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參數(shù)資料
| 型號(hào)： | TDA7340G |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | AUDIO SIGNAL PROCESSOR |
| 中文描述： | 音頻信號(hào)處理器 |
| 文件頁(yè)數(shù)： | 16/27頁(yè) |
| 文件大?。?/td> | 205K |
| 代理商： | TDA7340G |
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VOLUME
MSB
D7
LSB
D0
FUNCTION
D6
D5
D4
D3
D2
D1
0.31dB FINE ATTENUATION STEPS
0
-0.31dB
-0.62dB
-0.94dB
1.25dB COARSE ATTENUATION STEPS
0dB
-1.25dB
-2.5dB
-3.75dB
-5dB
-6.25dB
-7.5dB
-8.75dB
10dB GAIN ATTENUATION STEPS
20dB
10dB
0dB
-10dB
-20dB
-30dB
-40dB
-50dB
0
0
1
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
For example to select -47.81dB Volume the Data Byte is: 11011001
STATUSAFTER POWER ON RESET
VOLUME
BASS, TREBLE
SPKRS LF, RF, LR, RR
LOUDNESS
INPUT
STEREODEC
MUTE
-59.69dB
Treble = +2dB, Bass = 0dB, symmetrical
-37.5dB
OFF, -17.5dB
No input selected, GAIN = 0dB, DIFF CD GAIN = -06dB, FULLY DIFF MODE
OFF, FORCED MONO, 6dB GAIN, PILOT THRESHOLD LOW, NOISE BLANKER =11
DIRECTLY MUTED, SOFT OFF, ZEROCROSS RESET, WINDOW THRESHOLD =11
NTB = 11, NAT = 11, OVD = OFF, FSC OFF, BLEND MODE OFF, INTERNAL MPX
PATH ENABLED
NOISE BLANKER
DESCRIPTION OFTHE NOISE BLANKER
In the normal automotive environment the MPX
signal is disturbed by ignition spikes, motors and
high frequencyswitches etc.
The aim of the noise blanker part is to cancel the
influence of the spikes producedby these compo-
nents. Therefore the output of the stereodecoder
is switched off for a time of 40
μ
s (average spike
duration).
In a first stage the spikes must be detectedbut to
avoid a wrong triggering on high frequency noise
a complextrigger control is implemented.
Behind the trigger stagea pulse former generates
the 40
μ
s ”blanking” pulse.
In the following section all of thesecircuits are de-
scribed in their function and their programming,
too (see fig.4).
TDA7340G
16/27
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7340 | AUDIO SIGNAL PROCESSOR |
| TDA7340P | AUDIO SIGNAL PROCESSOR |
| TDA7342 | DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7343 | DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7343D | DIGITALLY CONTROLLED AUDIO PROCESSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7340P | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AUDIO SIGNAL PROCESSOR |
| TDA7340S | 功能描述:音頻 DSP Audio Signal Proc 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 |
| TDA7342 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digitally controlled audio processor |
| TDA7342_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digitally controlled audio processor |
| TDA7342EQ2N | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digitally controlled audio processor |
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