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參數(shù)資料
| 型號： | VS1003 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | Codec |
| 英文描述： | MP3 / WMA AUDIO CODEC |
| 中文描述： | MP3播放/ WMA音頻編解碼器 |
| 文件頁數(shù)： | 35/57頁 |
| 文件大小： | 456K |
| 代理商： | VS1003 |
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VLSI
Solution
y
VS1003 PRELIMINARY
VS1003
8. FUNCTIONAL DESCRIPTION
currently being decoded. After reset both registers are cleared, indicating no data has been found yet.
The “sample rate” field in SCI HDAT0 is interpreted according to the following table:
“sample rate”
ID=3 / Hz
ID=2 / Hz
ID=0,1 / Hz
3
2
1
0
-
-
-
32000
48000
44100
16000
24000
22050
8000
12000
11025
The “bitrate” field in HDAT0 is read according to the following table:
“bitrate”
ID=3 / kbit/s
forbidden
ID=0,1,2 / kbit/s
forbidden
15
14
13
12
11
10
320
256
224
192
160
128
112
96
80
64
56
48
40
32
160
144
128
112
96
80
64
56
48
40
32
24
16
9
8
7
6
5
4
3
2
1
0
8
-
-
8.6.10
SCI AIADDR (RW)
SCI AIADDR indicates the start address of the application code written earlier with SCI WRAMADDR
and SCI WRAM registers. If no application code is used, this register should not be initialized, or it
should be initialized to zero. For more details, see Application Notes for VS10XX.
8.6.11
SCI VOL (RW)
SCI VOL is a volume control for the player hardware. For each channel, a value in the range of 0..254
may be defined to set its attenuation from the maximum volume level (in 0.5 dB steps). The left channel
value is then multiplied by 256 and the values are added. Thus, maximum volume is 0 and total silence
is 0xFEFE.
Example: for a volume of -2.0 dB for the left channel and -3.5 dB for the right channel: (4*256) + 7
= 0x407. Note, that at startup volume is set to full volume. Resetting the software does not reset the
volume setting.
Version 0.92,
2005-06-07
35
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相關(guān)代理商/技術(shù)參數(shù) |
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