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TAS5729MD Datasheet(PDF) 29 Page - Texas Instruments

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Part # TAS5729MD
Description  12W I짼S Input Class-D Amplifier with Digital Audio Processor and DirectPath??HP / Line Driver
PDF  59 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TAS5729MD Datasheet(HTML) 29 Page - Texas Instruments

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background image
u
Coefficient
Digit8
u u u
u u S x
Coefficient
Digit7
x.
x
x
x
Coefficient
Digit6
x
x
x
x
Coefficient
Digit5
x
x
x
x
Coefficient
Digit4
x
x
x
x
Coefficient
Digit3
x
x
x
x
Coefficient
Digit2
x
x
x
x
Coefficient
Digit1
Fraction
Digit5
Fraction
Digit4
Fraction
Digit3
Fraction
Digit2
Fraction
Digit1
Integer
Digit1
Sign
Bit
Fraction
Digit6
u=unusedordon’tcarebits
Digit=hexadecimaldigit
M0127-01
0
TAS5729MD
www.ti.com
SLOS836A – MAY 2013 – REVISED JUNE 2013
Gain coefficients, entered via the I²C bus, must be entered as 32-bit binary numbers. The format of the 32-bit
number (4-byte or 8-digit hexadecimal number) is shown in Figure 50
Figure 50. Alignment of 3.23 Coefficient in 32-Bit I²C Word
Table 2. Sample Calculation for 3.23 Format
dB
Linear
Decimal
Hex (3.23 Format)
0
1
8,388,608
80 0000
5
1.77
14,917,288
00E3 9EA8
–5
0.56
4,717,260
0047 FACC
X
L = 10(X/20)
D = 8388608 × L
H = dec2hex (D, 8)
Table 3. Sample Calculation for 9.17 Format
dB
Linear
Decimal
Hex (9.17 Format)
0
1
131,072
20 000
5
1.77
231,997
38 A3D
–5
0.56
73,400
11 EB8
X
L = 10(X/20)
D = 131,072 × L
H = dec2hex (D, 8)
Control Port Detailed Register Description
Copyright © 2013, Texas Instruments Incorporated
29
Product Folder Links: TAS5729MD



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