ADAU1761
目录
特点................................................. ............................................. 1
应用................................................. ...................................... 1
概述................................................ ......................... 1
功能框图............................................... ............... 1
修订历史................................................ ............................... 3
规格................................................. .................................... 4
模拟性能规格........................................... 4
电源规格............................................... ......... 7
典型电流消耗............................................... 8 .....
典型的电源管理测量............................. 9
数字滤波器................................................ ............................... 10
数字输入/输出规格......................................... 10
数字时序规范............................................... .... 11
数字时序图............................................... ............ 12
绝对最大额定值............................................... ........... 14
热阻................................................ .................... 14
ESD注意事项................................................ ................................ 14
引脚配置和功能描述........................... 15
典型性能特征........................................... 17
系统结构图............................................... .................. 20
工作原理............................................... ....................... 23
启动，初始化和电源............................................ ..... 24
上电排序.............................................. ..................... 24
节电模式............................................... ............. 24
数字电源............................................... ................... 24
输入/输出电源供应器............................................. ......... 24
时钟产生和管理........................................ 24
时钟和采样率.............................................. ......... 26
核心时钟................................................ ................................... 26
采样率................................................ ............................ 27
PLL ................................................. .............................................. 27
记录信号路径............................................... ........................... 29
输入信号路径............................................... ........................ 29
模拟 - 数字转换器............................................ ....... 31
自动电平控制（ ALC ） ............................................ ....... 32
ALC参数................................................ .......................... 32
噪声门功能............................................... ................... 33
播放信号路径............................................... ....................... 35
输出信号路径............................................... .................... 35
耳机输出................................................ .................... 36
弹出式和-喀哒声抑制............................................ .......... 37
线路输出................................................ ............................... 37
控制端口................................................ ................................... 38
突发模式写入和读............................................ 38
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端口C ................................................ ........................................ 38
SPI端口................................................ ........................................ 41
串行数据输入/输出端口............................................ ........ 42
应用信息................................................ .............. 44
电源旁路电容.............................................. 44
GSM噪声滤波器............................................... ......................... 44
接地................................................. .................................. 44
裸露焊盘PCB设计.............................................. ........... 44
DSP核心................................................ ......................................... 45
信号处理................................................ ........................ 45
建筑................................................. ............................... 45
程序计数器................................................ ....................... 45
功能................................................. ....................................... 45
启动................................................. ......................................... 45
数字格式................................................ ....................... 46
编程................................................. ............................. 46
程序RAM ，参数RAM和数据RAM ..................... 47
程序RAM ................................................ ............................ 47
参数RAM ................................................ .......................... 47
数据RAM ................................................ ................................... 47
读/写数据格式............................................. ............ 47
软件安全加载................................................ ....................... 48
软件摆................................................ .............................. 49
通用输入/输出............................................ ........ 50
GPIO引脚设置从控制端口...................................... 50
控制寄存器................................................ ............................ 51
控制寄存器详细............................................... ............. 52
外形尺寸................................................ ....................... 92
订购指南................................................ .......................... 92
版本C |第92 2
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