參數(shù)資料
型號: AK4671EG
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/RCV/HP-AMP
中文描述: 立體聲編解碼器麥克風/垃圾車/惠普腺苷
文件頁數(shù): 111/164頁
文件大?。?/td> 1792K
代理商: AK4671EG
[AK4671]
MS0666-E-00
2007/10
- 111 -
General Purpose Output
AK4671 supports General Purpose Output Pin (GPO) to control the external component.
In the case of GPOM1 bit = “0”, GPO1 pin goes to “H” at GPOE1 bit = “1”.
GPOE1 bit
0
1
Table 90. General Purpose Output 1 Pin Control (at GPOM1 bit = “0”)
In the case of GPOM1 bit = “1”, GPO1 pin goes to “H” if the input level of the channel selected by A0 bit (SAIN1 or
SAIN2 pin) is higher than the reference voltage that is input to the SAIN3 pin. In the case of GPOM1 bit = “1”, the
reference voltage input to SAIN3 pin should be lower than 0.5 x SAVDD.
SAIN1/2 pin
GPO1 pin
< SAIN3 pin
SAIN3 pin
Table 91. General Purpose Output 1 Pin Control (at GPOM1 bit = “1”)
In the case of GPOM2 bit = “0”, GPO2 pin goes to “H” at GPOE2 bit = “0”.
GPOE2 bit
GPO2 pin
0
1
Table 92. General Purpose Output 2 Pin Control (at GPOM2 bit = “0”)
In the case of GPOM2 bit = “1”, GPO2 pin outputs the mic detection result. (
Table 21
)
Input Level of MDT pin
GPO2 pin
0.075 x AVDD
H
< 0.050 x AVDD
L
Table 21. Microphone Detection Result
GPO1 pin
L
H
(default)
L
H
(default)
L
H
(default)
DTMIC bit
1
0
Result
Mic (Headset)
No Mic (Headphone)
相關PDF資料
PDF描述
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