frame_format=standard, tmod=trans_recv, work_mode=mode0
Control Register 0
| data_length | DATA_BIT_LENGTH |
| work_mode | WORK_MODE 0 (mode0): MODE_0 1 (mode1): MODE_1 2 (mode2): MODE_2 3 (mode3): MODE_3 |
| tmod | TRANSFER_MODE 0 (trans_recv): TRANS_RECV 1 (trans): TRANS 2 (recv): RECV 3 (eerom): EEROM |
| frame_format | FRAME_FORMAT 0 (standard): STANDARD 1 (dual): DUAL 2 (quad): QUAD 3 (octal): OCTAL |