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TDA7342 数据表(PDF) 10 Page - STMicroelectronics

部件名 TDA7342
功能描述  DIGITALLY CONTROLLED AUDIO PROCESSOR
Download  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7342 数据表(HTML) 10 Page - STMicroelectronics

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MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
1
Soft Mute On
0
1
Soft Mute with fast slope (I = IMAX)
1
1
Soft Mute with slow slope (I = IMIN)
1
Direct Mute
0
1
Zero Crossing Mute On
00
Zero Crossing Mute Off (delayed until next zero
crossing)
1
Zero Crossing Mute and Pause Detector Reset
0
0
0
160mV ZC Window Threshold (WIN = 00)
0
1
0
80mV ZC Window Threshold (WIN = 01)
1
0
0
40mV ZC Window Threshold (WIN = 10)
1
1
0
20mV ZC Window Threshold (WIN = 11)
0
Nonsymmetrical Bass Cut (note 4)
1
Symmetrical Bass Cut
An additional direct mute function is included in the Speaker Attenuators.
Note 4: Bass cut for very low frequencies; should not be used at +16 and +18dB bass boost (DC gain)
Mute
MSB
LSB
SPEAKER ATTENUATOR LF, LR, RF, RR
D7
D6
D5
D4
D3
D2
D1
D0
1.25dB step
XXX
0
0
0
0dB
X
X
X
0
0
1
-1.25dB
X
X
X
0
1
0
-2.5dB
X
X
X
0
1
1
-3.75dB
XXX
1
0
0
-5dB
X
X
X
1
0
1
-6.25dB
X
X
X
1
1
0
-7.5dB
X
X
X
1
1
1
-8.75dB
10dB step
XXX
0
0
0dB
X
X
X
0
1
-10dB
X
X
X
1
0
-20dB
X
X
X
1
1
-30dB
X
X
X
1
1
1
1
Speaker Mute
For example an attenuationof 25dB on a selected output is given by: X X X1 0 1 0 0
Speaker Attenuators
TDA7342
10/14


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