dmac_cctl
dmac_cctl = DM_MODE|DM_APAD;
dmac_cctl = DM_MODE|DM_APAD|DM_ENABLE;
dmac_cctl = DM_APAD;
dmac_cctl = DM_APAD|DM_ENABLE;
dmac_gsel = (x); dmac_cctl = DM_RST; dmac_cctl = 0; \