BOOSTXL-DRV8323RH: CAL, ENABLE pin connection?

Part Number:BOOSTXL-DRV8323RH

Hi,

I have a question about hardware interface.

How Should I connect those pins(CAL, ENABLE, DIR, BRAKE, FAULT) with MCU?

CAL, ENABLE, DIR, BRAKE pins are input and FAULT is output.

Q1) Is it need pull-up resistor or pull-down resistor?

Q2) If I use two DRV8323 with one MCU, ENABLE and CAL pins can be shared?

Q3) If CAL pin is not used, how can it designed? (no connect or pull-down?) 

Thanks.