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參數(shù)資料
| 型號(hào)： | AK4640 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| 中文描述： | 16位編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植，AMPl |
| 文件頁數(shù)： | 22/76頁 |
| 文件大?。?/td> | 634K |
| 代理商： | AK4640 |
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ASAHI KASEI
[AK4640]
MS0273-E-00
2004/03
- 22 -
OPERATION OVERVIEW
Master Clock Source
The AK4640 requires a master clock (MCKI). This master clock is input to the AK4640 by connecting a X’tal oscillator
to XTI and XTO pins or by inputting an external CMOS-level clock to the XTI pin or by inputting an external clock that
is greater than 50% of the DVDD level to the XTI pin through a capacitor.
When using a X’tal oscillator, there should be capacitors between XTI/XTO pins and DVSS. When using an external
clock, there are two choices: direct, where an external clock is input directly to the XTI pin and indirect, where the
external clock is input through a capacitor.
Master Clock
X’tal Oscillator
(Figure 13)
External Clock Direct Input
(Figure 14)
Clock is input to MCKI pin.
MCKI pin is fixed to “L”.
MCKI pin is fixed to “H”.
MCKI pin is Hi-Z
AC Coupling Input
(Figure 15)
Clock is input to MCKI pin.
Clock isn’t input to MCKI pin.
Table 1. Master Clock Status by PMXTL bit and MCKPD bit
(1) X’tal Oscillator
Status
PMXTL bit
1
0
0
0
0
0
1
0
MCKPD bit
0
1
0
0/1
0
1
0
1
Oscillator ON
Oscillator OFF
XTI
XTO
AK4640
25k
(typ)
MCKPD = "0"
PMXTL = "1"
C
C
Figure 13. X’tal mode
Note: The capacitor values depend on the X’tal oscillator used. (C: typ. 10
～
30pF)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| AK4645EZ | Stereo CODEC with MIC/HP-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4640_05 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4640VG | 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VN | 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4641 | 制造商:AKM 制造商全稱:AKM 功能描述:16 BIT CODEC WITH BLUETOOTH INTERFACE |
| AK4641EN | 制造商:AKM 制造商全稱:AKM 功能描述:16bit stereo CODEC with built-in Microphone-amplifier and 16bit Mono CODEC for Bluetooth Interface. |
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