dac_i_write
dac_i_write(DACREG_AC1_I, t->p << 6 | t->n);
dac_i_write(DACREG_CC_I,
dac_i_write(DACREG_BD0_I, t->m);
dac_i_write(DACREG_BD1_I, t->p << 6 | t->n);
dac_i_write(DACREG_CC_I,
dac_i_write(DACREG_CR0_I,
dac_i_write(DACREG_AC0_I, t->m);