參數(shù)資料
型號(hào): AK4538
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16Bit DS CODEC with MIC/HP/SPK-AMP
中文描述: 16位副編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁(yè)數(shù): 18/70頁(yè)
文件大小: 485K
代理商: AK4538
ASAHI KASEI
[AK4538]
MS0198-E-01
2003/5
- 18 -
OPERATION OVERVIEW
n
Master Clock Source
The AK4538 requires a master clock (MCLK). This master clock is input to the AK4538 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)
Oscillator ON
Oscillator OFF
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
XTI
XTO
AK4538
25k
MCKIPD= "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
AK4538VN 16Bit DS CODEC with MIC/HP/SPK-AMP
AK4541VQ AC’97 Rev 2.1 Multimedia Audio CODEC
AK4541 AC’97 Rev 2.1 Multimedia Audio CODEC
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AK4543VQ AC’97 Rev 2.1 Multimedia Audio CODEC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4538VN 制造商:AKM 制造商全稱:AKM 功能描述:16Bit DS CODEC with MIC/HP/SPK-AMP
AK4541 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC
AK4541VQ 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC
AK4543 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC
AK4543VQ 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC