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https://e2e.ti.com/support/audio-group/audio/f/audio-forum/601428/aic3204-attenuation-over-24-khz
主题：TLV320AIC3204中讨论的其它部件您好，
配置AIC3204的方式如下：
;指向第0页
AC1 =#0
AR1 =#0x0
调用i2c_WriteData8
;重置编解码器
AC1 =#1
AR1 =#0x1
调用i2c_WriteData8
；指向第1页
AC1 =#0
AR1 =#0x1
调用i2c_WriteData8
;禁用DVDD的原始AVDD生成
AC1 =#1
AR1 =#0x08
调用i2c_WriteData8
;启用模拟块和LDO
AC1 =#2
AR1 =#0x01
调用i2c_WriteData8
；*******************************************************
;* PLL和时钟配置和开机
；*******************************************************
;指向第0页
AC1 =#0
AR1 =#0x0
调用i2c_WriteData8
;AIC是1.288 MHz晶体的主要运行方式
;BCLK和WCLK被设置为AIC3204 (主)- 16位字的操作
AC1 =#27
AR1 =#0x0D
调用i2c_WriteData8
;PLL设置：PLLCLK <- MCLK和CODEC _CLKIN <-PLL CLK
AC1 =#4
AR1 =#0x03
调用i2c_WriteData8
；PLL通电；PLL分压器参数：P = 1，R = 1
AC1 =#5
AR1 =#0x91
调用i2c_WriteData8
; PLL设置：J=8
AC1 =#6
AR1 =#0x08
调用i2c_WriteData8
;PLL设置：用于D=0x0780 (或1920十进制)的hI_byte(D)
AC1 =#7
；AR1 =#0x07
AR1 =#0x00
调用i2c_WriteData8
;PLL设置：用于D=0x0780的LO_BYTE(D)
AC1 =#8
；AR1 =#0x80
AR1 =#0x00
调用i2c_WriteData8
；NDAC = 2
AC1 =#11
AR1 =#0x82
调用i2c_WriteData8
;MDAC =8
AC1 =#12
AR1 =#0x88
调用i2c_WriteData8
；DOSR H (DOSR = 32)
AC1 =#13
AR1 =#0x00
调用i2c_WriteData8
；DOSR L (DOSR = 32)
AC1 =#14
AR1 =#0x20
调用i2c_WriteData8
；时钟设置寄存器11，BCLK N除法器N =7
AC1 =#30
AR1 =#0x87
调用i2c_WriteData8
;打开NADC电源并将NADC值设置为2
AC1 =#18
AR1 =#0x82
调用i2c_WriteData8
;启动mAdc并将mAdc值设置为8
AC1 =#19
AR1 =#0x88
调用i2c_WriteData8
;AOSR对于AOSR =32
AC1 =#20
AR1 =#0x20
调用i2c_WriteData8
;指向第0页
AC1 =#0
AR1 =#0x0
调用i2c_WriteData8
；DAC PRB
AC1 =#60
AR1 =#21
调用i2c_WriteData8
；ADC PRB
AC1 =#61
AR1 =#0x0E
请致电i2c_WriteData8
；***********************************************************************
;* DAC路由和通电
;***************************************************************
;选择第1页
AC1 =#0
AR1 =#0x01
调用i2c_WriteData8
;LDAC ATIR路由到HPL
AC1 =#12
AR1 =#0x08
调用i2c_WriteData8
;RDAC ATIR路由到HPR
AC1 =#13
；AR1 = 0x08
AR1 =#0x00
调用i2c_WriteData8
;选择第0页
AC1 =#0
AR1 =#0x00
调用i2c_WriteData8
;左vol=右vol
AC1 =#64
AR1 =#0x02
调用i2c_WriteData8
;左DAC增益至0dB VOL；右磁道左
AC1 =#65
;AR1 =#0x00；无DRC
AR1 = 0x18；带有DRC
调用i2c_WriteData8
；DRC
;DAC =>为左信道启用DRC，阈值=-24 db，滞后=3 dB
AC1 =#0x44
AR1 =#0x5F
调用i2c_WriteData8
;DRC保持=0 ms,增益变化率= 0.5 dB/FS'
AC1 =#0x45
AR1 =#0x00
调用i2c_WriteData8
；攻击速率=1.9531e-4 dB/帧，DRC衰减速率=2.4414e-5 dB/帧
AC1 =#0x46
AR1 =#0xB6
调用i2c_WriteData8
；结束DRC
;打开左，右数据路径并设置通道
AC1 =#63
；AR1 =#0x92
AR1 =#0xB2
调用i2c_WriteData8
;选择第1页
AC1 =#0
AR1 =#0x01
调用i2c_WriteData8
;取消静音HPL，0dB增益
AC1 =#16
AR1 =#0x00
调用i2c_WriteData8
;静音HPR，0dB增益
AC1 =#17
AR1 =#0x00；#0x40
调用i2c_WriteData8
;启动HPL
AC1 =#9
；AR1 = 0x28 --精密
AR1 =#0x30
调用i2c_WriteData8
；选择第0页
AC1 =#0
AR1 =#0x00
调用i2c_WriteData8
@BRC0_L =#0x02FF || mmap()
localrepeat {
REPEAT (#0xFFFFff)
NOP_16
NOP_16}
;*******************************************************************************
;* ADC路由和通电
;***************************************************************
;选择第1页
AC1 =#0
AR1 =#0x01
调用i2c_WriteData8
AC1 =#52
AR1 =#0x30
将i2c_WriteData8;CM_1
(通用模式)调用到40千欧的LADC_M
AC1 =#54
AR1 =#0x03
呼叫i2c_WriteData8
；MIC_PGA_L取消静音
AC1 =#0x3B
AR1 =#0x5D
呼叫i2c_WriteData8
；MIC_PGA_R取消静音
AC1 =#0x3C
AR1 =#0x80
调用i2c_WriteData8
;选择第0页
AC1 =#0
AR1 =#0x00
调用i2c_WriteData8
；Powerup左ADC
AC1 =#81
AR1 =#0x80
；AR1 =#0x8A
调用i2c_WriteData8
;取消左ADC静音和右ADC静音
AC1 =#82
；AR1 = 0x00 --精密
AR1 =#0x08
调用i2c_WriteData8
我用 函数发生器将正弦波形作为输入信号，我用示波器看到输出。
我的问题是超过24-25 kHz的信号被衰减，并且在40 kHz的频率下存在。
如何传递高达50 kHz的信号？
提前感谢
Paolo
