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CXD2720Q-2 Datasheet(PDF) 20 Page - Sony Corporation

Part No. CXD2720Q-2
Description  Single-Chip Dolby Pro Logic Surround Decoder
Download  47 Pages
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Manufacturer  SONY [Sony Corporation]
Direct Link  http://www.sony.co.jp
Logo SONY - Sony Corporation

CXD2720Q-2 Datasheet(HTML) 20 Page - Sony Corporation

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CXD2720Q-2
(3) Data Structure
Data structure is classified in three types, as shown in the table below. All data communication is done with
LSB first.
Name
A0 to A7
M0 to M7
D0 to D15/SQ00 to SQ23
8
8
16/24
Address section
Transmission
mode section
Data section
Coefficient RAM is 16 bits; setup register is
24 bits
Bit length
Contents
Remarks
(3)-1. Transmission Mode Section
The transmission mode section is 8 bits and has the following functions.
Bit
M7
M6
M5
M4
M3
M2
M1
M0
0: ON (No sound)
1: OFF
VS1
VS0
0
0
Setup register
1
0
Coefficient RAM (K-RAM)
0: Receive
1: Send
XVMT
VS1
VS0
VRD
SO Mute
Reserve
Data type
Reserve
Send/Receive
Name
Function
(3)-2. Address Section
The coefficient RAM has a 192-word structure, so the address section is 8 bits. The setup register has a 1-
word structure, so the address section data may be optional.
(3)-3. Data Section
Sixteen SCK are required, as the coefficient RAM has a 16-bit structure (D0 to D15). The setup register has a
24-bit structure (SQ00 to SQ23), so twenty-four SCK are required.
Table 6-2. Data Structure
Table 6-3. Transmission Mode Section
Note) Polarity as seen from the CXD2720Q-2


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