使用2.048M晶振,3V供电.VDDD1.5V内部供电
使用CHIP_ANA_TEST1寄存器 对SGTL5000进行测试
MIC接口加信号源: 2V ,1KHz
CHIP_ANA_TEST1.TM_SELECT_MIC 置1
(Enable the mic-adc-dac-HP path)
即CHIP_ANA_TEST1.TM_SELECT_MIC=0x0001;
示波器波形为(黄色为信号源 蓝色为HPout)
[2.048m crystal oscillator,3V power supply, vddd1.5v internal power supply
The SGTL5000 is tested with the CHIP_ANA_TEST1 register
MIC interface plus signal source: 2V,1KHz
CHIP_ANA_TEST1. TM_SELECT_MIC buy 1
(to Enable the mic - adc and dac - HP path)
Namely CHIP_ANA_TEST1. TM_SELECT_MIC = 0 x0001;
Oscilloscope waveform is (yellow is the signal source and blue is HPout)]
将CHIP_ANA_TEST1.TM_ADCIN_TOHP=0x0001示波器波形为(黄色为信号源 蓝色为HPout))
输出信号已经畸变,
[Chip_ana_test1.tm_adcin_tohp =0x0001 oscilloscope waveform is (yellow is the signal source and blue is HPout))
The output signal has been distorted,]
能否告诉我哪里出了问题
这是我的寄存器配置:
[Can you tell me what went wrong
This is my register configuration:]
//电源配置
sgtl5000write(CHIP_LINREG_CTRL_ADD,0x0002); // add 0x26
sgtl5000write(CHIP_ANA_POWER_ADD,0x077FF); // add 0x30
sgtl5000write(CHIP_REF_CTRL_ADD,0x01C0); // add 0x28 //1CA //0000
sgtl5000write(CHIP_DIG_POWER_ADD,0x73); // add 0x02
HAL_Delay(400);
//时钟配置
sgtl5000write(CHIP_CLK_TOP_CTRL_ADD,0x0800); //add 0x34
while(0x0800!=sgtl5000read(CHIP_CLK_TOP_CTRL_ADD)) ;
sgtl5000write(CHIP_CLK_CTRL_ADD,0x0008);
//关闭短检测
sgtl5000write(CHIP_SHORT_CTRL_ADD,0x000A); while(0x000A!=sgtl5000read(CHIP_SHORT_CTRL_ADD)) ;
//通路选择
CHIP_ANA_CTRL.data=0x0000;
CHIP_ANA_CTRL.SELECT_HP=0x00;// headphone input.0x0 = DAC
CHIP_ANA_CTRL.SELECT_ADC=0x00;
CHIP_ANA_CTRL.MUTE_LO=0x0000;
CHIP_ANA_CTRL.MUTE_ADC=0x0000;
CHIP_ANA_CTRL.EN_ZCD_ADC=0x0001;
CHIP_ANA_CTRL.EN_ZCD_HP=0x0001;
sgtl5000write(CHIP_ANA_CTRL_ADD, CHIP_ANA_CTRL.data); // add 0x24
CHIP_SSS_CTRL.data=0x0000;
CHIP_SSS_CTRL.DAP_SELECT=0x00;//ADC
CHIP_SSS_CTRL.DAC_SELECT=0x03;//DAP
//CHIP_SSS_CTRL.DAC_SELECT=0x00;//DAP
sgtl5000write(CHIP_SSS_CTRL_ADD,CHIP_SSS_CTRL.data); // add 0x0A
//打开AVC增强
DAP_AVC_CTRL.data=sgtl5000read(DAP_AVC_CTRL_ADD);
DAP_AVC_CTRL.EN=0x01;
sgtl5000write(DAP_AVC_CTRL_ADD,DAP_AVC_CTRL.data); // add 0x0100
//打开DAP
sgtl5000write(DAP_CONTROL_ADD,0x0001); // add 0x0100
//增益调整
CHIP_MIC_CTRL.data = sgtl5000read(CHIP_MIC_CTRL_ADD);
CHIP_MIC_CTRL.BIAS_RESISTOR=0x01;//2k
CHIP_MIC_CTRL.BIAS_VOLT=0x01;//1.5V
CHIP_MIC_CTRL.GAIN = 0x0000;//0dB
sgtl5000write(CHIP_MIC_CTRL_ADD, CHIP_MIC_CTRL.data);
CHIP_ADCDAC_CTRL.data = sgtl5000read(CHIP_ADCDAC_CTRL_ADD);
CHIP_ADCDAC_CTRL.DAC_MUTE_LEFT=0x0000;// bit 2
CHIP_ADCDAC_CTRL.DAC_MUTE_RIGHT=0x0000;// bit 3
sgtl5000write(CHIP_ADCDAC_CTRL_ADD,CHIP_ADCDAC_CTRL.data);
sgtl5000write(CHIP_DAC_VOL_ADD,0x3C3C); // 0x10
//测试
CHIP_ANA_TEST1.data=0x0000;
//CHIP_ANA_TEST1.HP_CLASSAB=0x0000;
//CHIP_ANA_TEST1.VAG_CLASSA=1;
//CHIP_ANA_TEST1.TM_SELECT_MIC=0x0001;
CHIP_ANA_TEST1.TM_ADCIN_TOHP=0x0001;
//CHIP_ANA_TEST1.TM_HPCOMMON=0x0001; sgtl5000write(CHIP_ANA_TEST1_ADD,CHIP_ANA_TEST1.data);
CHIP_ANA_TEST2.data=sgtl5000read(CHIP_ANA_TEST2_ADD);
THANKS
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