RFM22
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 32 bits (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
Reserved
R/w
D0
Name
Type
Reset value = 00101010
Bit
7：3
2:0
Name
Function
preath[4:0]
Reserved
Number of nibbles processed during detection.
Reserved.
Register 36h. Synchronization Word 3
Bit
D7
D6
D5
D4
D3
sync[31:24]
R/W
D2
D1
D0
Name
Type
Reset value = 00101101
Bit
Name
Function
Synchronization Word 3.
4th byte of the synchronization word.
7：0
sync[31:24]
106
Tel: +86-755-82973805
Fax: +86-755-82973550
E-mail: sales@hoperf.com
http://www.hoperf.com
HOPERF [ HOPERF ]
