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WM9713 датащи(PDF) 47 Page - Wolfson Microelectronics plc

номер детали WM9713
подробное описание детали  AC 97 AUDIO TOUCHPANEL CODEC
PDF  111 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9713 датащи(HTML) 47 Page - Wolfson Microelectronics plc

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Preliminary Technical Data
WM9713L
1
PTD, March 2004, Rev 2.2
47
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.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
15
B2H
1
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
11
B2S
1
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
7
B2M
1
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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