參數(shù)資料
型號(hào): VS1001
廠商: Electronic Theatre Controls, Inc.
元件分類: Codec
英文描述: MPEG AUDIO CODEC
中文描述: MPEG音頻編解碼器
文件頁(yè)數(shù): 22/39頁(yè)
文件大小: 415K
代理商: VS1001
VLSI
Solution
y
DATASHEET
VS1001
K
7. FUNCTIONAL DESCRIPTION
7.5.1
MODE (RW)
MODE is used to control the operation of VS1001k.
Bit
Name
SM DIFF
Function
differential
Value
0
1
0
1
0
1
0
0
1
0
0
0
1
0
1
0
1
0
1
0
1
Description
normal in-phase audio
left channel inverted
normal playback
fast forward on
no reset
reset
Set to 0
power on
powerdown
Set to 0
Set to 0
off
on
rising
falling
MSB first
MSB last
slave
master
512 kHz
1024 kHz
0
1
SM FFWD
fast forward
2
SM RESET
soft reset
3
4
SM UNUSED1
SM PDOWN
set to 0
powerdown
5
6
7
SM UNUSED2
SM UNUSED3
SM BASS
set to 0
set to 0
bass/treble enhancer
8
SM DACT
DCLK active
edge
Byte order on serial input bus
9
SM BYTEORD
10
SM IBMODE
input bus mode
11
SM IBCLK
input bus clk when VS1001k is master
When SM DIFF is set, the player inverts the left output. For a stereo input, this creates a virtual surround,
and for a mono input this effectively creates a differential left/right signal.
By setting SM FFWD the player starts to accept SCI data at a high speed, and just decodes the audio
headers silently without playing any data. This can be used to fast-forward data with safe landing.
Register DECODE TIME is updated during a fast-forward just as normal.
By setting SM RESET to 1, the player is reset.
SM UNUSED1 should always be set to 0.
Bit SM PDOWN overrides any other: it turns VS1001k into powerdown mode, where the only opera-
tional part is the control bus.
SM UNUSED2 and SM UNUSED3 should always be set to 0.
Bit SM BASS turns on the built-in Bass and Treble enhancer. The frequency response of the enhancer
when the sample rate is 44.1 kHz is shown in Figure 11. For other sample frequencies the response
frequence axis must be adjusted accordingly. Example: If the sample rate is 48 kHz, the 1 kHz frequency
in the figure is actually 1 kHz
×
48 kHz / 44.1 kHz = 1.09 kHz. For details of how much extra processing
Version 4.11,
2003-09-18
22
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
VS1001K 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MPEG AUDIO CODEC
VS1002D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MP3 AUDIO CODEC
VS1003 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MP3 / WMA AUDIO CODEC
VS1003-BB 制造商:Distributed By MCM 功能描述:VS1003 MP3/WMA BREAKOUT BOARD
VS1003B-L 制造商:CONSONANCE 制造商全稱:CONSONANCE 功能描述:芬蘭VLSI廠家生產(chǎn)的音頻編解碼芯片