RF31 Hope Microelectronics co., Ltd, RF31 Datasheet - Page 101

• Manufacturer Part Number: RF31
• Description: Rf31 Ism Receiver
• Manufacturer: Hope Microelectronics co., Ltd

Register 34h. Preamble Length
Reset value = 00001000
Register 35h. Preamble Detection Control 1
Reset value = 00101010
Name
Name
Type
Type
7：0
7：3
Bit
Bit
2:0
Bit
Bit
Tel: [phone]
rssi_offset[2:0]
prealen[7:0]
D7
D7
preath[4:0]
Name
Name
D6
D6
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.
Number of nibbles processed during detection.
rssi_offset[2:0]
Value added as offset to RSSI calculation. Every increment in this register
results in an increment of +4 dB in the RSSI.
Fax: [phone]
preath[4:0]
R/
D5
D5
w
D4
D4
prealen[7:0]
E-mail: [e-mail]
R/
w
Function
Function
D3
D3
D2
D2
http://www.hoperf.com
rssi_offset[2:0]
R/
R F 3 1
D1
D1
w
D0
D0
101