Wiring Diagram

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5、clean FIFO hand 
The read-write pointer that receives FIFO and sends FIFO can be removed by writing '1' at
0x25, 0x26 corresponding register。When the packet is received, the read pointer indicates how
much bytes data is in FIFO. When the receiver receives SYNC, the receiving FIFO writes the
pointer automatically 0. When the emitter sends out the data, a FIFO reading pointer
automatically clears 0.
6、data packet payload length
Two ways to determine TX/RX package length. When register 0x01[2]= 1, the internal state of
the state can detect the package length according to the payload first byte data. If you want to send
8 bytes, the first byte should write 8 and the total word length is 9 bytes.
When register 0x01[2]= 0, the first byte data has no special significance. The packet length will
be determined by when the TX FIFO is empty or when the TX EN is cleared, see the table below.
0x01[2]
pack_length_en
0x01[1]
fw_term_tx
0
0
When TX EN= 0,
terminate the launch.
When RX EN= 0, it
terminates.
1
When FIFO is empty,
automatically terminates
the launch
When RX EN= 0, it
terminates。
1
x
The first byte of playload
shows the length of the
packet , 0 to 64 bytes . When
all data has been sent , the
transmission terminates
automatically
Table 13-1