AS3412 datasheet(62/84 Pages) AMSCO

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[v1-00] 2016-Apr-06

AS3412 − Register Description

Figure 77:

MONITOR_MODE Register Description

Name

Address

Default Value

MONITOR_MODE

0x15

00h

The MONITOR_MODE register controls various settings for the chipset in monitor mode like line input monitor

mode attenuation as well as which audio inputs are active.

Bit

Bit Name

Default

Access

Bit Description

7:6

MON_HPH_

MUX<1:0>

R/W

This register selects the ANC input source for the

headphone amplifier in monitor mode. Depending on

the register setting the outputs of microphone

preamplifier, OPAMP1, OPAMP2 can be connected to

the headphone amplifier input.

00: QMIC outputs are connected to HPH input

01: OP1 outputs are connected to HPH input

10: Do not use this setting

11: Nothing connected to HPH input except line input.

MON_LIN_MUTE

R/W

This bit mutes the audio line input pin in Monitor

mode.

0: Line input enabled in Monitor mode

1: Line input muted in Monitor mode

1SLIDER_MON

R/W

This bit enables the Full Slider Mode configuration.

Please mind that this bit must not be set without

setting SLIDE_PWR_UP to ‘1’.

0: Slider Mode activated

1: Full Slider Mode activated

DISABLE_

MONITOR

0R/W

This bit disables the monitor mode in push button

control mode.

0: Monitor mode enabled

1: Monitor mode disabled

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