A37X0_IIC_IDBR
A37X0_IIC_WRITE(sc, A37X0_IIC_IDBR, slave);
*buf++ = A37X0_IIC_READ(sc, A37X0_IIC_IDBR);
A37X0_IIC_WRITE(sc, A37X0_IIC_IDBR, *buf++);