PDMACHCR_DE
rsnd_dmapp_bset(dma, 0, PDMACHCR_DE, PDMACHCR);
if (0 == (rsnd_dmapp_read(dma, PDMACHCR) & PDMACHCR_DE))
dmapp->chcr = rsnd_dmapp_get_chcr(io, mod_from, mod_to) | PDMACHCR_DE;