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參數(shù)資料
| 型號： | WM8782 |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | ADC |
| 英文描述： | 24-Bit, 192kHz Stereo ADC |
| 中文描述： | 24位192kHz立體聲ADC |
| 文件頁數(shù)： | 11/19頁 |
| 文件大?。?/td> | 216K |
| 代理商： | WM8782 |
Product Preview
WM8782
w
PP, May 2004, Rev 1.0
11
DIGITAL AUDIO INTERFACE
The digital audio interface uses three pins:
DOUT: ADC data output
LRCLK: ADC data alignment clock
BCLK: Bit clock, for synchronisation
The digital audio interface takes the data from the internal ADC digital filters and places it on DOUT
and LRCLK. DOUT is the formatted digital audio data stream output from the ADC digital filters with
left and right channels multiplexed together. LRCLK is an alignment clock that controls whether Left
or Right channel data is present on the DOUT line. DOUT and LRCLK are synchronous with the
BCLK signal with each data bit transition signified by a BCLK high to low transition. DOUT is always
an output. BCLK and LRCLK maybe an inputs or outputs depending whether the device is in Master
or Slave mode. (see Master and Slave Mode Operation, below).
Three different audio data formats are supported:
Left justified
Right justified
I
2
S
MASTER AND SLAVE MODE OPERATION
The WM8782 can be configured as either a master or slave mode device. As a master device the
WM8782 generates BCLK and LRCLK and thus controls sequencing of the data transfer on DOUT.
In slave mode, the WM8782 responds with data to clocks it receives over the digital audio interface.
The mode can be selected by setting the MS input pin (see Table 4 Master/Slave selection below).
Master and slave modes are illustrated below.
Figure 5 Master Mode
Figure 6 Slave Mode
PIN
DESCRIPTION
M/S
Master/Slave Selection
0 = Slave Mode
1= Master Mode
Table 4 Master/Slave selection
AUDIO INTERFACE CONTROL
The Input Word Length and Audio Format mode can be selected by using IWL and FORMAT pins.
PIN
DESCRIPTION
IWL
Word Length
0 = 16 bit
1 = 20 bit
Z = 24 bit
Audio Mode Select
0 = RJ
1 = LJ
Z = I2S
FORMAT
Table 5 Audio Data Format Control
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| WM8782_06 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-Bit, 192kHz Stereo ADC |
| WM8782_10 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-Bit, 192kHz Stereo ADC |
| WM8782-6125-SSOP20-EV1 | 制造商:Wolfson Microelectronics 功能描述:Evaluation Board for WM8782 Stereo ADC |
| WM8782ASEDS/RV | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC STEREO ADC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
| WM8782ASEDS/V | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC STEREO ADC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
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