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參數(shù)資料
| 型號(hào)： | XWM8711EDS |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Internet Audio DAC with Integrated Headphone Driver |
| 中文描述： | 互聯(lián)網(wǎng)音頻DAC集成耳機(jī)驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 31/36頁(yè) |
| 文件大?。?/td> | 379K |
| 代理商： | XWM8711EDS |
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WM8711
Product Preview
WOLFSON MICROELECTRONICS LTD
PP Rev 1.2 November 2000
31
REGISTER
ADDRESS
0001001
Active Control
BIT
LABEL
DEFAULT
DESCRIPTION
0
ACTIVE
0
Activate Interface
1 = Active
0 = Inactive
Reset Register
Writing 00000000 to register resets
device
Test Mode Failsafe Bit
1 = Test Mode Allowed
0 = Test Mode Locked Out
Analogue Test Register 1
0001111
Reset Register
8:0
RESET
not reset
1110000
Test Failsafe
0
TESTFAIL
SAFE
0
1110001
Analogue Test
Register 1
1110010
Analogue Test
Register 2
11100011
Digital Test
Register 1
11100100
Digital Test
Register 2
8:0
ATEST1[8:0]
0
8:0
ATEST2[8:0]
0
Analogue Test Register 2
8:0
DTEST1[8:0]
0
Digital Test Register 1
8:0
DTEST2[8:0]
0
Digital Test Register 2
Table 22 Register Map Description
Note:
All other bits not explicitly defined in the register table should be set to zero unless specified
otherwise (see powerdown section).
DIGITAL FILTER CHARACTERISTICS
The DAC employ different digital filters. There are 4 types of digital filter, called Type 0, 1, 2 and 3.
The performance of Types 0 and 1 is listed in the table below, the responses of all filters is shown in
the proceeding pages.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC Filter Type 0 (USB mode, 250fs operation)
Passband
+/- 0.03dB
-6dB
0
0.416fs
0.5fs
Passband Ripple
Stopband
Stopband Attenuation
DAC Filter Type 1 (USB mode, 272fs or Normal mode operation)
Passband
+/-0.03
dB
0.584fs
-50
f > 0.584fs
dB
+/- 0.03dB
-6dB
0
0.4535fs
0.5fs
Passband Ripple
Stopband
Stopband Attenuation
+/- 0.03
dB
0.5465fs
-50
f > 0.5465fs
dB
Table 23 Digital Filter Characteristics
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| XWM8721EDS | Internet Audio DAC with Integrated Headphone Driver |
| XWM8722EDS | Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
| XWM8728EDS | 24-bit, 192kHz Stereo DAC with Volume Control and DSD Support |
| XWM8729ED | 24-bit, 192kHz Stereo DAC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XWM8721EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Internet Audio DAC with Integrated Headphone Driver |
| XWM8721EDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Internet Audio DAC with Integrated Headphone Driver |
| XWM8722EDS | 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 |
| XWM8728EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, 192kHz Stereo DAC with Volume Control |
| XWM8728EDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, 192kHz Stereo DAC with Volume Control |
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