生产数据
WM8940
目录
描述....................................................................................................... 1
特点............................................................................................................ 1
APPLICATIONS..................................................................................................... 1
框图................................................ ................................................ 2
目录............................................... .......................................... 3
引脚配置................................................ .......................................... 5
订购信息................................................ .................................. 5
引脚说明................................................ ................................................ 6
绝对最大额定值............................................... ......................... 7
推荐工作条件............................................... ...... 7
电气特性................................................ ..................... 8
术语............................................................................................................ 10
AUDIO PATHS概述............................................... ................................. 11
耗电量................................................ .................................... 12
信号时序要求............................................... ..................... 13
系统时钟时序............................................... .............................................. 13
音频接口时序 - 主模式............................................ .............. 13
音频接口时序 - 从模式............................................ ................. 14
控制接口时序 - 3线模式.......................................... ............ 15
控制接口时序 - 2线模式.......................................... ............ 16
设备描述................................................ ...................................... 17
引言........................................................................................................... 17
输入信号路径............................................... .................................................. .. 18
模拟数字转换器( ADC) ........................................... ................ 23
输入限制器/自动电平控制( ALC ) ......................................... ... 28
输出信号路径............................................... ................................................ 42
ANALOGUE产出................................................ ................................................. 46
输出开关......................................................................................................... 50
数字音频接口............................................... ...................................... 53
音频采样率............................................... ................................................ 57
主时钟,锁相环( PLL ) ......................................... ....... 57
扩.............................................................................................................. 60
通用输入/输出............................................. ........................... 62
控制接口................................................ ................................................ 63
3线串行控制模式............................................ .................................. 64
回读3线模式............................................ ......................................... 64
2线串行控制模式............................................ .................................. 65
复位芯片............................................... ................................................. 66
电源SUPPLIES....................................................................................................... 66
电源管理................................................ .............................................. 68
POP MINIMISATION ..................................................................................................... 69
寄存器映射................................................ .................................................. 70
寄存器位按地址.............................................. ..................................... 71
数字滤波器特性............................................... ............... 83
术语............................................................................................................ 83
DAC,滤波器响应............................................... ........................................... 84
ADC滤波器响应............................................... ........................................... 84
高通滤波器....................................................................................................... 85
PD ,版本4.3 , 2011年11月
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