AS3722 datasheet(103/199 Pages) AMSOSRAM

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Page 102

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[v1-01] 2015-Sep-07

AS3722 − Register Description

Figure 89:

SD1Voltage

Figure 90:

SD2Voltage

Addr:01h

SD1Voltage

Bit

Bit Name

Default

Access

Bit Description

sd1_low_power

Controls low power mode for sd1

0 : normal mode

1 : low power mode. Reduced current capability

only 1 phase enabled and reduced output

current on that phase

6:0

sd1_vsel

The voltage select bits set the DC/DC output

voltage

level and power the DC/DC converter down.

(0.61..1.5V)

00h : DC/DC powered down

01h-5Ah : V_SD1=0.6V+sd1_vsel*10mV

5Bh-7Fh : NA

Addr:02h

SD2Voltage

Bit

Bit Name

Default

Access

Bit Description

7sd2_frequ

Selects between high and low frequency

0 : 3 MHz

1 : 4 MHz

6:0

sd2_vsel

The voltage select bits set the DC/DC output

voltage

level and power the DC/DC converter down.

00h : DC/DC powered down

01h-40h : V_SD2=0.6V+sd2_vsel*12.5mV

41h-70h : V_SD2=1.4V+(sd2_vsel-40h)*25mV

71h-7Fh : V_SD2=2.6V+(sd2_vsel-70h)*50mV

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