EXI_DATA
WR4(exi_softc, EXI_DATA(chan), val);
val = RD4(exi_softc, EXI_DATA(chan));
WR4(exi_softc, EXI_DATA(chan), val);
val = RD4(exi_softc, EXI_DATA(chan));
WR4(EXI_DATA(usbgecko_chan), command32);
value = RD4(EXI_DATA(usbgecko_chan)) >> 16;
WR4(EXI_DATA(usbgecko_chan), 0);
value = RD4(EXI_DATA(usbgecko_chan));
out32(EXI_DATA(gecko_chan), 0);
value = in32(EXI_DATA(gecko_chan));
out32(EXI_DATA(gecko_chan), (uint32_t)command << 16);
value = in32(EXI_DATA(gecko_chan)) >> 16;