CDU_CRC8
#define CDU_RSRVD_VALUE_TYPE_A(_cid, _region, _type) (0x80 | ((CDU_CRC8(_cid, _region, _type)) & 0x7f))
#define CDU_RSRVD_VALUE_TYPE_B(_crc, _type) (0x80 | ((_type)&0xf << 3) | ((CDU_CRC8(_cid, _region, _type)) & 0x7))