WM8955L
目录
生产数据
描述.......................................................................................................1
FEATURES.............................................................................................................1
应用.....................................................................................................1
框图................................................ ................................................. 1
目录............................................... .......................................... 2
PIN CONFIGURATION...........................................................................................3
订购信息................................................ .................................. 3
引脚说明................................................ ................................................ 4
推荐工作条件............................................... ...... 5
电气特性................................................ ...................... 6
TERMINOLOGY............................................................................................................. 7
PGA输出线性度............................................... .......................................... 8
耳机输出THD与功率关系............................................. .............. 9
音箱总谐波失真及噪音与功耗............................................ ............. 10
耗电量................................................ .................................... 11
AUDIO PATHS概述............................................... .................................. 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.......................................... ........... 14
控制接口时序 - 2线模式.......................................... ........... 15
内部上电复位电路............................................. ............. 16
设备描述................................................ ....................................... 17
INTRODUCTION.......................................................................................................... 17
信号路径............................................................................................................. 17
线路输入和输出混频器............................................. ........................... 21
ANALOGUE产出................................................ ............................................... 24
数字音频接口............................................... ....................................... 28
主时钟，锁相环............................................ ............. 31
音频采样率............................................... ............................................... 33
控制接口................................................ .............................................. 35
供电器..................................................................................................... 36
电源管理................................................ ............................................. 37
注册MAP...................................................................................................39
数字滤波器特性............................................... ................ 40
TERMINOLOGY........................................................................................................... 40
DAC，滤波器响应............................................... .......................................... 40
应用信息................................................ ......................... 42
推荐的外部元件............................................... ............ 42
尽量减少杂音AT模拟输出........................................ 43
线路输出配置............................................... ................................ 43
耳机输出配置............................................... ................. 44
扬声器输出配置............................................... ....................... 44
包装尺寸................................................ .................................... 45
重要通知................................................ .......................................... 46
ADDRESS:................................................................................................................... 46
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PD版本4.2 2006年3月
2
QQ：2881677436 复制
