ACT8891Q4I133-T Ver la hoja de datos (PDF) - Active-Semi, Inc

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ACT8891Q4I133-T

Advanced PMU for Rockchip RK2918 Processor

Active-Semi, Inc 

ACT8891

Rev 1, 06-Sep-13

REGISTER AND BIT DESCRIPTIONS CONT’D

OUTPUT ADDRESS BIT NAME ACCESS

DESCRIPTION

REG2

0x32

[7]

ON

R/W

Regulator Enable Bit. Set bit to 1 to enable the regulator, clear

bit to 0 to disable the regulator.

REG2

0x32

[6] PHASE

Regulator Phase Control. Set bit to 1 for regulator to operate

R/W 180° out of phase with the oscillator, clear bit to 0 for regulator

to operate in phase with the oscillator.

REG2

0x32

[5] MODE

Regulator Mode Select. Set bit to 1 for fixed-frequency PWM

R/W under all load conditions, clear bit to 0 to transit to power-

savings mode under light-load conditions.

REG2

0x32 [4:2] DELAY

R/W

Regulator Turn-On Delay Control. See the REG1, REG2,

REG3 Turn-on Delay section for more information.

REG2

0x32

[1] nFLTMSK

R/W

Regulator Fault Mask Control. Set bit to 1 enable to fault-

interrupts, clear bit to 0 to disable fault-interrupts.

REG2

0x32

[0]

OK

R

Regulator Power-OK Status. Value is 1 when output voltage

exceeds the power-OK threshold, value is 0 otherwise.

REG3

0x40 [7:6]

-

R Reserved.

REG3

0x40 [5:0] VSET1

Primary Output Voltage Selection. Valid when VSEL is driven

R/W low. See the Output Voltage Programming section for more

information.

REG3

0x41 [7:6]

-

R Reserved.

REG3

0x41 [5:0] VSET2

Secondary Output Voltage Selection. Valid when VSEL is

R/W driven high. See the Output Voltage Programming section for

more information.

REG3

0x42

[7]

ON

R/W

Regulator Enable Bit. Set bit to 1 to enable the regulator, clear

bit to 0 to disable the regulator.

REG3

0x42

[6] PWRSTAT

R/W

Configures regulator behavior with respect to the nPBIN input.

Set bit to 0 to enable regulator when nPBIN is asserted.

REG3

0x42

[5] MODE

Regulator Mode Select. Set bit to 1 for fixed-frequency PWM

R/W under all load conditions, clear bit to 0 to transition to power-

savings mode under light-load conditions.

REG3

0x42 [4:2] DELAY

R/W

Regulator Turn-On Delay Control. See the REG1, REG2,

REG3 Turn-on Delay section for more information.

REG3

0x42

[1] nFLTMSK

R/W

Regulator Fault Mask Control. Set bit to 1 enable to fault-

interrupts, clear bit to 0 to disable fault-interrupts.

REG3

0x42

[0]

OK

R

Regulator Power-OK Status. Value is 1 when output voltage

exceeds the power-OK threshold, value is 0 otherwise.

REG4

0x50 [7:6]

-

R Reserved.

REG4

0x50 [5:0] VSET

R/W

Output Voltage Selection. See the Output Voltage

Programming section for more information.

REG4

0x51

[7]

ON

R/W

Regulator Enable Bit. Set bit to 1 to enable the regulator, clear

bit to 0 to disable the regulator.

REG4

0x51

[6]

DIS

Output Discharge Control. When activated, discharges LDO

R/W

output to GA through 1.5kΩ when in shutdown. Set bit to 1 to

enable output voltage discharge in shutdown, clear bit to 0 to

disable this function.

REG4

0x51

[5] LOWIQ

R/W

LDO Low-IQ Mode Control. Set bit to 1 for low-power

operating mode, clear bit to 0 for normal mode.

REG4

0x51 [4:2] DELAY

R/W

Regulator Turn-On Delay Control. See the REG4, REG5,

REG6, REG7 Turn-on Delay section for more information.

REG4

0x51

[1] nFLTMSK

R/W

Regulator Fault Mask Control. Set bit to 1 enable to fault-

interrupts, clear bit to 0 to disable fault-interrupts.

REG4

0x51

[0]

OK

R

Regulator Power-OK Status. Value is 1 when output voltage

exceeds the power-OK threshold, value is 0 otherwise.

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