ACT8847
Rev 5, 15-Nov-12
REGISTER AND BIT DESCRIPTIONS CONT’D
BLOCK ADDRESS BIT
NAME
ACCESS
DESCRIPTION
REG3
REG3
0x31
0x31
[7:6]
[5:0]
R
Reserved.
-
Secondary Output Voltage Selection. Valid when VSEL is driven
high. See the Output Voltage Programming section for more
information.
VSET1
R/W
Regulator Enable Bit. Set bit to 1 to enable the regulator, clear bit
to 0 to disable the regulator.
REG3
REG3
0x32
0x32
[7]
ON
-
R/W
R
[6:3]
Reserved.
Regulator Phase Control. Set bit to 1 for the regulator to operate
180° out of phase with the oscillator, clear bit to 0 for the
regulator to operate in phase with the oscillator.
REG3
REG3
0x32
0x32
[2]
[1]
PHASE
R/W
R/W
Regulator Fault Mask Control. Set bit to 1 enable fault-interrupts,
clear bit to 0 to disable fault-interrupts.
nFLTMSK
Regulator Power-OK Status. Value is 1 when output voltage
exceeds the power-OK threshold, value is 0 otherwise.
REG3
REG4
0x32
0x40
[0]
OK
-
R
R
[7:6]
Reserved.
Primary Output Voltage Selection. Valid when VSEL is driven low.
See the Output Voltage Programming section for more
information
REG4
REG4
REG4
0x40
0x41
0x41
[5:0]
[7:6]
[5:0]
VSET0
-
R/W
R
Reserved.
Secondary Output Voltage Selection. Valid when VSEL is driven
high. See the Output Voltage Programming section for more
information.
VSET1
R/W
Regulator Enable Bit. Set bit to 1 to enable the regulator, clear bit
to 0 to disable the regulator.
REG4
REG4
0x42
0x42
[7]
ON
-
R/W
R
[6:3]
Reserved.
Regulator Phase Control. Set bit to 1 for the regulator to operate
180° out of phase with the oscillator, clear bit to 0 for the
regulator to operate in phase with the oscillator.
REG4
REG4
0x42
0x42
[2]
[1]
PHASE
R/W
R/W
Regulator Fault Mask Control. Set bit to 1 enable fault-interrupts,
clear bit to 0 to disable fault-interrupts.
nFLTMSK
Regulator Power-OK Status. Value is 1 when output voltage
exceeds the power-OK threshold, value is 0 otherwise.
REG4
REG5
REG5
0x42
0x50
0x50
[0]
OK
-
R
R
[7:6]
[5:0]
Reserved.
Output Voltage Selection. See the Output Voltage Programming
section for more information.
VSET
R/W
Regulator Enable Bit. Set bit to 1 to enable the regulator, clear bit
to 0 to disable the regulator.
REG5
REG5
0x51
0x51
[7]
ON
-
R/W
R
[6:3]
Reserved.
Output Discharge Control. When activated, LDO output is
discharged to GA through 1.5kΩ resistor when in shutdown. Set
bit to 1 to enable output voltage discharge in shutdown, clear bit
to 0 to disable this function.
REG5
REG5
0x51
0x51
[2]
[1]
DIS
R/W
R/W
Regulator Fault Mask Control. Set bit to 1 enable fault-interrupts,
clear bit to 0 to disable fault-interrupts.
nFLTMSK
Regulator Power-OK Status. Value is 1 when output voltage
exceeds the power-OK threshold, value is 0 otherwise.
REG5
REG6
REG6
0x51
0x58
0x58
[0]
OK
-
R
R
[7:6]
[5:0]
Reserved.
Output Voltage Selection. See the Output Voltage Programming
section for more information.
VSET
R/W
Regulator Enable Bit. Set bit to 1 to enable the regulator, clear bit
to 0 to disable the regulator.
REG6
0x59
[7]
ON
R/W
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