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LM4947 Datasheet(PDF) 25 Page - Texas Instruments

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Part No. LM4947
Description  Mono Class D and Stereo Audio Sub-System
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM4947 Datasheet(HTML) 25 Page - Texas Instruments

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LM4947, LM4947TLEVAL
www.ti.com
SNAS349D – JUNE 2006 – REVISED MAY 2013
Table 2. Control Registers
D7
D6
D5
D4
D3
D2
D1
D0
Mode Control
0
0
SE/Diff
0
OCL (select)
MC2
MC1
MC0
(select)
Programmable 3D
0
1
L2R2
L1R1 (select)
N3D3
N3D2
N3D1
N3D0
(select)
Mono Volume Control
1
0
0
MVC4
MVC3
MVC2
MVC1
MVC0
Left Volume Control
1
1
0
LVC4
LVC3
LVC2
LVC1
LVC0
Right Volume Control
1
1
1
RVC4
RVC3
RVC2
RVC1
RVC0
Table 3. Programmable Texas Instruments 3D Audio
N3D3
N3D2
Low
0
0
Medium
0
1
High
1
0
Maximum
1
1
Table 4. Input/Output Control
L2R2
L1R1
SE/DIFF
Select LIN1 and RIN1 Stereo Pair
0
1
0
Select LIN2 and RIN2 Stereo Pair
1
0
0
Select LIN1+LIN2 and RIN1+RIN2 Stereo Pair
1
1
0
Sets Stereo Inputs to Differential
x
x
1
Table 5. Output Volume Control Table
Volume Step
xVC4
xVC3
xVC2
xVC1
xVC0
Gain, dB
1
0
0
0
0
0
–59.50
2
0
0
0
0
1
–48.00
3
0
0
0
1
0
–40.50
4
0
0
0
1
1
–34.50
5
0
0
1
0
0
–30.00
6
0
0
1
0
1
–27.00
7
0
0
1
1
0
–24.00
8
0
0
1
1
1
–21.00
9
0
1
0
0
0
–18.00
10
0
1
0
0
1
–15.00
11
0
1
0
1
0
–13.50
12
0
1
0
1
1
–12.00
13
0
1
1
0
0
–10.50
14
0
1
1
0
1
–9.00
15
0
1
1
1
0
–7.50
16
0
1
1
1
1
–6.00
17
1
0
0
0
0
–4.50
18
1
0
0
0
1
–3.00
19
1
0
0
1
0
–1.50
20
1
0
0
1
1
0.00
21
1
0
1
0
0
1.50
22
1
0
1
0
1
3.00
23
1
0
1
1
0
4.50
24
1
0
1
1
1
6.00
Copyright © 2006–2013, Texas Instruments Incorporated
Submit Documentation Feedback
25
Product Folder Links: LM4947 LM4947TLEVAL


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