AS3709 datasheet(48/74 Pages) AMSCO

48 / 74 page

AS3709 – 48

ams Datasheet, Confidential: 2013-Aug [1-02]

Re g i st e r De sc rip t ion

Figure 64:

GPIOsignal_in Register (Address 21h)

Figure 65:

Reg1_Voltage Register (Address 22h)

Figure 66:

Reg2_Voltage Register (Address 23h)

Addr: 21h

GPIOsignal_in

Bit

Bit Name

Default

Access

Bit Description

7:2

'b0000

N/A

Do not use

1gpio2_in

This bit reflects the logic level of the GPIO2 pin when

configured as digital input pin.

0gpio1_in

This bit reflects the logic level of the GPIO1 pin when

configured as digital input pin.

Addr: 22h

Reg1_Voltage

Bit

Bit Name

Default

Access

Bit Description

7:0

reg1_voltage

'b0000 0000

This register is mapped to the register address

0h+Reg1_select , if gioX_iosf = 5 or 6 (Vselect input),

and input = 1. This feature allows voltage switching of a

predefined regulator with just one GPIO input.

0 ..FFh : Selects voltage and frequency bits of DCDC

Addr: 23h

Reg2_Voltage

Bit

Bit Name

Default

Access

Bit Description

7:0

reg2_voltage

'b0000 0000

This register is mapped to the register address

0h+Reg1_select, if gioX_iosf=5 or 6 (Vselect input), and

input = 1, This feature allows voltage switching of a

predefined regulator with just one GPIO input

0 ..FFh : Selects voltage and frequency bits of DCDC

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