DRV8833: DRV8833 output waveform

Part Number:DRV8833

Dear Sir,

I use EVM test, Please kindly help check the waveform is correct ?

AIN1_ PWM input,  AIN2_ 0 ; the function is forward PWM

1) why AOUT2(green)  have smaller waveform ?

2)AOUT1 is fast decay ?

Thanks!

Steven