CBIT_INTM
i2c_wr8(sd, CBIT_INTM, ~(MASK_M_CBIT_FS | MASK_M_AF_LOCK |
i2c_wr8(sd, CBIT_INTM, 0xff);
u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM);