Software specification TDA7342
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For example 12dB Treble and -8dB Bass give the following DATA BYTE: 0 0 1 1 1 0 0 1
0 0 1 0 -10dB
0 0 1 1 -8dB
0 1 0 0 -6dB
0 1 0 1 -4dB
0 1 1 0 -2dB
0 1 1 1 0dB
1 1 1 1 0dB
1 1 1 0 2dB
1 1 0 1 4dB
1 1 0 0 6dB
1 0 1 1 8dB
1 0 1 0 10dB
1 0 0 1 12dB
1 0 0 0 14dB
Bass steps
0 0 1 0 -10dB
0 0 1 1 -8dB
0 1 0 0 -6dB
0 1 0 1 -4dB
0 1 1 0 -2dB
0 1 1 1 -0dB
1 1 1 1 -0dB
1 1 1 0 2dB
1 1 0 1 4dB
1 1 0 0 6dB
1 0 1 1 8dB
1 0 1 0 10dB
1 0 0 1 12dB
1 0 0 0 14dB
0 0 0 1 146B
0 0 0 0 18dB
Table 11. Bass/Treble (continued)
MSB LSB
Function
D7 D6
D5 D4 D3 D2 D1 D0
TDA7342 Software specification
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For example to select -47.81dB Volume the Data Byte is: 1 1 0 1 1 0 0 1
Power on RESET: All Bytes Set to 1 1 1 1 1 1 1 0
Table 12. Volume
MSB LSB
Function
D7 D6
D5 D4 D3 D2 D1 D0
0.31dB Fine Attenuation Steps
0 0 0dB
0 1 -0.31dB
1 0 -0.62dB
1 1 -0.94dB
1.25dB Coarse Attenuation Steps
0 0 0 0dB
0 0 1 -1.25dB
0 1 0 -2.5dB
0 1 1 -3.75dB
1 0 0 -5dB
1 0 1 -6.25dB
1 1 0 -7.5dB
1 1 1 -8.75dB
10dB Gain / Attenuation Steps
0 0 0 20dB
0 0 1 10dB
0 1 0 0dB
0 1 1 -10dB
1 0 0 -20dB
1 0 1 -30dB
1 1 0 -40dB
1 1 1 -50dB
Package information TDA7342
18/20
5 Package information
In order to meet environmental requirements, ST offers these devices in ECOPACK
®
packages. These packages have a Lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 7. LQFP32 Mechanical Data & Package Dimensions
OUTLINE AND
MECHANICAL DATA
0060661 D
DIM.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 1.600 0.0630
A1 0.050 0.150 0.0020 0.0059
A2 1.350 1.400 1.450 0.0531 0.0551 0.0571
b 0.300 0.370 0.450 0.0118 0.0146 0.0177
c 0.090 0.200 0.0035 0.0079
D 8.800 9.000 9.200 0.3465 0.3543 0.3622
D1 6.800 7.000 7.200 0.2677 0.2756 0.2835
D3 5.600 0.2205
E 8.800 9.000 9.200 0.3465 0.3543 0.3622
E1 6.800 7.000 7.200 0.2677 0.2756 0.2835
E3 5.600 0.2205
e 0.800 0.0315
L 0.450 0.600 0.750 0.0177 0.0236 0.0295
L1 1.000 0.0394
K 3.500 7.000 0.1378 0.2756
ccc 0.100 0.0039
LQFP32 (7 x 7 x 1.40mm)
Weight: 0.20gr

E-TDA7342NTR

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
IC AUDIO PROCESSOR 32-LQFP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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