RF31
Register 34h. Preamble Length
Bit
D7
D6
D5
D4
prealen[7:0]
R/w
D3
D2
D1
D0
Name
Type
Reset value = 00001000
Bit
Name
Function
Preamble Length.
The value in the prealen[8:0] register corresponds to the number of nibbles (4
bits) in the packet. For example prealen[8:0] = ‗000001000‘ corresponds to a
preamble length of 32bits (8 x 4bits) or 4 bytes. The maximum preamble length
is prealen[8:0] = 111111111 which corresponds to a 255 bytes Preamble.
Writing 0 will have the same result as if writing 1, which corresponds to one
single nibble of preamble.
7：0
prealen[7:0]
Register 35h. Preamble Detection Control 1
Bit
D7
D6
D5
preath[4:0]
R/w
D4
D3
D2
D1
rssi_offset[2:0]
R/w
D0
Name
Type
Reset value = 00101010
Bit
Name
Function
preath[4:0]
7：3
Number of nibbles processed during detection.
rssi_offset[2:0]
rssi_offset[2:0]
2:0
Value added as offset to RSSI calculation. Every increment in this register
results in an increment of +4 dB in the RSSI.
101
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