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DRV8705-Q1: question on IC_CTRL and BRG_CTRL

Part Number: DRV8705-Q1

Hi Expert, 

One question for IC_CTRL and BRG_CTRL. My customer is using DRV8705-Q1 SPI version in their new project. 

I would like to check with you if we can config like this in PH/EN mode, PWM input from MCU to IN1/EN of DRV8705-Q1, but IN2/PH is controlled by register. Because customer do not connect IN2/PH to MCU pin. 

If yes, how to config? Set IN2/PH_MODE bit to 1 in IC_CTRL register, and control the signal by S_IN2/PH bit in BRG_CTRL register? 

Thanks!

Ethan Wen