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參數(shù)資料
| 型號(hào)： | SAF7846HL |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 存儲(chǔ)器 |
| 英文描述： | One chip CD audio device with integrated MP3-WMA decoder |
| 封裝： | SAF7843HL/M295<SOT486-1 (LQFP144)|<<http://www.nxp.com/packages/SOT486-1.html<1<Always Pb-free,;SAF7849HL/M245<SOT486-1 (LQFP144)|<<http://www.nxp.com/packages/SOT486-1.h |
| 文件頁(yè)數(shù)： | 40/93頁(yè) |
| 文件大小： | 396K |
| 代理商： | SAF7846HL |
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SAF784X_2
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 9 May 2008
40 of 93
NXP Semiconductors
SAF784x
One chip CD audio device with integrated MP3/WMA decoder
Decoded and error-corrected CD data streams into the back end from the memory
processor to the output interfaces; some audio filtering can be done in-between, when
playing CD-DA for example.
6.5.9.1
Audio processing
The following audio features are present in the back end:
Interpolate/hold for I
2
S
Soft mute for I
2
S
De-emphasis filter for I
2
S
Upsample filter for I
2
S
Error detection
Silence detection
Kill generation
Some status bits concerning these audio features can be read back via register
MuteKillStatus.
6.5.9.2
Interpolate-and-hold
On CD audio discs with many large defects, where C1 or C2 correction is unable to
correct all the errors, the audio data can be interpolated or held, to avoid audible clicks or
plops when playing back the disc. This feature is enabled by setting FilterConfig bit
INTERPOLATEEN.
The interpolate-and-hold principle is shown in
Figure 21
.
Audio samples flagged as uncorrectable, neighbored by two good samples, or a held and
a good sample, will be interpolated. Audio samples flagged as uncorrectable, which are
not followed by a good sample, will hold the previous (correct or held) sample value.
This feature is enabled or disabled for I
2
S and EBU together.
Fig 21. CD audio error concealment
001aag325
OK
OK
OK
OK
interpolation
hold
hold
error
error
error
error
interpolation
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| SAF7849HL | One chip CD audio device with integrated MP3-WMA decoder |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAF7846HL/M210,557 | 功能描述:音頻 DSP 1 chip CD Audio Dev w/Integrated decoder RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| SAF7847HL/M201,557 | 功能描述:音頻 DSP 1 chip CD Audio Dev w/Integrated decoder RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| SAF7849HL/M245,557 | 功能描述:音頻 DSP IC AUD DECODER RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| SAF7849HL/M295,557 | 功能描述:音頻 DSP IC AUD DECODER RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| SAF7860HL/M2,557 | 制造商:NXP Semiconductors 功能描述:DSP |
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