ACT5880 datasheet(20/87 Pages) ACTIVE-SEMI

20 / 87 page

ACT5880

Rev 2, 03-Sep-13

- 20 -

www.active-semi.com

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

I2CTM is a trademark of NXP.

Active-Semi Confidential―Do Not Copy or Distribute

BLOCK

ADDRESS

and BIT

NAME

DEFAULT

and

ACCESS

DESCRIPTION

REG1

0x10

W/R

For internal use only.

W/R

VSET0[5]

W/R

Voltage Setting for the REG1 output when VSEL=0. Default set-

ting is 1.2V. Refer to the STEP-DOWN DC/DC AND LDO OUT-

PUT VOLTAGE SETTING

table for details.

VSET0[4]

W/R

VSET0[3]

W/R

VSET0[2]

VSET0[1]

VSET0[0]

0x11

W/R

VSET1[5]

W/R

Voltage Setting for the REG1 when VSEL=1. Default setting is

1.2V (This voltage setting is also known as "Standby Voltage").

Refer to the STEP-DOWN DC/DC AND LDO OUTPUT VOLT-

AGE SETTING table for details.

VSET1[4]

W/R

VSET1[3]

W/R

VSET1[2]

VSET1[1]

VSET1[0]

0x12

W/R

Regulator On/Off Bit. Set bit to 1 to turn on the regulator, set bit

to 0 to turn off the regulator.

PHASE

W/R

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

180° out of phase with the oscillator, set bit to 0 for the regulator

to operate in phase with the oscillator.

MODE

W/R

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

mode under all load conditions, set bit to 0 to allow PFM mode

under light-load conditions.

DELAY[2]

W/R

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[1]

DELAY[0]

nFLTMSK

W/R

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

interrupt when the output is out of regulation, set bit to 0 to dis-

able fault-interrupt.

Regulator Power-OK Status. Value is 0 when the output is out of

regulation, value is 1 when the output is in regulation.

For internal use only.

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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