Silicon Laboratories Si4430, Manual

Page: 136 / 152

S i 4 4 3 0
136 Preliminary Rev. 0.4
Reset value = 10000001
Reset value = 00000011
Register 65h. LDO Control Override
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name
enspor enbias envcoldo enifldo enrfldo enpllldo endigldo endigpwdn
Type
R/W R/W R/W R/W R/W R/W R/W R/W
Bit Name Function
7 enspor
Smart POR Enable.
6 enbias
Bias Enable.
5 envcoldo
VCO LDO Enable.
4 enifldo
IF LDO Enable.
3 enrfldo
RF LDO Enable.
2 enpllldo
PLL LDO Enable.
1 endigldo
Digital LDO Enable.
0 endigpwdn
Digital Power Domain Powerdown Enable in Idle Mode.
Register 66h. LDO Level Settings
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name
enovr enxtal ents enrc32 Reserved diglvl
Type
R/W R/W R/W R/W R R/W
Bit Name Function
7 enovr
Enable Overrides.
If high, ovr values are output to the blocks and can enable or disable them, if low, some
ovr value can only enable the blocks.
6 enxtal
Xtal Override Enable Value.
5 ents
Temperature Sensor Enable.
4 enrc32
32K Oscillator Enable.
3 Reserved
Reserved.
2:0 diglvl
Digital LDO Level Setting.