RFM22 Datasheet, PDF (111/150 Pages) –

RFM22
Register 42h. Check Header 0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
chhd[7:0]
Type
R/W
Reset value = 00000000
Bit
7：0
Name
chhd[7:0]
Check Header 0.
1^st byte of the check header.
Function
Header Enable bytes 3 to 0 control which bits of the Check Header bytes are checked against the corresponding
bits in the Received Header. Only those bits are compared where the enable bits are set to 1.
Register 43h. Header Enable 3
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
hden[31:24]
Type
R/W
Reset value = 00000000
Bit
7：0
Name
hden[31:24]
Header Enable 3.
4^th byte of the check header.
Function
Register 44h. Header Enable 2
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
hden[23:16]
Type
R/w
Reset value = 00000000
Bit
7：0
Name
hden [23:16]
Header Enable 2.
3^rd byte of the check header.
Function
111
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