ACT8931A
Rev 3, 29-Nov-12
REGISTER AND BIT DESCRIPTIONS CONT’D
OUTPUT ADDRESS BIT
NAME
ACCESS
DESCRIPTION
REG4
REG4
0x50
0x50
[7:6]
[5:0]
-
R
Reserved.
Output Voltage Selection. See the Output Voltage
Programming section for more information.
VSET
ON
R/W
R/W
Regulator Enable Bit. Set bit to 1 to enable the regulator,
clear bit to 0 to disable the regulator.
REG4
REG4
0x51
0x51
[7]
[6]
Output Discharge Control. When activated, LDO output is
discharged to GA through 1.5kꢀ resistor when in shutdown.
Set bit to 1 to enable output voltage discharge in shutdown,
clear bit to 0 to disable this function.
DIS
R/W
LDO Low-IQ Mode Control. Set bit to 1 for low-power
operating mode, clear bit to 0 for normal mode.
REG4
REG4
REG4
0x51
0x51
0x51
[5]
[4:2]
[1]
LOWIQ
DELAY
R/W
R/W
R/W
Regulator Turn-On Delay Control. See the REG4, REG5,
REG6, REG7 Turn-on Delay section for more information.
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
0x51
0x54
0x54
[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
0x55
0x55
[7]
[6]
ON
R/W
R/W
Output Discharge Control. When activated, LDO output is
discharged to GA through 1.5kꢀ resistor when in shutdown.
Set bit to 1 to enable output voltage discharge in shutdown,
clear bit to 0 to disable this function.
DIS
LDO Low-IQ Mode Control. Set bit to 1 for low-power
operating mode, clear bit to 0 for normal mode.
REG5
REG5
REG5
0x55
0x55
0x55
[5]
[4:2]
[1]
LOWIQ
DELAY
R/W
R/W
R/W
Regulator Turn-On Delay Control. See the REG4, REG5,
REG6 , REG7 Turn-on Delay section for more information.
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
0x55
0x60
0x60
[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
REG6
0x61
0x61
[7]
[6]
ON
R/W
R/W
Output Discharge Control. When activated, LDO output is
discharged to GA through 1.5kꢀ resistor when in shutdown.
Set bit to 1 to enable output voltage discharge in shutdown,
clear bit to 0 to disable this function.
DIS
LDO Low-IQ Mode Control. Set bit to 1 for low-power
operating mode, clear bit to 0 for normal mode.
REG6
REG6
REG6
0x61
0x61
0x61
[5]
[4:2]
[1]
LOWIQ
DELAY
R/W
R/W
R/W
Regulator Turn-On Delay Control. See the REG4, REG5,
REG6, REG7 Turn-on Delay section for more information.
Regulator Fault Mask Control. Set bit to 1 enable fault-
interrupts, clear bit to 0 to disable fault-interrupts.
nFLTMSK
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