RFM31 Datasheet, PDF (119/137 Pages) –

RFM31
Register 67h. Delta-Sigma ADC Tuning 1
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
adcrst
enrefdac
enadc adctuneovr
adctune[3:0]
Type
R/W
R/W
R/W
R/W
R/W
Reset value = 00011101
Bit
Name
Function
7
adcrst
Delta-Sigma ADC Reset.
6
enrefdac
Delta-Sigma ADC Reference DAC Enable Override.
5
enadc
Delta-Sigma ADC Enable Override.
4
adctuneovr Resonator RC Calibration Value Override Enable.
3:0
adctune[3:0] Resonator RC Calibration Value.
Register 68h. Delta-Sigma ADC Tuning 2
Bit
Name
Type
D7
D6
D5
Reserved
R
D4
D3
D2
D1
D0
envcm
adcoloop
adcref[2:0]
R/W
R/W
R/W
Reset value = 00000011
Bit
Name
7:5
Reserved
4
envcm
3
adcoloop
2:0
adcref[2:0]
Function
Reserved.
Delta-Sigma ADC VCM Enable Override.
Delta-Sigma ADC Open Loop Enable.
Delta-Sigma ADC Reference Voltage.
000: 0.5 V
001: 0.6 V
010: 0.7 V
…
111: 1.2 V
119
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