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參數(shù)資料
| 型號： | CXD2724AQ-1 |
| 廠商： | Sony Corporation |
| 英文描述： | Single-Chip Dolby Pro Logic Surround Decoder |
| 中文描述： | 單片杜比定向邏輯環(huán)繞聲解碼器 |
| 文件頁數(shù)： | 41/65頁 |
| 文件大?。?/td> | 611K |
| 代理商： | CXD2724AQ-1 |
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CXD2724AQ-1
8-2. Virtual Dolby Surround Mode (Virtual Mode)
Virtual mode is comprised of the Dolby Pro Logic Surround decoder and the Virtualizer as shown in Fig. 8-2-1.
Virtual Dolby Surround is realized by the Virtualizer block.
(1) Setting Virtual Mode
Virtual mode must be set by the following procedures in order to achieve stable adaptive matrix operation.
Setting Virtual mode by procedures other than those given below may aggravate the decoder characteristics.
Immediately after power-on reset
i)
Transfer the following setup data.
SQA = 0030H (Field A)
SQD = 7ee7H (Field D)
Field C is "All 0", so the DAC forced mute is applied.
ii) Transfer the Virtual mode coefficient data.
iii) Transfer the setup data set in Virtual mode.
Changing to Virtual mode from a different mode
i)
Apply the soft mute in the current mode.
ii) Set the coefficients at the following addresses to "0000H".
Addresses: 6eH to 7fH
iii) Transfer the following setup data.
SQA = 0030H (Field A)
SQD = 7ee7H (Field D)
The DAC forced mute is not applied by Field C.
iv) Transfer the Virtual mode coefficients for the soft mute status.
v) Transfer the setup data set in Virtual mode.
vi) Cancel the Virtual mode soft mute.
(2) Setting Data
(2)-1. Setup Data
Table 8-2-1 lists the registers most closely related to Virtual mode.
Setup data not listed in Table 8-2-1 may be set as desired, with due consideration given to the contents of
Fields A to D noted in "6. Setup Register".
1: Noise sequencer mode
1: Virtual mode
01: Dolby 3 Stereo mode
01: SFC mode
Coefficient RAM area setting (111: Other than Virtual mode, 100: Virtual mode)
SQA14
SQA13
SQA09, 08
SQA05, 04
SQD02 to 00
"0"
"1"
"00"
"00"
"100"
Register name
Setting value
Remarks
Table 8-2-1. Virtual Mode Setup Register Settings
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| CXD2724AQ-3 | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:Single-Chip Dolby Pro Logic Surround Decoder |
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| CXD2917Q | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:DIGITAL AUDIO DATA MODULATION AND TRANSMISSION |
| CXD2930BR | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:GPS LSI with Built-in 32-bit RISC CPU |
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