help_aic23.c

AIC23的驱动程序

/* Codec configuration settings */
AIC23_Params yourCodecCfg = { \   
    AIC23_REG0_RMK(					//  Left line input channel volume
	    AIC23_REG0_LRS_DISABLE,		//
	    AIC23_REG0_LIM_NORMAL,		//
	    AIC23_REG0_LIV_OF(0)		//0db
    ),  
    AIC23_REG1_RMK(					//Right line input channel volume
	    AIC23_REG1_RLS_DISABLE,
	    AIC23_REG1_RIM_NORMAL,
	    AIC23_REG1_RIV_OF(0)
    ),
    AIC23_REG2_RMK(					// Left channel headphone volume
	    AIC23_REG2_LRS_DISABLE,
	    AIC23_REG2_LZC_ON,
	    AIC23_REG2_LHV_OF(0)
    ), 
    AIC23_REG3_RMK(					//Right channel headphone volume
	    AIC23_REG3_RLS_DISABLE,
	    AIC23_REG3_RZC_ON,
	    AIC23_REG3_RHV_OF(0)
    ),
    AIC23_REG4_RMK(					//Analog audio path control
	    AIC23_REG4_SIDETONE_DISABLE,
	    AIC23_REG4_DAC_ON,
	    AIC23_REG4_BYP_DISABLE,
	    AIC23_REG4_INSEL_LINE,
	    AIC23_REG4_MICM_NORMAL,
	    AIC23_REG4_MICB_0DB
    ),
    0x0000,  /* reg5  Digital audio path control */     \
    0x0000,  /* reg6  Power down control */             \
    0x0043,  /* reg7  Digital audio interface format */ \
    0x000d,  /* reg8  Sample rate control */            \
    0x0001   /* reg9  Digital interface activation */   \
};



/* The eighth register of CODEC determine the Codec sample rate
 * Refrence the following table:
 *       Sample Rate     REG VALUE[对于目标板没有使用CLKOUT就没有差别]          
 * ---------------------------------------------
 *			96KHz		0X001D/0X009D
 *			48KHz		0X0001/0X0081
 *			44.1KHz		0X0023/0X00A3
 *			32KHz		0X0019/0X0099
 *			24KHz		0X0041/0X00C1
 *			16KHz		0X0059/0X00D9
 *			8KHz		0X000D/0X008D
 * ----------------------------------------------
 */


AIC23_Params yourCodecCfg = { 
    AIC23_9BITWORD(         /* REG 0: left input ch. volume control */    \
        0,                  /* simultaneous left/right volume: disabled*/ \
        0,                  /* left line input mute: disabled */          \
        0,0,                /* reserved */                                \
        1,0,1,1,1           /* left line input volume: 0 dB */            \
    )                                                                     
    AIC23_9BITWORD(         /* REG 1: right input ch. volume control*/    \
        0,                  /* simultaneous right/left volume: disabled*/ \
        0,                  /* right line input mute: disabled */         \
        0,0,                /* reserved */                                \
        1,0,1,1,1           /* right line input volume: 0 dB */           \
    )
    AIC23_9BITWORD(         /* REG 2: left ch. headphone volume control*/ \
        1,                  /* simultaneous left/right volume: enabled */ \
        1,                  /* left channel zero-cross detect: enabled */ \
        1,1,1,1,0,0,1       /* left headphone volume: 0 dB */             \
    )
    AIC23_9BITWORD(         /* REG 3: right ch. headphone volume ctrl */  \
        1,                  /* simultaneous right/left volume: enabled */ \
        1,                  /* right channel zero-cross detect: enabled*/ \
        1,1,1,1,0,0,1       /* right headphone volume: 0 dB */            \
    )
    AIC23_9BITWORD(         /* REG 4: analog audio path control */        \
        0,                  /* reserved */                                \
        0,0,                /* sidetone attenuation: 6 dB */              \
        0,                  /* sidetone: disabled */                      \
        1,                  /* DAC: selected */                           \
        0,                  /* bypass: off */                             \
        0,                  /* input select for ADC: line */              \
        0,                  /* microphone mute: disabled */               \
        1                   /* microphone boost: enabled */               \
    )
    AIC23_9BITWORD(         /* REG 5: digital audio path control */       \
        0,0,0,0,0,          /* reserved */                                \
        0,                  /* DAC soft mute: disabled */                 \
        0,0,                /* deemphasis control: 48khz */             \
        0                   /* ADC high-pass filter: disabled */          \
    )                                                                     
    AIC23_9BITWORD(         /* REG 6: power down control */               \
        0,                  /* reserved */                                \
        0,                  /* device power: on (i.e. not off) */         \
        0,                  /* clock: on */                               \
        0,                  /* oscillator: on */                          \
        0,                  /* outputs: on */                             \
        0,                  /* DAC: on */                                 \
        0,                  /* ADC: on */                                 \
        0,                  /* microphone: on */                          \
        0                   /* line input: on */                          \
    )
    AIC23_9BITWORD(         /* REG 7: digital audio interf. format ctrl*/ \
        0,0,                /* reserved */                                \
        1,                  /* master/slave mode: master */               \
        0,                  /* DEC left/right swap: disabled */           \
        0,                  /* no delay before transmitting MSB */        \
        0,0,                /* input bit length: 16 bit */                \
        1,1                 /* data format: DSP format */                 \
    )                                                                     
    AIC23_9BITWORD(         /* REG 8: sample rate control */              \
        0,                  /* reserved */                                \
        0,                  /* clock output divider: 1 (MCLK) */        \
        0,                  /* clock input  divider: 1 (MCLK) */        \
        0,0,1,1,0,          /* sampling rate: ADC 8kHz DAC 8kHz */        \
        1                   /* clock mode select (USB/normal): USB */     \
    )