AT_XDMAC_CNDC
at_xdmac_chan_read(atchan, AT_XDMAC_CNDC),
atchan->save_cndc = at_xdmac_chan_read(atchan, AT_XDMAC_CNDC);
at_xdmac_chan_write(atchan, AT_XDMAC_CNDC, atchan->save_cndc);
at_xdmac_chan_write(atchan, AT_XDMAC_CNDC, reg);
at_xdmac_chan_read(atchan, AT_XDMAC_CNDC),
at_xdmac_chan_read(atchan, AT_XDMAC_CNDC),