AS3517H-ECTP datasheet(67/94 Pages) AMSCO

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AS3517 V17

Data Sheet, Confidential

www.austriamicrosystems.com

Table 63 ADC_R Register

Name

Base

Default

ADC_R

2-wire serial

00h

Right ADC input Registers

Offset: 10h

Configures MUX_A and the gain from MUX_A output to the ADC input

This register is reset when the block is disabled in AudioSet1 register (14h) or at a

DVDD-POR. The register cannot be written when the block is disabled.

Bit

Bit Name

Default

Access

Bit Description

7:6

ADC_MUX_A

R/W

Connect MUX A output to following inputs

00: Microphone (N4/N6)

01: Line_IN1 (N1/N8)

10: Line_IN2 (N2/N7)

11: Audio SUM (N24/N25)

n/a

4:0

ADR_VOL

00000

R/W

Volume settings for right ADC input, adjustable in 32 steps @

1.5dB; gain from MUX_A output to ADC input (N9).

11111: 12 dB gain

11110: 10.5 dB gain

00001: -33 dB gain

00000: -34.5 dB gain

Table 64 ADC_L Register

Name

Base

Default

ADC_L

2-wire serial

00h

Left ADC input Registers

Offset: 11h

Configures the gain from MUX_A output to the ADC input and controls MUTE switch A.

This register is reset when the block is disabled in AudioSet1 register (14h) or at a

DVDD-POR. The register cannot be written when the block is disabled.

Bit

Bit Name

Default

Access

Bit Description

n/a

MUTE_OFF_A

R/W

Control of MUTE switch A

0: ADC input is set to mute

1: normal operation

n/a

4:0

ADL_VOL

00000

R/W

Volume settings for left ADC input, adjustable in 32 steps @

1.5dB, gain from MUX_A output to ADC input (N18).

11111: 12 dB gain

11110: 10.5 dB gain

00001: -33 dB gain

00000: -34.5 dB gain

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