WM9713 datasheet(47/111 Pages) WOLFSON

47 / 111 page

Preliminary Technical Data

WM9713L

PTD, March 2004, Rev 2.2

PCBEEP is biased internally to the reference voltage VREF. When the signal is not selected as an

input to any of the mixers the input remains biased to VREF using special anti-thump circuitry to

suppress any audible clicks when changing inputs.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

B2H

Mute PCBEEP path to headphone mixer

1: Mute, 0: No mute (ON)

14:12

B2HVOL

010

(0dB)

PCBEEP to headphone mixer gain

000: +6dB

… (3dB steps)

111: -15dB

B2S

Mute PCBEEP path to speaker mixer

1: Mute, 0: No mute (ON)

10:8

B2SVOL

010

(0dB)

PCBEEP to speaker mixer gain

000: +6dB

… (3dB steps)

111: -15dB

B2M

Mute PCBEEP path to mono mixer

1: Mute, 0: No mute (ON)

16h

PCBEEP input

6:4

B2MVOL

010

(0dB)

PCBEEP to mono mixer gain

000: +6dB

… (3dB steps)

111: -15dB

Table 29 PCBEEP Control

DIFFERENTIAL MONO INPUT

PCBEEP and MONOIN inputs can be configured to provide a differential mono input. This is

achieved by mixing the two inputs together using the headphone mixers or the speaker mixer. Note

that the gain of the MONOIN PGA must match the gain of the PCBEEP mixer input to achieve a

balanced differential mono input.

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