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WM8985 参数 Datasheet PDF下载

WM8985图片预览
型号: WM8985
PDF下载: 下载PDF文件 查看货源
内容描述: 多媒体编解码器, D类耳机和线路输出 [Multimedia CODEC With Class D Headphone and Line Out]
分类和应用: 解码器编解码器
文件页数/大小: 118 页 / 1498 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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WM8985  
Pre-Production  
REGISTER  
ADDRESS  
BIT  
LABEL  
DEFAULT  
DESCRIPTION  
0001  
0010  
45.4us  
90.8us  
363.2us 2.62ms  
726.4us 5.26ms  
… (time doubles with every step)  
1010 23.2ms 186ms 1.348s  
Table 20 ALC Control Registers  
When the ALC is disabled, the input PGA remains at the last controlled value of the ALC. An input  
gain update must be made by writing to the INPPGAVOLL/R register bits.  
NORMAL MODE  
In normal mode, the ALC will attempt to maintain a constant signal level by increasing or decreasing  
the gain of the PGA. The following diagram shows an example of this.  
Figure 21 ALC Normal Mode Operation  
PP, Rev 3.4, October 2006  
44  
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