WM8976
目录
预生产
描述.......................................................................................................1
FEATURES.............................................................................................................1
应用.....................................................................................................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
术语.......................................................................................................... 10
扬声器输出总谐波失真与功率关系............................................. ......... 11
耗电量................................................ .................................... 12
AUDIO PATHS概述............................................... .................................. 14
信号时序要求............................................... ...................... 15
系统时钟时序............................................... ............................................ 15
音频接口时序 - 主模式............................................ ............ 15
音频接口时序 - 从模式............................................ ................ 16
控制接口时序 - 3线模式.......................................... .......... 17
控制接口时序 - 2线模式.......................................... .......... 18
设备描述................................................ ....................................... 19
引言......................................................................................................... 19
输入信号路径............................................... .................................................. 21
模拟数字转换器（ ADC） ........................................... ............... 25
输入限制器/自动电平控制（ ALC ） ......................................... 29
输出信号路径............................................... .............................................. 41
3D立体声增强............................................... ..................................... 48
ANALOGUE OUTPUTS............................................................................................... 48
数字音频接口............................................... .................................... 63
音频采样率............................................... .............................................. 68
主时钟，锁相环（ PLL ） ......................................... ...... 68
COMPANDING............................................................................................................ 70
通用输入/输出............................................. ......................... 72
输出开关（插孔检测） ............................................ ......................... 73
控制INTERFACE.............................................................................................. 74
复位芯片............................................... ............................................... 75
使用的电源................................................ .................................................. .. 76
推荐的上电/掉电序列............................................ ...... 77
电源管理................................................ ............................................ 81
注册MAP...................................................................................................82
寄存器位按地址.............................................. ............................ 84
数字滤波器特性............................................... ................ 99
术语.......................................................................................................... 99
DAC，滤波器响应............................................... ........................................ 100
ADC滤波器响应............................................... ........................................ 100
HIGHPASS FILTER................................................................................................... 101
5 - BAND EQUALISER .............................................. .................................................. 102
应用信息................................................ .......................... 106
推荐的外部元件............................................... ......... 106
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PP版本3.0 2006年4月
2
QQ：2880707522 复制
