AS3412 datasheet(68/84 Pages) AMSCO

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[v1-00] 2016-Apr-06

AS3412 − Register Description

Figure 85:

MODE_2 Register Description

Name

Address

Default Value

MODE_2

0x35

0x00

This register controls miscellaneous settings of the AS3512.

Bit

Bit Name

Default

Access

Bit Description

TEST_BIT_7

R/W

Test register. Please do not write this register.

MICS_DC_OFF

R/W

This bit disables the internal microphone supply

discharge function if the microphone supply is

switched off.

0: MICS discharge enabled

1: MICS discharge disabled

DELAY_HPH_

MUX

0R/W

With this bit it is possible to delay the HPH_MUX

setting during startup of the device to avoid

unwanted pop noise in case of long charging times of

external components.

0: HPH_MUX_OTP delay disabled

1: HPH_MUX_OTP delay enabled

1HPH_MODE

R/W

This register controls the operating mode of the

headphone amplifier. The headphone amplifier

supports single ended mode and differential mode. In

differential output mode the right audio signal path is

the active input signal for the headphone amplifier.

0: Stereo single ended mode

1: Mono differential mode

0I2C_MODE

R/W

This bit enables I²C power down of the AS3412.

0: I²C power down disabled

1: I²C power down enabled via PWR_HOLD bit.

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