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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(jī)驅(qū)動(dòng)器和可編程采樣率 |
| 文件頁數(shù)： | 39/56頁 |
| 文件大?。?/td> | 595K |
| 代理商： | XWM8731EDS |
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WM8731
Advanced Information
WOLFSON MICROELECTRONICS LTD
AI Rev 2.0 February 2001
39
The exact sample rates achieved are defined by the relationships in Table 18 below.
ACTUAL SAMPLING RATE
BOSR=0
(256fs)
BOSR=1
(384fs)
TARGET
SAMPLING
RATE
MCLK=12.288
kHz
8
MCLK=11.2896
kHz
8.018
MCLK=18.432
kHz
8
MCLK=16.9344
kHz
8.018
kHz
8
12.288MHz/256 x 1/6
32
11.2896MHz/256 x 2/11
not available
18.432MHz/384 x 1/6
32
16.9344MHz/384 x 2/11
not available
32
12.288MHz/256 x 2/3
not available
18.432MHz/384x 2/3
not available
44.1
44.1
44.1
11.2896MHz/256
not available
16.9344MHz /384
not available
48
48
48
12.288MHz/256
not available
18.432MHz/384
not available
88.2
88.2
88.2
11.2896MHz/384 x 2
not available
16.9344MHz /384 x 2
not available
96
96
96
12.288MHz/256 x 2
18.432MHz/384 x 2
Table 18 Normal Mode Actual Sample Rates
128/192fs NORMAL MODE
The Normal Mode sample rates are designed for standard 256fs and 384fs MCLK rates. However the
WM8731 is also capable of being clocked from a 128 or 192fs MCLK for application over limited
sampling rates as shown in the table below.
SAMPLING
RATE
ADC
kHz
48
DAC
kHz
48
MCLK
FREQUENCY
SAMPLE
RATE
REGISTER SETTINGS
DIGITAL
FILTER
TYPE
MHz
6.144
9.216
5.6448
8.4672
BOSR
0
1
0
1
SR3
0
0
1
1
SR2
1
1
1
1
SR1
1
1
1
1
SR0
1
1
1
1
2
44.1
44.1
2
Table 19 128fs Normal Mode Sample Rate Look-up Table
512/768fs NORMAL MODE
512 fs and 768 fs MCLK rates can be accommodated by using the CLKIDIV2 bit. The core clock to
the DSP will be divided by 2 so an external 512/768 MCLK will become 256/384 fs internally and the
device otherwise operates as in Table 15 but with MCLK at twice the specified rate. See Table 12 for
software control.
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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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