Hi :
We use the TAS5717 as the Audio DSP & AMP, and there has the noise (sound like the current noise, fix frequency), the earphone and speaker both have.
The attachment is the schematic and register map, pls take a review them have any wrong or not.
The below is the method that we have been verify and no any effect:
1. Use the external power to supply the power of AVDD(Pin 8 & 13);
2. Change the capacitor C31 from 0.1uF to 1uF;
3. Cut the data line of I2S input, no any effect, but if cut the Bclk of I2S input, earphone will be works well without noise;
4. I2S configure: 32bit, LRCLK: 48K; Bclk: 3.072MHz, MCLK: 24.576MHz;
5. below the pic is the waveform when don't has the noise, test point : nearly the earphone jack, after CE19.
6. below the pic is the waveform when has the noise, test point : nearly the earphone jack, after CE19.
Below is the schematic and register map.
{1B,00}
{46,00,02,00,03}
{1B,00}
{03,80}
{11,B8}
{12,60}
{13,A0}
{14,48}
{1C,07}
{0A,30}
{0E,F1}
{50,0F,70,80,10}
{25,01,02,13,45}
{70,00,80,00,00}
{71,00,00,00,00}
{74,00,80,00,00}
{75,00,00,00,00}
{46,00,02,06,23}
{05,40}
{56,00,40,00,00}
{57,00,02,00,00}
{07,03,FF}
{40,0D,48,00,00,09,09,FF,FF}
{07,03,FF}
{07,03,FF}
{3B,00,20,00,00,00,40,00,00}
{07,03,FF}
{07,03,FF}
{3C,00,00,10,00,FF,FF,FF,FD}
{07,03,FF}
{07,03,FF}
{43,0D,48,00,00,04,38,87,4E}
{07,03,FF}
{07,03,FF}
{3E,00,00,10,00,00,7F,FF,00}
{07,03,FF}
{07,03,FF}
{3F,00,00,10,00,FF,FF,FF,FD}
{07,03,FF}
{51,00,80,00,00,00,00,00,00}
{52,00,80,00,00,00,00,00,00}
{58,00,7C,7E,7B,0F,07,03,0A,00,7C,7E,7B,00,F8,E4,62,0F,86,EA,75}
{59,00,7C,7E,7B,0F,07,03,0A,00,7C,7E,7B,00,F8,E4,62,0F,86,EA,75}
{5A,00,00,0C,4A,00,00,18,94,00,00,0C,4A,00,F8,E4,62,0F,86,EA,75}
{5B,00,00,0C,4A,00,00,18,94,00,00,0C,4A,00,F8,E4,62,0F,86,EA,75}
{26,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{30,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{73,00,80,00,00}
{72,00,80,00,00}
{76,00,80,00,00}
{77,00,80,00,00}
{4F,00,00,00,06}
{6A,00,0C,CC,CC,00,73,33,34}
{27,00,7F,A2,BC,0F,00,BA,87,00,7F,A2,BC,00,FF,44,4A,0F,80,B9,58}
{28,00,80,1E,2C,0F,01,4C,B4,00,7E,A1,B2,00,FE,B3,4C,0F,81,40,22}
{29,00,7E,C2,5B,0F,0C,D1,59,00,75,2C,CC,00,F3,2E,A7,0F,8C,10,D8}
{2A,00,80,27,B2,0F,00,C4,FD,00,7F,17,D9,00,FF,3B,03,0F,80,C0,75}
{2B,00,75,BC,60,00,00,00,00,00,43,F9,8E,00,00,00,00,0F,C6,4A,11}
{2C,00,82,22,AE,0F,63,BB,31,00,5A,DC,A9,00,9C,44,CF,0F,A3,00,A8}
{2D,00,7D,89,68,0F,24,44,99,00,6A,82,8F,00,DB,BB,67,0F,97,F4,09}
{2E,00,7F,D2,3E,0F,00,EC,2E,00,7F,5C,AA,00,FF,13,D2,0F,80,D1,18}
{2F,00,7F,1C,B1,0F,02,79,88,00,7E,6A,47,00,FD,86,78,0F,82,79,08}
{31,00,7F,A2,BC,0F,00,BA,87,00,7F,A2,BC,00,FF,44,4A,0F,80,B9,58}
{32,00,80,1E,2C,0F,01,4C,B4,00,7E,A1,B2,00,FE,B3,4C,0F,81,40,22}
{33,00,7E,C2,5B,0F,0C,D1,59,00,75,2C,CC,00,F3,2E,A7,0F,8C,10,D8}
{34,00,80,27,B2,0F,00,C4,FD,00,7F,17,D9,00,FF,3B,03,0F,80,C0,75}
{35,00,75,BC,60,00,00,00,00,00,43,F9,8E,00,00,00,00,0F,C6,4A,11}
{36,00,82,22,AE,0F,63,BB,31,00,5A,DC,A9,00,9C,44,CF,0F,A3,00,A8}
{37,00,7D,89,68,0F,24,44,99,00,6A,82,8F,00,DB,BB,67,0F,97,F4,09}
{38,00,7F,D2,3E,0F,00,EC,2E,00,7F,5C,AA,00,FF,13,D2,0F,80,D1,18}
{39,00,7F,1C,B1,0F,02,79,88,00,7E,6A,47,00,FD,86,78,0F,82,79,08}
{07,03,FF}
{58,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{59,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{5A,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{5B,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{5C,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{5D,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{5E,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{5F,00,80,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00}
{51,00,00,00,00,00,80,00,00}
{52,00,00,00,00,00,80,00,00}
{11,AC}
{12,54}
{13,AC}
{14,54}
{3E,00,08,00,00,ff,f8,00,00}
{3F,00,00,88,40,ff,ff,fc,96}
{3B,00,08,00,00,ff,f8,00,00}
{43,06,E4,00,00}
{07,00,48}
{05,00}