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參數(shù)資料
| 型號： | AK4633 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| 中文描述： | 16位單聲道編解碼器ALC的 |
| 文件頁數(shù)： | 53/82頁 |
| 文件大?。?/td> | 688K |
| 代理商： | AK4633 |
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ASAHI KASEI
[AK4633]
MS0447-E-03
2006/04
- 53 -
<Control Sequence of Speaker Amp>
Speaker-Amp can be powered-up/down by controlling the PMSPK bit. When the PMSPK bit is
“
0
”
, the SPP and SPN
pins are placed in a Hi-Z state.
When the PMSPK bit is
“
1
”
and SPPSN bit is
“
0
”
, the Speaker-amp enters power-save-mode. In this mode, the SPP pin is
placed in a Hi-Z state and the SPN pin goes to SVDD/2 voltage.
When the PMSPK bit is
“
1
”
and PDN pin is controlled from
“
L
”
to
“
H
”
, the SPP and SPN pins rise up from
power-save-mode. In this mode, the SPP pin is placed in a Hi-Z state and the SPN pin goes to SVDD/2 voltage. Because
the SPP and SPN pins rise up at power-save-mode, this mode can reduce pop noise. When the AK4633 is powered-down,
pop noise can be also reduced by first entering power-save-mode.
PMSPK bit
SPPSN bit
SPP pin
SPN pin
SVDD/2
SVDD/2
Hi-Z
Hi-Z
Hi-Z
Hi-Z
>t1(Note)
>0
(Note)
SPPSN bit should be set to
“
1
”
at more than 1ms after PMSPK bit is set to
“
1
”
. But, when BEEP Input Amp and Speaker
Amp are powered-up at the same time, SPPSN bit should be set to
“
1
”
after BEEP Input become stable. When the
resistance and capacitance of BEEP pin are R=20k
, C=0.1
μ
F, 10ms(=5
τ
) is required for BEEP Input to become stable.
Figure 42. Power-up/Power-down Timing for Speaker-Amp
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4640 | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VG | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VN | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4642EN | Stereo CODEC with MIC/HP/SPK-AMP |
| AK4643EN | Stereo CODEC with MIC/HP/RCV/SPK-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4633ENP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A |
| AK4633VN | 制造商:AKM 制造商全稱:AKM 功能描述:16bit mono CODEC with MIC/SPK amplifier. |
| AK4633VNP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A |
| AK4634 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| AK4635 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP |
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