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CXD2724AQ-1 Datasheet(PDF) 48 Page - Sony Corporation

Part No. CXD2724AQ-1
Description  Single-Chip Dolby Pro Logic Surround Decoder
Download  65 Pages
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Manufacturer  SONY [Sony Corporation]
Direct Link  http://www.sony.co.jp
Logo SONY - Sony Corporation

CXD2724AQ-1 Datasheet(HTML) 48 Page - Sony Corporation

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CXD2724AQ-1
(2)-2. Coefficient Data
Noise sequencer mode allows both Pro Logic and Virtual processing. Of the coefficients for these two types of
processing, change the coefficients from addresses d0H to e2H as shown in the tables below.
The other coefficients may be left as the Pro Logic mode or Virtual mode coefficient settings.
L-ch
C-ch
R-ch
S-ch
L
→ C → R → S
L
→ C → R
2000
0000
0000
0000
2000
2000
T1 (d0H)
2000
3000
0000
0000
3000
3000
T2 (d1H)
2000
3000
4000
0000
4000
4000
T3 (d2H)
2000
3000
4000
5000
5000
4000
T4 (d3H)
d4H
d5H
d6H
d7H
d8H
d9H
daH
dbH
dcH
ddH
deH
dfH
e0H
e1H
e2H
Address
1000H
0040H
c000H
d2b1H
0000H
2d4fH
0000H
d2b1H
c000H
d2b1H
8000H
7789H
6f12H
0876H
6f14H
Fixed value
Table 8-4-2. Noise Sequencer Mode Coefficient Setting Values
Table 8-4-3. Noise Sequencer Mode
Coefficient Fixed Values
(3) Output Level Adjustment
[Relevant data] Coefficients: KL (f2H), KR (f3H), KH (f4H), KP (f5H), KCH (f6H), KCP (f7H), KS (f8H)
The noise output level in noise sequencer mode is adjusted by the center mode control coefficients (f2H to
f7H) and the passive decoder volume coefficient (f8H)
See (5) and (6)-4 of "8-1. Pro Logic Mode".
8-5. SFC Mode
SFC mode is used for 2-channel stereo input, and realizes reverberation effects using the delay lines, and
dynamics processing using 1/2 and 1/3 decimation and the compressor.
∗ This is a separate application from the simple SFC of Pro Logic mode.
(1) Setting SFC Mode
Set SFC mode by the following procedures.
• Immediately after power-on reset
i)
Transfer the setup data set in SFC mode.
ii) Transfer the SFC mode coefficient data.
• Changing to SFC mode from a different mode
i)
Apply the soft mute in the current mode.
ii) Transfer the setup data set in SFC mode.
iii) Transfer the SFC mode coefficient data.


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