Hi teams
A suspected crosstalk phenomenon is found when my customer using TLV320AIC3106.
They have configured that LINE2R and LINE1L as differential input and connected to right channel ADC and output through HPROUT.
The major register configuration is shown below:
Under this configuration, the HPLOUT should be muted but up to 300mV signal is observed in this pin.
I wondering to know are my configuration is wrong and lead to this issue?
15:0x0 :left PGA ADC is not Muted
16:0x0 :right PGA ADC is not Muted
17:0xff :MIC3L/R is not connected to the left ADC PGA
18:0xff :MIC3L/R is not connected to the right ADC PGA
19:0x7c :LINE1L is not connected to the left ADC PGA
20:0xf8 :LINE2L is not connected to the left ADC PGA
21:0xf8 :LINE1R is not connected to the left ADC PGA
22:0x7c :LINE1R is not connected to the right ADC PGA
23:0x80 :connects LINE2R to the right ADC PGA mix
24:0x80 :connects LINE1L to the right ADC PGA
45:0x0 46:0x80 :PGA_L is routed to HPLOUT 47:0x0 48:0x0 49:0x0 50:0x0 |
59:0x0 60:0x0 61:0x0 62:0x0 63:0x80 :PGA_R is routed to HPROUT 64:0x0 |