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參數(shù)資料
| 型號： | AK4545 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | AC97 AUDIO CODEC WITH SRC AND DIT |
| 中文描述： | AC97聲音解碼器與SRC和DIT |
| 文件頁數(shù)： | 22/33頁 |
| 文件大?。?/td> | 363K |
| 代理商： | AK4545 |
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[ASAHI KASEI] [AK4545]
MS0058-E-00
2000/11
- 22 -
n
Record Gain Register (Index 1Ch)
Mute
0
0
0
--------------------------------------------------------------
0
1
1
1
X
X
Gx3
0
0
0
Gx2
0
0
0
Gx1
0
0
1
Gx0
0
1
0
Gain
0dB
1.5dB
3.0dB
1
X
1
X
22.5dB
Mute
n
General Purpose Register (Index 20h)
The following table shows the relationship between the bit and control for several miscellaneous functions of the
AK4545.
Bit
D15
Function
Comment
POP
PCM(DAC) Bypass 3D
0= Via 3D Path, 1= 3D Bypass
DAC Feed Back Control
0=Mix, 1=DAC only
3D Stereo Enhancement
0=Off, 1=On
Mono Output Select
0=Mix, 1=Mic
Mic Select
0=Mic1, 1 =Mic2
ADC/DAC Loopback Mode
1= Loopback
Controls whether DAC output is mixed with analog inputs before
the 3D circuit (POP=0) or after the 3D circuit (POP=1)
Controls whether Mix (DFC=0) or DAC only (DFC=1) is sent to the
output
Controls whether the 3D circuit is bypassed (3D=0) or used (3D=1)
DFC
D14
3D
D13
MIX
D9
Controls whether Full Mix (Mix=0) or Mic inputs (Mix=1) is send to
MONO_OUT
Selects Mic1 input (MS=0) or Mic2 (MS=1)
MS
D8
LPBK
D7
Selects normal operation (LPBK=0) or loops ADC data directly to
DACs (LPBK=1)
Relations of control bits D15,14,13
POP
DFC
3D
X
0
0
Function
Path at selecting Stereo Mixer record(1Ah register = 0505h)
3D bypass to Volumes ( Normal )
Mixer
à
Vol
Analog INPUT
(Line,CD,Mic..)
Mixer
DAC
Volume
ADC
Line Out
S_DATA_IN
0
0
1
3D output to Volumes
Mixer
à
3D
à
Vol
Analog INPUT
(Line,CD,Mic..)
Mixer
DAC
Volume
ADC
Line Out
S_DATA_IN
3D
1
0
1
( 3D out + DAC ) to Volumes
( Mixer(w/0 DAC) + DAC )
à
Vol
Analog INPUT
(Line,CD,Mic..)
Mixer
DAC
Volume
ADC
Line Out
S_DATA_IN
3D
X
1
X
Only DAC fed to Volumes
DAC
à
Vol
Then the path from DAC to Mixer is
cut.
Analog INPUT
(Line,CD,Mic..)
Mixer
DAC
Volume
ADC
Line Out
S_DATA_IN
D13(3D) will activate the AKMs 3D enhancement.
LPBK(ADC/DAC Loopback Mode) bit enables to output ADC data to DAC
.
While this function is used, the
sample rates of ADC and DAC must be set to 48KHz.
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|---|---|
| AK4545VQ | AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4551 | LOW POWER & SMALL PACKAGE 20BIT CODEC |
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| AK4554 | Low Power & Small Package 16bit ツヒ CODEC |
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相關(guān)代理商/技術(shù)參數(shù) |
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| AK4545VQ | 制造商:AKM 制造商全稱:AKM 功能描述:AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4550 | 制造商:AKM 制造商全稱:AKM 功能描述:EVALUATION BOARD REV.C FOR AK4550 |
| AK4550VT | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER & SMALL PACKAGE 16BIT CODEC |
| AK4550VT-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
| AK4550VTP-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:16BIT 3V |
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