AS3412 datasheet(64/84 Pages) AMSCO

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[v1-00] 2016-Apr-06

AS3412 − Register Description

Figure 79:

ECO Register Description

Figure 80:

ANC_R Register Description

Name

Address

Default Value

ECO

0x17

0x00

This register controls the economic (ECO) mode for all analog audio blocks. Furthermore it includes also other

general settings.

Bit

Bit Name

Default

Access

Bit Description

SLIDE_PWR_UP

R/W

This bit enables the slide switch control mode of the

AS3512. If this bit is programmed the device can be

powered up and powered down via a slide switch.

0: Slide switch control disabled

1: Slide switch control enabled

ENABLE_HPH_

ECO

0R/W

This bit enables the eco mode of the headphone

amplifier.

0: Power save function disabled

1: Power save function enabled

ENABLE_MIC_

ECO

0R/W

This bit enables the eco mode of the microphone

amplifier.

0: Power save function disabled

1: Power save function enabled

ENABLE_OPAMP_

ECO

0R/W

This bit enables the eco mode of the operational

amplifier amplifiers for ANC filter design.

0: Power save function disabled

1: Power save function enabled

Name

Address

Default Value

ANC_R

0x30

80h

The ANC_R Register configures the gain for the right microphone input.

Bit

Bit Name

Default

Access

Bit Description

TEST_BIT_5

R/W

Please do not write this register.

5:0

MICR_VOL<5:0>

000 0000

R/W

Volume settings for right microphone input,

adjustable in 63 steps of 0.5dB

00 0000: MUTE

00 0001: 0dB gain

00 0010: 0.5dB gain

00 0011: 1dB gain

…

11 1110: 30dB gain

11 1111: 31dB gain

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