參數(shù)資料
型號： SAA7705H
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： Car radio Digital Signal Processor（DSP）(車載電臺數(shù)字信號處理器)
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
文件頁數(shù)： 3/60頁
文件大?。?/td> 1857K
代理商： SAA7705H
1999 Aug 16
3
Philips Semiconductors
Preliminary specification
Car radio Digital Signal Processor (DSP)
SAA7705H
1
FEATURES
1.1
Hardware
Three 3rd-order Switched Capacitor Analog-to-Digital
converters (SCADs)
Digital-to-Analog Converters (DACs) with four times
oversampling and noise shaping
Digital stereo decoder for the FM multiplex signal
ImproveddigitalInterferenceAbsorptionCircuit(IAC)for
FM
Radio Data System (RDS) processing with an optional
16-bit buffer via a separate channel (two tuners
possible)
Auxiliary high Common-Mode Rejection Ratio (CMRR)
analog CD input (CD-walkman, speech, economic
CD-changer, etc.)
I
2
C-bus controlled
Four channel 5-band I
2
C-bus controlled parametric
equalizer
Two separate full I
2
S-bus and LSB-justified formats high
performance input interfaces
Audio output short-circuit protected
Separate AM left and right inputs
Phase-Locked Loop (PLL) to generate the high
frequency DSP clock from a common fundamental
oscillator crystal
Analog single-ended tape inputs
I
2
S-bus subwoofer output (mono or stereo)
Expandable with additional DSPs for sophisticated
features through an I
2
S-bus gateway
Operating ambient temperature from
40 to +85
°
C.
1.2
Software
Improved FM weak signal processing
Integrated 19 kHz MPX filter and de-emphasis
Electronic adjustments: FM/AM level, FM channel
separation and Dolby level
Baseband audio processing (treble, bass, balance,
fader and volume)
Dynamic loudness or bass boost
Audio level meter
Tape equalisation (tape analog playback)
Music Search System (MSS) detection for tape
Dolby-B tape noise reduction
Adjustable dynamics compressor
CD de-emphasis processing
Improved AM reception
Soft audio mute
AM IAC
Pause detection for RDS updates
Signal level, noise and multipath detection for AM/FM
signal quality information.
2
APPLICATIONS
Car radio systems.
3
GENERAL DESCRIPTION
The SAA7705H performs all the signal functions in front of
the power amplifiers and behind the AM and FM multiplex
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
Audio controls (volume, balance, fader and tone).
Some functions have been implemented in the hardware
(stereo decoder, RDS decoding and IAC for FM multiplex)
and are not freely programmable. Digital audio signals
fromexternalsourceswiththePhilipsI
2
S-busformatorthe
LSB-justified 16, 18 or 20 bits format are accepted.
There are four independent analog output channels.
The channels have a hardware implemented 5-band
parametric equalizer, controlled via the I
2
C-bus.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA7706H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Car radio Digital Signal Processor (DSP)
SAA7706H/N107 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
SAA7706H/N107,518 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC DIRAC-1 RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
SAA7706H/N107,557 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC DIGITAL SIGNAL RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
SAA7706H/N107S,518 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC CAR RADIO DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
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