WM8956
目录
初步的技术数据
描述.......................................................................................................1
FEATURES.............................................................................................................1
应用.....................................................................................................1
目录............................................... .......................................... 2
PIN CONFIGURATION...........................................................................................3
订购信息................................................ .................................. 3
引脚说明................................................ ................................................ 4
绝对最大额定值............................................... .......................... 5
推荐工作条件............................................... ...... 5
电气特性................................................ ...................... 6
输出PGA增益............................................... .............................................. 10
典型功耗............................................... ..................... 11
信号时序要求............................................... ...................... 12
系统时钟时序............................................... ............................................. 12
音频接口时序 - 主模式............................................ ............. 12
音频接口时序 - 从模式............................................ ................ 13
控制接口时序 - 2线模式.......................................... ........... 14
内部上电复位电路............................................. ............. 15
设备描述................................................ ....................................... 17
INTRODUCTION.......................................................................................................... 17
输入信号PATH.................................................................................................. 18
输出信号路径............................................... ............................................... 26
ANALOGUE产出................................................ ............................................... 32
使能输出............................................... .......................................... 35
耳机输出................................................ ............................................... 36
D类扬声器输出.............................................. .................................... 37
卷更新................................................ .................................................. .. 38
耳机插孔检测............................................... ...................................... 40
热关断................................................ .............................................. 42
通用输入/输出............................................. ......................... 42
数字音频接口............................................... ....................................... 43
音频接口控制............................................... ................................... 47
时钟和采样率.............................................. ................................ 50
控制接口................................................ .............................................. 57
电源管理................................................ ............................................. 57
注册MAP...................................................................................................60
寄存器位按地址.............................................. .................................... 61
数字滤波器特性............................................... ................ 73
DAC，滤波器响应............................................... .......................................... 73
去加重滤波器响应............................................. ........................... 75
应用信息................................................ ......................... 76
推荐的外部元件............................................... ............ 76
封装图................................................ .......................................... 79
重要通知................................................ .......................................... 80
ADDRESS:................................................................................................................... 80
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工信部2007年7月，版本2.1
2
QQ：2880707522 复制
