How to use 3 digital MIC in orin NX

in the spec of Jetson_Orin_NX_DS-10712-001_v1.0.pdf ,page 17. It describes 3 DMIC can be used in design. but i can’t find whick IO can receive the DMIC signal.
there’re no more info from design guide(Jetson_Orin_NX_Design_Guide_DG-10931-001_v1.2.pdf),or the PIN-mux documents(Jetson_Orin_NX_series_and_Orin_Nano_series_Pinmux_Config_Template.xls)
do nv team afford us more information? or the document’s name.
we want to use 3 MIC for audio recognition and one codec for normal using, such as speaker.
thanks

Sorry for the late response, below is the comment from internal team.

I don’t think it is possible to use DMIC with ORIN NX. DMIC pins are not exposed via CVM itself.

Thanks

copy that.
we will use one codec to deal with 3 DMICs.
thanks