WM8971L
目录
生产数据
描述.......................................................................................................1
FEATURES.............................................................................................................1
应用.....................................................................................................1
框图................................................ ................................................. 1
目录............................................... .......................................... 2
PIN CONFIGURATION...........................................................................................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
PGA输出线性度............................................... .......................................... 9
耳机输出THD与功率关系............................................. ............ 10
音箱总谐波失真及噪音与功耗............................................ ............. 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
内部上电复位电路............................................. ............. 17
设备描述................................................ ....................................... 18
INTRODUCTION.......................................................................................................... 18
输入信号PATH.................................................................................................. 18
自动电平控制（ ALC ） ............................................ ........................... 25
输出信号路径............................................... ............................................... 28
ANALOGUE产出................................................ ............................................... 33
使能输出............................................... .......................................... 35
耳机开关................................................ ............................................... 35
热关断................................................ .............................................. 37
耳机输出................................................ ............................................... 37
数字音频接口............................................... ....................................... 38
音频接口控制............................................... ................................... 42
时钟和采样率.............................................. ................................ 44
控制接口................................................ .............................................. 46
供电器..................................................................................................... 47
电源管理................................................ ............................................. 47
注册MAP...................................................................................................50
数字滤波器特性............................................... ................ 51
TERMINOLOGY........................................................................................................... 51
DAC，滤波器响应............................................... .......................................... 52
ADC滤波器响应............................................... .......................................... 53
去加重滤波器响应............................................. ........................... 54
高通滤波器..................................................................................................... 55
应用信息................................................ ......................... 56
推荐的外部元件............................................... ............ 56
LINE输入配置............................................... .................................... 57
麦克风输入配置............................................... ................... 57
尽量减少杂音AT模拟输出........................................ 57
电源管理的例子............................................... .......................... 58
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PD版本4.1 2005年8月
2
QQ：2880707522 复制
