUSB2077A will enumerate as "General Purpose USB Hub". Please can you confirm this is the case and that I can remove the EEPROM shown in your Fig.6 schematic. Otherwise I wil use the specified SGS Thompson M93C46
5. The power-on reset signal on the RESET pin is defined as "Generally, a reset with a pulse width between 100 μs and 1 ms is recommended after 3.3-V VCC reaches its 90%". Please can you specifya known functional circuit or ideally a POR device to achieve this (There seems no other reference in the data sheet).

Thanks in advance,

Duncan