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參數(shù)資料
| 型號(hào)： | WM8756 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 192KHZ SIX CHANNEL SACD COMPATIBLE AUDIO DAC |
| 中文描述： | 192kHz的六聲道SACD的兼容的音頻數(shù)模轉(zhuǎn)換器 |
| 文件頁數(shù)： | 26/39頁 |
| 文件大?。?/td> | 330K |
| 代理商： | WM8756 |
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WM8756
Advance Information
AI Rev 1.3 October 2001
26
DSDB MODE SELECT
This pin puts the device into DSD mode when taken low. Due to the nature of DSD operation only a single
software controlled function is available in this mode. This is the PDWN bit.
DSDB
0
1
DSD MODE
Device in DSD mode
Device in normal PCM operation
Table 18 DSD mode Control
DSD DIGITAL AUDIO INTERFACE
DSD mode is selected by taking the DSDB pin low. In this mode the internal digital filters are by-passed,
and the already modulated bitstream data is applied directly to the Switched Capacitor DAC filter where it
is converted and low-pass filtered.
Two formats are supported for data transfer, NORMAL or PHASE MODULATED.
In Normal mode, DSD data is simply clocked into the device using the rising edge of the 64fs DSDCLK64
signal (see Figure 3).
In Phase Modulation mode, the data is supplied in Manchester encoded form (a bit transition occurs
during every data bit, which shapes the spectral energy minimising corruption of the analogue outputs). A
secondary clock DSDCLK128, at 128fs is used to simplify data recovery, the data simply being clocked
with the falling edge of DSDCLK128 when DSDCLK64 is low (see Figure 4). Operation of PHASE
MODULATED mode is auto-detected by the presence of a clock signal on the DSDCLK128 pin.
DSD clocks are either inputs (when DMSLV = ‘0’) or outputs (when DMSLV = ‘1’). When DMSLV is ‘1’ the
clocks are derived by using the SCKI as detailed below:
DMCKSEL
DSDCLK64
DSDCLK128
0
1
SCKI/4
SCKI/6
SCKI/2
SCKI/3
Table 19 Master/Slave clock selection
DMSLV
CLOCKS
0
1
inputs
outputs
Table 20 Master/Slave function
See Figure 3 and Figure 4 for details of DSD interface timing
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| WM8756EFT | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:192KHZ SIX CHANNEL SACD COMPATIBLE AUDIO DAC |
| WM-875-899-PK | 制造商:Brady Corporation 功能描述:CONSECUTIVE NOS. - LEGEND: 875-899 |
| WM8758B | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo CODEC with Headphone Driver and Line Out |
| WM8758BGEFL/RV | 功能描述:接口—CODEC Stereo CODEC plus PCM 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 |
| WM8758BGEFL/V | 功能描述:接口—CODEC Stereo CODEC plus PCM 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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