PCKT_CONFIG register
| CRC_MODE | CRC type (0, 8, 16, 16 802. |
| SECONDARY_SYNC_SEL | In TX mode: this bit selects which synchro word is sent on the frame between SYNC and SEC_SYNC |
| SYNC_LEN | Length of the SYNC (and secondary) SYNC word in 1-bit granularity |
| SYNC_PRESENT | Indicate if a SYNC word is present on the frame or not (null length) |
| LEN_WIDTH | Indicates if the LENGTH field is defined on 1 byte or 2 bytes |
| FIX_VAR_LEN | Select the length mode |
| PREAMBLE_LENGTH | Length of the PREAMBLE in pairs of bits (0 to 2046) |
| PREAMBLE_SEQ | Select the PREAMBLE pattern to be applied |
| POSTAMBLE_LENGTH | Length of the POSTAMBLE in pair of bits (0 to 126 bits) |
| POSTAMBLE_SEQ | Packet postamble control: postamble bit sequence selection |