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參數(shù)資料
| 型號： | XWM8731EDS |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | Codec |
| 英文描述： | Portable Internet Audion CODEC with Headphone Driver and Programmable Sample Rates |
| 中文描述： | 便攜式互聯(lián)網(wǎng)三極管編解碼器的耳機驅(qū)動器和可編程采樣率 |
| 文件頁數(shù)： | 25/56頁 |
| 文件大小： | 595K |
| 代理商： | XWM8731EDS |
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WM8731
Advanced Information
WOLFSON MICROELECTRONICS LTD
AI Rev 2.0 February 2001
25
VMID
FROM LINE
INPUTS
LINEOUT
FROM DAC
BYPASS
TO HEADPHONE AMP
DACSEL
FROM MICROPHONE
INPUT
SIDETONE
Figure 18 Line Output Schematic
The DAC output, Line Input and microphone are summed into the Line Output. In DAC mode only the
output from the DAC is routed to the line outputs. In Bypass mode the Line Input is summed into the
Line Outputs. In Side Tone mode the Microphone Input is summed into the Line Output. These
features can be used for either over-dubbing or, if the DAC is muted, as a pure analogue bypass or
Side Tone feature, so avoiding any digital signal processing.
The line output is muted by either muting the DAC (analogue) or Soft Muting (digital) and disabling
the BYPASS and SIDETONE paths. Refer to the DAC section for more details. Whenever the DAC
is muted or the device placed into standby mode the DC voltage is maintained at the line outputs to
prevent any audible clicks from being present.
The software control for the line outputs is shown in Table 7.
REGISTER
ADDRESS
0000100
Analogue
Audio Path
Control
BIT
LABEL
DEFAULT
DESCRIPTION
3
BYPASS
1
Bypass Switch
1 = Enable Bypass
0 = Disable Bypass
DAC Select
1 = Select DAC
0 = Don
’
t select DAC
Side Tone Switch
1 = Enable SideTone
0 = Disable Side Tone
4
DACSEL
0
5
SIDETONE
0
Table 7 Output Software Control
The recommended external components are shown in Figure 19.
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| XWM8733ED | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:102dB Stereo DAC |
| XWM8734EDS | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| XWM8734EDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo Audio CODEC |
| XWM8734EDS/RV | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| XWM8734EDS/V | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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