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參數(shù)資料
| 型號： | WM8718 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| 中文描述： | 24位差分立體聲DAC，具有音量控制 |
| 文件頁數(shù)： | 11/27頁 |
| 文件大?。?/td> | 284K |
| 代理商： | WM8718 |
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WM8718
Production Data
w
PD Rev 4.1 March 2004
11
The WM8718 will automatically detect when data with a LRCIN period of exactly 32 BCKINs is
sent, and select 16-bit mode - overriding any previously programmed word length. Word length
will revert to a programmed value only if a LRCIN period other than 32 BCKINs is detected.
In DSP early or DSP late mode, the data is time multiplexed onto DIN. LRCIN is used as a frame
sync signal to identify the MSB of the first word. The minimum number of BCKINs per LRCIN
period is 2 times the selected word length. Any mark to space ratio is acceptable on LRCIN
provided the rising edge is correctly positioned. (See Figure 7 and Figure 8)
LEFT JUSTIFIED MODE
In left justified mode, the MSB is sampled on the first rising edge of BCKIN following a LRCIN
transition. LRCIN is high during the left data word and low during the right data word.
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
Figure 4 Left Justified Mode Timing Diagram
RIGHT JUSTIFIED MODE
In right justified mode, the LSB is sampled on the rising edge of BCKIN preceding a LRCIN
transition. LRCIN is high during the left data word and low during the right data word.
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
Figure 5 Right Justified Mode Timing Diagram
I
2
S MODE
In I
2
S mode, the MSB is sampled on the second rising edge of BCKIN following a LRCIN
transition. LRCIN is low during the left data word and high during the right data word.
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
1 BCKIN
1 BCKIN
Figure 6 I
2
S Mode Timing Diagram
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相關代理商/技術(shù)參數(shù) |
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| WM8718_06 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 Bit Differential Stereo DAC with Volume Control |
| WM8718-6088-DS20-M-S | 功能描述:音頻 IC 開發(fā)工具 WM8718 MINI Eval Board System RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| WM8718EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| WM8718EDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| WM8718GEFL/RV | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC Differential O/P RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
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