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參數(shù)資料
| 型號(hào)： | 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)： | 26/65頁 |
| 文件大小： | 611K |
| 代理商： | CXD2724AQ-1 |
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CXD2724AQ-1
7. Coefficient RAM/ROM
When the coefficient RAM is selected in microcomputer interface transfer mode, the various application
functions can be turned on and off, and the coefficient parameters such as each section's volume and delay
time can be set.
Coefficient RAM addresses other than those given in these specifications are "don't care". However, the RAM
is not cleared entirely when this LSI is reset, so there are no initial values as for the setup register. Be sure to
set all of the necessary data; otherwise misoperation may result.
(1) Configuration
The coefficient RAM and ROM have a capacity of 256 words
×
16 bits each. However, the address space for
the coefficient data is from 00H to ffH (256 words), so it is not possible to access all of the coefficient RAM and
ROM data at the same time. That is to say, of the total 512 words in both the coefficient RAM and ROM, only
the specified 256 words can be handled.
The coefficient RAM and ROM areas are allocated by setting SQD02 to SQD00 of setup register Field D.
Coefficient data transferred via the microcomputer interface is stored only in the coefficient RAM area specified
by these bits.
(Even if a ROM area address is specified and transfer is performed, the transfer is ignored.)
AAA
AAA
AAA
AAA
AAA
+
=
ROM
RAM
ROM
RAM
c0H
ffH
00H
bfH
00H
bfH
c0H
ffH
Coefficient address space
Fig. 7-1. Coefficient Data ROM/RAM Allocation when SQD02 to SQD00 are Set to "010" (Setting Example)
The contents of the data transferred to the coefficient RAM area differ for each mode. (See "8. Applications" for
the detailed contents.) The RAM area may also differ, so SQD02 to SQD00 must be sent when switching the
mode.
SQD02 to SQD00
111
100
111
Remarks
00 to ff = Coefficient RAM area
80 to ff = Coefficient RAM area
00 to ff = Coefficient RAM area
Mode
Pro Logic + simple SFC mode
Virtual Dolby Surround mode
SFC mode
Setting item
Table 7-1. Coefficient RAM Area
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相關(guān)代理商/技術(shù)參數(shù) |
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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 |
| CXD2728Q | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:Single-Chip Dolby Pro Logic Surround Decoder |
| CXD2917 | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:DIGITAL AUDIO DATA MODULATION AND TRANSMISSION |
| 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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