DRV8452: disable mode

Tool/software:

Hi experts

We are considering the use of the motor driver "DRV8452DDWR." We plan to connect it via a daisy chain using SPI communication, where the "STEP" signal will be input from the microcontroller to each motor driver for control. Due to limitations in the I/O ports of the microcontroller, we aim to minimize other inputs for control.
Under these conditions, I have two questions regarding the input signals ("DIR," "ENABLE," "nSLEEP"):
* Is it possible to drive the "STEP" signal with pulses from the microcontroller while controlling "DIR" solely through software? If so, how should the pin for "DIR (40 pin)" be handled?
* Can the switching of the half-bridge between "Disabled" and "Enabled" be controlled by fixing "ENABLE" and "nSLEEP" to High and only setting the "EN_OUT" bit? If this is possible, what is the recommended resistor value for pulling up "ENABLE" and "nSLEEP"?

Regards,

Zhou