RFM22
Register 67h. Delta-Sigma ADC Tuning 1
Bit
D7
adcrst
R/W
D6
enrefdac
R/W
D5
enadc
R/W
D4
adctuneovr
R/W
D3
D2
adctune[3:0]
R/W
D1
D0
Name
Type
Reset value = 00011101
Bit
7
Name
Function
adcrst
enrefdac
enadc
Delta-Sigma ADC Reset.
6
Delta-Sigma ADC Reference DAC Enable Override.
Delta-Sigma ADC Enable Override.
5
adctuneovr
adctune[3:0]
4
Resonator RC Calibration Value Override Enable.
Resonator RC Calibration Value.
3:0
Register 68h. Delta-Sigma ADC Tuning 2
Bit
D7
D6
Reserved
R
D5
D4
envcm
R/W
D3
adcoloop
R/W
D2
D1
adcref[2:0]
R/W
D0
Name
Type
Reset value = 00000011
Bit
7:5
4
Name
Function
Reserved
envcm
Reserved.
Delta-Sigma ADC VCM Enable Override.
Delta-Sigma ADC Open Loop Enable.
Delta-Sigma ADC Reference Voltage.
adcoloop
3
000:
001:
010:
…
0.5 V
0.6 V
0.7 V
adcref[2:0]
2:0
111: 1.2 V
130
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