RFM22 Datasheet, PDF (92/150 Pages) –

RFM22
Register 14h. Wake-Up Timer Period 1
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
Reserved
wtr[3:0]
wtd[1:0]
Type
R/w
R/w
R/w
Reset value = xxx00000
Bit
Name
Function
7：6
Reserved Reserved.
5：3
wtr[3:0]
Wake Up Timer Exponent (R) Value*.
1：0
wtd[1:0]
Wake Up Timer Exponent (D) Value*.
*Note: The period of the wake-up timer can be calculated as TWUT = (32 x M x 2^R-D ) / 32.768 ms.
Register 15h. Wake-Up Timer Period 2
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
wtm[15:8]
Type
R/W
Reset value = 00000000
Bit
Name
Function
7：0
wtm[15:8] Wake Up Timer Mantissa (M) Value*.
*Note: The period of the wake-up timer can be calculated as TWUT = (32 x M x 2^R-D ) / 32.768 ms.
Register 16h. Wake-Up Timer Period 3
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
wtm[7:0]
Type
R/W
Reset value = 00000001
Bit
Name
Function
7：0
wtm[7:0] Wake Up Timer Mantissa (M) Value*.
*Note: The period of the wake-up timer can be calculated as TWUT = (32 x M x 2^R-D ) / 32.768 ms.
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