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CXD2724AQ-3 Datasheet(PDF) 53 Page - Sony Corporation

Part No. CXD2724AQ-3
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-3 Datasheet(HTML) 53 Page - Sony Corporation

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CXD2724AQ-3
8000H
c000H
e000H
eff6H
ffffH
0000H
D15 to D0
+6.02
0.00
–6.02
–12.00
–84.29
Level [dB]
Table 8-5-4. Kia (dcH) Setting Value Examples
8000H
a563H
c000H
d2b2H
e000H
f000H
ffffH
0000H
D15 to D0
0.00
–3.00
–6.02
–9.02
–12.04
–18.06
–90.31
Level [dB]
Table 8-5-5. Setting Value Examples
for Each Volume
(Other than Kia, Negative Values)
7fffH
5a9dH
4000H
2d4eH
2000H
1000H
0001H
0000H
D15 to D0
0.00
–3.00
–6.02
–9.02
–12.04
–18.06
–90.31
Level [dB]
Table 8-5-6. Setting Value Examples for Each Volume
(Other than Kia, Positive Values)
(3) Volume Settings
[Relevant data] Coefficients: KLsri (0cH), KRsri (0dH), Kfb (0eH), KLtp0 (15H), KLtp1 (16H),
KLtp2 (17H), KLtp3 (18H), KLtp4 (19H), KRtp0 (1aH), KRtp1 (1bH),
KRtp2 (1cH), KRtp3 (1dH), KRtp4 (1eH), KStp0 (1fH), KStp1 (20H),
KStp2 (21H), KStp3 (22H), b0 (23H), b1 (24H), KLdry (25H), KRdry (26H),
KLeff (27H), KReff (28H), KLlpi (29H), KRlpi (2aH), KLlpo (30H),
KRlpo (31H), KLod (32H), KRod (33H), KSod (34H), KLd (35H), KRd (36H),
KCod (37H), Kd (5dH), KiA (d6H), Kia (dcH), Kis (ddH)
The I/O levels and volumes are 2's complement format with a decimal point between D15 and D14, and
hexadecimal notation with D15 as MSB and D0 as LSB.
The coefficient and level relationships are as follows.
(3)-1. Kia (dcH): 0dB = c000H
The I/O levels for 8000H to ffffH are obtained by the following
formulas.
(Coefficient value) = [(–1)
× D15 + ∑ (Dn × 2n – 15)] × (–2)
I/O level = 20 log [coefficient value] dB
(3)-2. Other Coefficients
Except for Kia, the coefficients listed in the [Relevant data] above
are basically specified by negative values (D15 to D0) with "0dB =
8000H". When intentionally inverting the phase, however, specify
positive values with "0dB = 7fffH".
∗ The DSP calculation for coefficient values other than Kfb is
(–1)
× (D15 to D0).
The I/O levels for 8000H to ffffH are obtained by the following
formulas.
(Coefficient value) = [(–1)
× D15 + ∑ (Dn × 2n – 15)] × (–1)
I/O level = 20 log [coefficient value] dB
The I/O levels for 7fffH to 0001H are obtained by the following
formulas.
(Coefficient value) = [D15 +
∑ (Dn × 2n – 15)]
I/O level = 20 log [coefficient value] dB
14
n = 0
14
n = 0
14
n = 0


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