SENSORLESS BLDC DRIVERS L6234 & L6235 + ANALOG

Hello,

Appreciate for any assistance concerning the two bldc drivers as bellow:

1. Can L6234 and L6235 be use to drive a Sensorless BLDC Motors?

2. Can the L6234 AND L6235 accept an analog reading - kind of vin through simple two resistors used as voltage divider directly to the driver pin to affect the motor speed? is there any pin designated  for this analog input? if not can anyone suggest any idea how we can do that with this two ic's (L6234 & L6235)?

Appreciate for any quick response,