DRV2510-Q1: How does it operate by IN+ input, IN- input, and FREQ_SEL register?

Part Number: DRV2510-Q1

Hi team, 

Could you tell me How it operates by IN+ input, IN- input, and FREQ_SEL register?
I could not find any truth table or relationship among IN+, IN-, OUT+, OUT-, or their PWM duty.

Regards,
Ochi