Someone

pcm.!default {
        type plug
        slave.pcm "duplex"
}

pcm.dsp{
    type plug
    slave {
        pcm {
            type    asym
            playback.pcm "hw:0,0"
            capture.pcm "hw:0,2"
        }
    }
}




pcm.duplex {
type asym
        playback.pcm "hw:0,0"
        capture.pcm "hw:0,2"
}