aic23.h

CHP 2 - Real-Time Digital Signal Processing: Implementations and Applications, Second Edition by Sen

// 
//  Project: Experiment 2.10.7 Use AIC23 via McBSP - Chapter 2 
//  File name: aic23.h   
//
//  Description: This is the C header file for aic23 experiment
//
//  For the book "Real Time Digital Signal Processing: 
//                Implementation and Application, 2nd Ed"
//                By Sen M. Kuo, Bob H. Lee, and Wenshun Tian
//                Publisher: John Wiley and Sons, Ltd
//
//  Tools used: CCS v.2.12.07
//              TMS320VC5510 DSK Rev-C
//

// AIC23 Register definition: TLV320AIC23B  
#define AIC23_LEFT_INPUT_VOL             (0<<9)
#define AIC23_RIGHT_INPUT_VOL            (1<<9)
#define AIC23_LEFT_HEADPHONE_VOL         (2<<9)
#define AIC23_RIGHT_HEADPHONE_VOL        (3<<9)
#define AIC23_ANALOG_AUDIO_PATH_CTL      (4<<9)
#define AIC23_DIGITAL_AUDIO_PATH_CTL     (5<<9)
#define AIC23_POWERDOWN_CTL              (6<<9)
#define AIC23_DIGITAL_AUDIO_IF_FMT       (7<<9)
#define AIC23_SAMPLERATE_CTL             (8<<9)
#define AIC23_DIGITAL_IF_ACTIVATION      (9<<9)
#define AIC23_RESET                      (15<<9)

// AIC23 initialization values
#define AIC23_LEFT_INVOL_INIT_VAL    0x017   
            // LRS[8]       0        Simultaneous left/right volume: disabled 
            // LIM[7]       0        Left line input mute: disabled           
            // LIV[4:0] 10111        Left line input volume: 0 dB             

#define AIC23_RIGHT_INVOL_INIT_VAL   0x017   
            // RLS[8]       0        Simultaneous right/left volume: disabled 
            // RIM[7]       0        Right line input mute: disabled    
            // RIV[4:0] 10111        Right line input volume: 0 dB

#define AIC23_LEFT_HP_INIT_VAL       0x1F9   
            // LRS[8]         1      Simultaneous left/right volume: enabled 
            // LZC[7]         1      Left channel zero-cross detect: enabled
            // LHV[6:0] 1111001      Left headphone volume: 0 dB

#define AIC23_RIGHT_HP_INIT_VAL      0x1F9
            // RLS            1      Simultaneous right/left volume: enabled
            // RZC            1      Right channel zero-cross detect: enabled
            // RHV[6:0] 1111001      Right headphone volume: 0 dB 

#define AIC23_ANALOG_PATH_INIT_VAL   0x014
            // STA[8:6]     000      Sidetone attenuation: -6 dB 
            // STE[5]         0      Sidetone: disabled 
            // DAC[4]         1      DAC: selected 
            // BYP[3]         0      Bypass: off 
            // INSEL[2]       1      Input select for ADC: line 
            // MICM[1]        0      Microphone mute: disabled 
            // MICB[0]        0      Microphone boost: enabled 

#define AIC23_DIGITAL_PATH_INIT_VAL  0x000
            // DACM[3]        0      DAC soft mute: disabled 
            // DEEMP[2:1]    00      Deemphasis control: disabled 
            // ADCHP[0]       0      ADC high-pass filter: disabled 

#define AIC23_POWERDOWN_INIT_VAL     0x000   
            // OFF[7]         0      Device power: on 
            // CLK[6]         0      Clock: on 
            // OSC[5]         0      Oscillator: on 
            // OUT[4]         0      Outputs: on 
            // DAC[3]         0      DAC: on 
            // ADC[2]         0      ADC: on 
            // MIC[1]         0      Microphone: on 
            // LINE[0]        0      Line input: on 

#define AIC23_DIGITAL_IFFMT_INIT_VAL 0x043
            // MS[6]          1      Master/slave mode: master 
            // LRSWAP[5]      0      DAC left/right swap: disabled 
            // LRP[4]         0      DAC lrp: MSB on 1st BCLK 
            // IWL[3:2]      00      Input bit length: 16 bit 
            // FOR[1:0]      11      Data format: DSP format 

#define AIC23_SAMPLERATE_INIT_VAL    0x08D   
            // CLKOUT[7]      1      Clock output divider: 2 (MCLK/2) 
            // CLKIN[6]       0      Clock input divider: 1 (MCLK)
            // SR[5:2]     0011      Sampling rate: ADC 8 kHz and DAC 8 kHz 
            // BOSR[1]        0      SBasr oversampling: 0 => 250fs (USB mode)
            // USB/N[0]       1      Clock mode select (USB/normal): USB 

#define AIC23_DIGITAL_IFACT_INIT_VAL 0x001   
            // ACT[0]         1      Active      


#define AIC23_POWERDOWN_OFF_VAL      0x0FF   
            // OFF[7]         1      Device power: off 
            // CLK[6]         1      Clock: off 
            // OSC[5]         1      Oscillator: off 
            // OUT[4]         1      Outputs: off 
            // DAC[3]         1      DAC: off 
            // ADC[2]         1      ADC: off 
            // MIC[1]         1      Microphone: off 
            // LINE[0]        1      Line input: off 

// Glabal functions
extern void  aic23Reset(void);
extern void  aic23Init(void);
extern short aic23Tx(short data);
extern void  aic23Powerdown(void);