參數(shù)資料
型號(hào)： XWM8706EDS
廠商： Wolfson Microelectronics
英文描述： 24-bit, 192kHz Stereo DAC with Volume Control
中文描述： 24位，192kHz的帶有音量控制的立體聲DAC
文件頁(yè)數(shù)： 13/24頁(yè)
文件大小： 237K
代理商： XWM8706EDS
WM8706
Product Preview
WOLFSON MICROELECTRONICS LTD
PP Rev 1.2 April 2001
13
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
0
0.001
0.002
0.003
0.004
0.005
0.006
Time(s)
Figure 9 Application and Release of Soft Mute
The MUTEB pin is an input to select mute or not mute. MUTEB is active low; taking the pin low
causes the filters to soft mute, ramping down the audio signal over a few milliseconds. Taking
MUTEB high again allows data into the filter.
The automute function detects a series of zero value audio samples of 1024 samples long
being applied to both channels. After such an event, a latch is set whose output
(AUTOMUTED) is wire OR
’
ed through a 10kohm resistor to the MUTEB pin. Thus if the
MUTEB pin is not being driven, the automute function will assert mute.
If MUTEB is tied high, AUTOMUTE is overridden and will not mute unless the IZD register bit is
set. If MUTEB is driven from a bi-directional source, then both MUTE and automute functions
are available. If MUTEB is not driven, AUTOMUTED appears as a weak output (10k source
impedance) so can be used to drive external mute circuits. Automute will be removed as soon
as any channel receives a non-zero input.
A diagram showing how the various Mute modes interact is shown below in Figure 10.
IZD (Register Bit)
AUTOMUTED
(Internal Signal)
10k
MUT (Register Bit)
SOFTMUTE
(Internal
Signal)
MUTEB
PIN
Figure 10 Selection Logic for MUTE Modes
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XWM8711EDS 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:Internet Audio DAC with Integrated Headphone Driver
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XWM8722EDS 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs
XWM8728EDS 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:24-bit, 192kHz Stereo DAC with Volume Control
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