UCC28950: How to shutdown UCC28950 PWM output by SYNC?

Part Number:UCC28950

Hi Guys

UCC28950 configured as Slave mode, suddenly interrupt its SYNC (Pin 16) pin PWM signal during its operation, can it immediately turn off the UCC28950 drive signals OUTA, OUTB, OUTC...? 

If we want to immediately turn off /disable drive signals such as OUTA, OUTB, OUTC, etc., which pins can be controlled?

Thanks

-Pengfei