How to config SVA on 410c

When the startup is completed at 410c, are the SVA already auto-listening keyword(hey snadragon)?and how to config handset(speaker/mic) for recording keyword?could provide me a sound trigger example about SVA?

Android vLA.BR.1.2.4-01810-8x16.0-3 how to config “Notify-All mode” for SVA?