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參數(shù)資料
| 型號(hào)： | WM8725 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 99dB Stereo DAC |
| 中文描述： | 九九分貝立體聲DAC |
| 文件頁(yè)數(shù)： | 7/9頁(yè) |
| 文件大?。?/td> | 348K |
| 代理商： | WM8725 |
Production Data
WM8725
WOLFSON MICROELECTRONICS LTD
PD Rev 2.0 July 2000
7
SYSTEM CLOCK
The system clock is used to operate the digital filters and the noise shaping circuits. The
system clock input is at pin 14 (SCKI). The frequency of WM8725
’
s system clock should be
set to 256fs or 384fs, (where fs is the audio sampling frequency). The sample rate is
typically: 32 kHz, 44.1 kHz, 48 kHz or 96kHz.
WM8725 has a system clock detection circuit that automatically determines whether the
system clock being supplied is at 256fs or 384fs. The system clock should be synchronised
with LRCIN, but WM8725 is tolerant of phase differences. Severe distortion in the phase
difference between LRCIN and the system clock will be detected, and cause the device to
automatically resynchronise. During resynchronisation, the output of the device will either
repeat the previous sample, or drop the next sample, depending on the nature of the phase
slip. This will ensure minimal
“
click
“
at the analogue outputs during resynchronisation.
SCKI
t
SCKIL
t
SCKIH
Figure 3 System Clock Timing Requirements
SYSTEM CLOCK FREQUENCY
(MHz)
256fs
8.192
SAMPLING
RATE (LRCIN)
384fs
12.288
32 kHz
44.1 kHz
48 kHz
96kHz
11.2896
12.288
24.576
16.9340
18.432
36.864
Table 4 System Clock Frequencies Versus Sampling Rate
LRCIN
BCKIN
DIN
t
BCH
t
BCL
t
LB
t
BL
t
BCY
t
DS
t
DH
Figure 4 Audio Data Input Timing
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| WM8725ED | 99dB Stereo DAC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8725_04 | 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:99dB Stereo DAC |
| WM8725_12 | 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:99dB Stereo DAC |
| WM8725CGED | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換器數(shù)量: 分辨率: 接口類(lèi)型: 轉(zhuǎn)換速率: 信噪比: 工作電源電壓: DAC 輸出端數(shù)量: 工作溫度范圍: 電源電流: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| WM8725CGED/R | 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:99dB Stereo DAC |
| WM8725ED | 制造商:WOLFSON 制造商全稱(chēng):WOLFSON 功能描述:99dB Stereo DAC |
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