FUSB_SWITCHES0
reg = fusbtc_read_reg(sc, FUSB_SWITCHES0);
fusbtc_write_reg(sc, FUSB_SWITCHES0, reg);
reg = fusbtc_read_reg(sc, FUSB_SWITCHES0);
fusbtc_write_reg(sc, FUSB_SWITCHES0, reg);
reg = fusbtc_read_reg(sc, FUSB_SWITCHES0);
fusbtc_write_reg(sc, FUSB_SWITCHES0, reg);