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參數(shù)資料
| 型號： | SAA7708H |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | Car Radio Digital Signal Processor |
| 中文描述： | 汽車無線電數(shù)字信號處理器 |
| 文件頁數(shù)： | 4/60頁 |
| 文件大?。?/td> | 281K |
| 代理商： | SAA7708H |
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1998 May 19
4
Philips Semiconductors
Preliminary specification
Car Radio Digital Signal Processor
SAA7708H
1
GENERAL DESCRIPTION
The CDSP-chip performs all the signal functions in front of the power amplifiers and behind the AM and FM_MPX
demodulation of a car radio or the tape input. These functions are: interference absorption, stereo decoding, RDS
decoding, FM and AM weak signal processing (soft-mute, sliding stereo, etc.), Dolby-B tape noise reduction and the
audio controls (volume, balance, fader and tone). Some functions have been implemented in hardware (stereo decoder,
RDS decoding and IAC for FM_MPX) and are not freely programmable. A digital audio signals from external sources with
the Philips I
2
S and the LSB 16, 18 and 20 bit justified format or SPDIF format are accepted. There are four independent
analog output channels..
The DSP contains a basic program which enables a set with AM/FM reception, sophisticated FM weak signal functions,
MSS, Dolby-B tape noise reduction system, CD play with compressor function and separate bass and treble tone control
and fader/balance control.
2
HARDWARE FEATURES
Two 3rd order SCAD (switch cap analog to digital converters)
D/A converters with four fold over sampling and noise shaping
Digital stereo decoder for the FM_MPX signal
Improved, digital IAC for FM
RDS processing with optional 16 bit buffer via a separate channel.
Phone input with common mode rejection. Can be mixed with DAC output of front channels or processed via an AD
Auxiliary high CMRR analog CD input (CD-walkman, speech, economic CD-changer etc.)
One separate full I
2
S and LSB justified format and two muxable SPDIF high performance input interfaces
Audio output short circuit protected
I
2
C bus controlled
AM input or AM_Right and AM_Left input
Phase Lock Loop to generate the high frequency DSP clock from common fundamental oscillator crystal
Combined AM/FM level input
Two analog single ended tape inputs
-40 to +85
°
C operating temperature range
3
SOFTWARE FEATURES
Improved FM weak signal processing
Integrated 19 kHz MPX filter and de-emphasis
Electronic adjustments: FM/AM level, FM channel separation, Dolby level
Baseband Audio processing (treble/bass/balance/fader/volume)
Dynamic loudness or bass boost
Audio level meter
Music Search detection for Tape (MSS)
Dolby-B tape noise reduction
CD dynamics compressor
CD De-emphasis processing
Improved AM processing with IAC
Soft Audio Mute
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7709/N107 | 制造商:PHILIPS-SEMI 功能描述: |
| SAA7709H/N103 | 功能描述:音頻 DSP DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| SAA7709H/N103,518 | 功能描述:音頻 DSP DIRAC-2 RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| SAA7709H/N103,557 | 功能描述:音頻 DSP DIGITAL SIGNAL RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| SAA7709H/N103/S420 | 功能描述:音頻 DSP Car radio Digital Signal Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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