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資源簡介

TI TLV320ADC3101音頻ADC采樣芯片驅(qū)動代碼。芯片支持三路立體輸入,一路IIS輸出。 代碼中是一路立體聲單端輸入和一路立體聲差分輸入直接接入芯片,采樣后做通過IIS輸出。輸入時鐘MCLK為2M,采樣率為48KHz.BCLK輸出3.072M,WCLK輸出48KHz信號。 兩個IO口,一路輸出高點平,接指示燈,指示燈,表示芯片正常工作,一路輸出3.072MHz供其它設(shè)備做MCLK用。代碼中只做了AD采樣,采樣后通過IIS輸出。沒有做其它的DSP運算。

資源截圖

代碼片段和文件信息

#include?“main_def.h“
#include?“TLV320ADC3101.H“
#include?“iic_drv.h“
unsigned?char?MainVol;
unsigned?char?ChSel;

#define?PLL_P 1
#define?PLL_R 1
#define?PLL_J 49
#define?PLL_D 1520//
#define NADC 8 //ADC_CLK?=?
#define?MADC 2
#define?AOSR 128 //ADC?過采樣值
#define?IADC 0x80 //???miniDSP?Number?of?instructions??默認(rèn)值不使用
#define?BCLK_N 4
#define?CLKOUT_M?2

#define?MCLK 2000 //2000K
#define?E_PLLCLK (MCLK*PLL_R*PLL_J*PLL_D/10000/PLL_P)//98304K
#define?E_CODEC_CLKIN E_PLLCLK
#define?E_ADCCLK (E_PLLCLK/NADC) //12288K
#define?E_ADCMODCLK (E_ADCCLK/MADC) //6114K
#define?E_ADC_Fs (E_ADCCLK/AOSR) //48K
#define?BCLK (E_ADCCLK/BCLK_N) //3.072M
#define?OUTCLK (E_ADCMODCLK/CLKOUT_M) //3.072M

unsigned?char?code?E_CODE_INIT0[]=
{
0x00//PAGE
ENCODE_SOFT_RESET //RST
0x20 //Rev?ID?=?0x20
0x00
SET_PLL_CLK_MCLK|SET_CODEC_CLK_PLL//4?PLL_CLKIN?=?MCLKPIN?CODEC_CLK?=?PLL_OUT
E_POWER_BIT|(PLL_P< PLL_J //6 J
PLL_D/0x100//7 D_H
PLL_D%0x100//8 D_L
0x000x000x000x000x000x000x000x000x00
E_POWER_BIT|NADC //18?NADC
E_POWER_BIT|MADC //19?MADC
AOSR //20?AOSR //ADC過采樣次數(shù)
IADC //21?IADC //Number?of?instructions?for?ADC?miniDSP????
0x04 //22?ADC?miniDSP?Engine?Decimation???默認(rèn)值
0x00 0x00
CDIVCLK_ADCMODCLK //25 CDIVCLK?=?ADCMODCLK
E_POWER_BIT|CLKOUT_M //26?CLKOUT?DIV?M?=?2;?E_ADCMODCLK/2=?3.072M?用作功放MCLK
(AIC_IIS?|?AIC_24BIT|AIC_IIS_OUT)//27?INTERFACE_CTRL
0x00 //28?Data?Slot?Offset?Programmability?1
BDIV_CLK_ADCCLK //29?BDIV_CLKIN?=?ADCCLK=?12.288MHz
E_POWER_BIT|BCLK_N //BCLK?=?ADCCLK/4;?=?3.072M
0x00 //31?輔助音頻接口?1
0x00 //32?輔助音頻接口?2
0x00 //33?輔助音頻接口?3
0x00 //34?IIS?同步設(shè)置
0x00
0x00 //36?ADC?Flag??ReadOnly
0x00 //37?E_DSOFP2
(LEFT_RIGHT_EN|DOUT_TRI) //38?IIS_TDM //左右聲道開啟DOUT引腳非有效時高阻態(tài)
0x00 0x00 0x00
0x00 //42?Int?Flag?0;Read?Only?;讀寄存器,自動清除中斷標(biāo)志
0x00 //43?Int?Flag?1;Read?Only?;
0x00
0x00 //45?ADC?Int?Flag0;?Read?Only?;讀寄存器,自動清除中斷標(biāo)志
0x00
0x00 //47?ADC?Int?Flag0;?Read?Only
0x00 //48?INT1?Interrupt?Control
0x00 //49?INT1?Interrupt?Control
0x00
(GPIO_OUT_H) //51???GPIO2?輸出高?點LED
(GPIO_CLK_OUT) //52 GPIO1?輸出CLK?=3.072M?用于從機MCLK
(DOUT_BUS_KEEP_DIS?|?DOUT_COUT) //53?DOUT?用于IIS輸出?關(guān)閉保持寄存器
0x00 //54
0x00 0x00
0x00//57?ADC?SYNC?1
0x00//58?ADC?SYNC?2
(0x40|0x04)//59?ADC?CIC?Filter?Gain?Control?//Default
0x00
0x01 //61?PRB_R1(default)
0x00 //62?Programmable?Instruction-Mode?Control?Bits
0x000x000x000x000x000x000x00
0x000x000x000x000x000x000x000x000x000x00
0x00 //80?ADC?Digital-Microphone?Polarity?Select
(L_ADC_POWER_ON|R_ADC_POWER_ON|SOFT_STEP_HALF_STEP) //81?ADC?Digital?CTRLPOWER?0.5STEP/Fs?SoftStep(淡入淡出)
(LR_ADC_MUTE)//82?精細(xì)音量控制?default?取消Mute?0dB
0x00 //83?//左音量控制??Left?Volume(-12db~20db?0.5-Step)??default?0dB
0x00 //84?//右音量控制??Right?Volume(-12db~20db?0.5-Step)??default?0dB
0x00 //85?Left?ADC?相位補償
0x00 //86?Left

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????8256??2019-06-17?15:40??TLV320ADC3101.c

?????文件???????7312??2019-06-17?15:32??TLV320ADC3101.h

-----------?---------??----------?-----??----

????????????????15568????????????????????2


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