WM8976
目录
生产数据
目录............................................... .......................................... 2
引脚配置................................................ .......................................... 4
订购信息................................................ .................................. 4
引脚说明................................................ ................................................ 5
绝对最大额定值............................................... ......................... 6
推荐工作条件............................................... ...... 6
电气特性................................................ ..................... 7
术语.............................................................................................................. 9
扬声器输出总谐波失真与功率关系............................................. ......... 10
耗电量................................................ .................................... 11
AUDIO PATHS概述............................................... ................................. 13
信号时序要求............................................... ..................... 14
系统时钟时序............................................... .............................................. 14
音频接口时序 - 主模式............................................ .............. 14
音频接口时序 - 从模式............................................ ................. 15
控制接口时序 - 3线模式.......................................... ............ 16
控制接口时序 - 2线模式.......................................... ............ 17
内部上电复位电路............................................. ............. 18
设备描述................................................ ...................................... 20
引言........................................................................................................... 20
输入信号路径............................................... .................................................. .. 22
模拟数字转换器（ ADC） ........................................... ................ 28
输入限制器/自动电平控制（ ALC ） ......................................... ... 32
输出信号路径............................................... ................................................ 44
3D立体声增强............................................... ....................................... 51
ANALOGUE产出................................................ ................................................. 51
数字音频接口............................................... ...................................... 66
音频采样率............................................... ................................................ 71
主时钟，锁相环（ PLL ） ......................................... ....... 71
扩.............................................................................................................. 73
通用输入/输出............................................. ........................... 75
输出开关（插孔检测） ............................................ ........................... 76
控制接口................................................ ................................................ 77
复位芯片............................................... ................................................. 78
电源SUPPLIES....................................................................................................... 79
推荐的上电/掉电序列............................................ ........ 80
电源管理................................................ .............................................. 84
寄存器映射................................................ .................................................. 85
寄存器位按地址.............................................. ..................................... 87
数字滤波器特性............................................... ............. 103
术语.......................................................................................................... 103
DAC，滤波器响应............................................... ......................................... 104
ADC滤波器响应............................................... ......................................... 104
高通滤波器..................................................................................................... 105
5 - BAND EQUALISER .............................................. .................................................. 106 ..
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PD ，版本4.5 ， 2011年11月
2
QQ：2880707522 复制
