ACT5880
Rev 2, 03-Sep-13
REGISTER AND BIT DESCRIPTIONS CONT’D
DEFAULT
and
ACCESS
ADDRESS
and BIT
BLOCK
NAME
DESCRIPTION
7
6
5
4
3
2
1
0
x
x
0
0
1
1
0
1
0
1
W/R For internal use only.
W/R
W/R
VSET[5]
VSET[4]
VSET[3]
VSET[2]
VSET[1]
VSET[0]
Voltage Setting for the REG4 output. Default setting is 2.9V.
Refer to the STEP-DOWN DC/DC AND LDO OUTPUT VOLTAGE
SETTING table for details.
0x40
Regulator On/Off Bit. Set bit to 1 to turn on the regulator, set bit to 0
to turn off the regulator.
7
6
ON
1
0
W/R
W/R
W/R
Output Discharge Control. Set bit to 1 to discharged the LDO output
to GA through 1.5kꢀ resistor when in shutdown.
DIS
REG4
LDO Low-IQ Mode Control. Set bit to 1 for low quiescent current
mode, set bit to 0 for normal mode.
5
4
LOWIQ
0
0
Regulator Turn-On Delay Control. DELAY[2:0]=000 for no delay.
Other code to delay relationship: 001 for 2ms, 010 for 4ms, 011 for
8ms, 100 for 16ms, 101 for 32ms, 110 for 64ms and 111 for 128ms.
There is a propagation delay for about 100μs if selecting no delay.
DELAY[2]
0x41
W/R
3
2
DELAY[1]
DELAY[0]
0
0
Regulator Fault Interrupt Mask. Set bit to 1 to enable fault-interrupt
when the output is out of regulation, set bit to 0 to disable fault-
interrupt.
1
nFLTMSK
OK
0
W/R
R
Regulator Power-OK Status. Value is 0 when the output is out of
regulation, value is 1 when the output is in regulation.
0
R
7
6
5
4
3
2
1
0
x
x
0
0
1
1
0
1
0
1
W/R
W/R
For internal use only.
VSET[5]
VSET[4]
VSET[3]
VSET[2]
VSET[1]
VSET[0]
Voltage Setting for the REG5 output. Default setting is 2.9V.
Refer to the STEP-DOWN DC/DC AND LDO OUTPUT VOLTAGE
SETTING table for details.
0x44
W/R
Regulator On/Off Bit. Set bit to 1 to turn on the regulator, set bit to 0
to turn off the regulator.
7
6
ON
1
0
W/R
W/R
W/R
Output Discharge Control. Set bit to 1 to discharged the LDO output
to GA through 1.5kꢀ resistor when in shutdown.
DIS
REG5
LDO Low-IQ Mode Control. Set bit to 1 for low quiescent current
mode, set bit to 0 for normal mode.
5
4
LOWIQ
0
0
Regulator Turn-On Delay Control. DELAY[2:0]=000 for no delay.
Other code to delay relationship: 001 for 2ms, 010 for 4ms, 011 for
8ms, 100 for 16ms, 101 for 32ms, 110 for 64ms and 111 for 128ms.
There is a propagation delay for about 100μs if selecting no delay.
DELAY[2]
0x45
W/R
3
2
DELAY[1]
DELAY[0]
0
0
Regulator Fault Interrupt Mask. Set bit to 1 to enable fault-interrupt
when the output is out of regulation, set bit to 0 to disable fault-
interrupt.
1
0
nFLTMSK
OK
0
W/R
R
Regulator Power-OK Status. Value is 0 when the output is out of
regulation, value is 1 when the output is in regulation.
R
Note:
W/R: Write and read accessible. R: Read accessible, writing to the bit does not make change to the volume. WE/R: Write
and read accessible, write exact what it is before to avoid unexpected behavior. X is uncertain volume.
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