AS3658 datasheet(76/158 Pages) AMSCO

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Table 66. Step Down Voltage1 Bit definitions

Addr:00

Step Down Voltage1

These bits control the step down regulator voltage, frequency, clk phase

Bit

Bit Name

Default Access

Description

Table 67. Step Down Voltage2 Bit definitions

Addr:01

Step Down Voltage2

These bits control the step down regulator voltage, frequency, clk phase

Bit

Bit Name

Default Access

Description

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Revision 1v13

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AS3658

Data Sheet Confidential - Detail ed Descri ption-Power Management Functions

sd3_on

ROM

R/W

Switch on/off the step down3 dc/dc converter; it is possible

to on/off control DCDC SD3 by CURR3_GPIO3 or

CURR4_GPIO4 (see General Purpose Input / Output

(CURR1_GPIO1 … CURR4_GPIO4) on page 30)

Step Down DC/DC 3 off

Step Down DC/DC 3 on

5:0

step_down1_v

ROM

R/W

Control the voltage selection for the step down1 DC/DC

converter

000000 0.6 V

…

(LSB=50mV)

111000 – 11111 3.4 V

sd1_frequ

ROM

R/W

Select the step down1 frequency

fclk_int

(1.6MHz to 2.3 MHz)

fclk_int/2 (0.8MHz to 1.15 MHz)

sd1_clkinvert

ROM

R/W

Inverts the input clock of the step down1 converter

5:0

step_down2_v

ROM

R/W

Control the voltage selection for the step down2 DC/DC

converter

000000 0.6 V

…

(LSB=50mV)

111000 – 11111 3.4 V

sd2_frequ

ROM

R/W

Select the step down2 frequency

fclk_int

(1.6MHz to 2.3 MHz)

fclk_int/2 (0.8MHz to 1.15 MHz)

sd2_clkinvert

ROM

R/W

Inverts the input clock of the step down1 converter

Table 65. Step Down DC/DC Reg Power1 ctrl Bit definitions

Addr:23

Reg Power1 Ctrl

These bits control the on/off function of the step down regulator

Bit

Bit Name

Default Access

Description

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