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參數(shù)資料
| 型號： | WM8722 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
| 中文描述： | 立體聲DAC，具有集成的音調(diào)發(fā)生器和線/變平輸出 |
| 文件頁數(shù)： | 21/23頁 |
| 文件大?。?/td> | 438K |
| 代理商： | WM8722 |
Advanced Information
WM8722
WOLFSON MICROELECTRONICS LTD
AI Rev 1.5 May 2000
21
SQR
The WM8722 can generate three different tone types. The default setting is a sinusoidal tone.
Square waves are generated by setting the SQR bit.
F2F
A two-tone output that generates one cycle at the chosen frequency, followed by two cycles at twice
that frequency can be selected by setting the F2F bit. This facility may be used in sine or square
wave modes.
SYSTEM DIAGRAM
STORAGE
(HDD)
VIDEO
DAC
DIGITAL
DECODER
MEDIA
FRONT END
HOME
CONNECTIVITY
SYSTEM
CLOCKS
WM8722
AUDIO
DAC
AMPLIFIER
VIDEO OUT
TONE
GENERATOR
OUTPUT
MONO AUDIO
OUTPUT
(OPTIONAL)
L
R
L
R
VARIABLE LEVEL
AUDIO OUTPUT (TV)
LINE LEVEL AUDIO
OUTPUT (VCR)
HEADPHONE
OUT
MIC OR
ANALOGUE
INPUT
Figure 10. Digital Set Top Box Application
The WM8722 is a complete audio sub-system designed for digital set top box applications. A typical
application might require audio outputs to be routed to a VCR and television. The WM8722 allows
the user to control the output audio level being sent to the television whilst maintaining a constant
volume level to the VCR. The on-board tone generator can be programmed to provide a audible
warning signal from the set top box to the television outputs without appearing on the line level
outputs. The WM8722 can also directly generate a mono signal for UHF outputs.
The WM8722 contains a stereo analogue input. This signal can be routed or mixed together onto the
line and variable outputs. It can be used to control the volume level of an audio output from another
audio source such as a games machine or additional set top box. Alternatively, it could be used to
provide a karaoke input from a digital effects processor.
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相關(guān)代理商/技術(shù)參數(shù) |
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| WM8722_01 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
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| WM8725 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
| WM8725_04 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
| WM8725_12 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
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