參數(shù)資料
型號(hào): AK4640
廠(chǎng)商: Asahi Kasei Microsystems Co.,Ltd
元件分類(lèi): 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(yè)數(shù): 72/76頁(yè)
文件大?。?/td> 634K
代理商: AK4640
ASAHI KASEI
[AK4640]
MS0273-E-00
2004/03
- 72 -
3. External clock mode
MCKPD bit
(Addr:01H, D7)
External MCLK
Input
Exam ple :
(1) Addr:01H, Data:80H
(2) Stop external clock
Figure 55. Stop of Clock Sequence(3)
<Example>
(1) Pull down the XTI pin : MCKPD = “0”
“1”
When the external MCKI becomes Hi-Z or the external MCKI is input by AC couple, MCKI pin should be
pulled down.
(2) Stop an external MCKI
Power down
Power down VCOM(PMVCM= “1”
“0”) after all blocks except VCOM are powered down and MCKI stops. The
AK4640 is also powered-down by PDN pin = “L”. When PDN pin = “L”, the registers are initialized.
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