Hello,
I am developing with two TLV320AIC3101 and I am trying to do a loopback test between the two. On the input/master chip I send an analog signal to LINE2L/R and output to DOUT. I then pass WCLK/BCLK and the data to DIN on the output/slave chip. I then output the analog signal on LEFT_LOM/P and RIGHT_LOM/P however, all I hear is static on the output.
Could you please take a look at the register settings I have attached and advise if I am using the correct settings so I can determine if my problem lies with the register settings or something else (hardware related).
Thank you for your time.
Register Value Note 1 0x80 software reset 4 0x0C J = 3 5 0x05 D value (set WCLK = 48kHZ, MCLK = 27MHz) 6 0x06 D value Input/Master Chip: 19 0x7C power up adc 22 0x7C power up adc 8 0xE0 set master 15 0x00 enable pga-adc 16 0x00 enable pga-adc 17 0x0F enable LINE2L 18 0xF0 enable LINE2R Output/Slave Chip 7 0x0A DAC set stereo, dual rate mode off 14 0x40 Stereo fully differential output configuration 37 0xC0 power up DACs 12 0x05 DAC De-emphasis 41 0x50 DAC path switch 43 0x00 DAC unmute 44 0x00 DAC unmute 86 0x09 Unmute output 93 0x09 Unmute output