Hi Team,
My customer is considering to use TLV320AIC3105 in their system.
There are three audio paths which they think as follow,
Normal Operation Mode:
Case-1: Red solid line and Blue solid line
Analog input signals of (a) and (b) are processed with digital effect, and are outputted.
Case-2: Red dotted line and Blue dotted line
Analog input signals of (a) and (b) are converted to digital data, and are outputted through DOUT.
Digital Audio Input Mode from External Equipment:
Case-3: Green dotted line and Orange dotted line
Digital input signals of (c) and (d) from external equipment are outputted.
Q1: As case-1,
Is it possible that analog input signals of (a) and (b) are processed with ADC, digital effect and DAC, and are outputted.?
Datasheet, page 80, "Table 105. Page 0/Register 107: New Programmable ADC Digital Path and I2C Bus Condition Register", shows
When D3 is set to "1b", The programmable filter is connected to ADC output, if both DACs are powered down.
From the above description, it is impossible otherwise DACs are powered down.
If D3="1b" and DACs are powered up, what happens?
Q2: Digital microphone and analog microphone are in description of D5-D4 of "Table 105. Page 0/Register 107: New Programmable ADC Digital Path and I2C Bus Condition Register".
What are digital microphone and analog microphone?
Q3: Default coefficients are in description of D7 and D6 of D5-D4 of "Table 105. Page 0/Register 107: New Programmable ADC Digital Path and I2C Bus Condition Register".
What are default coefficients?
Q4: What is the relationship between,
Setting of D7-to-D2 of "Table 17. Page 0/Register 12: Audio Codec Digital Filter Control Register"
and
Coefficients of ADC High-Pass Filter, "Table 165. Page 1/Register 65" to "Table 176. Page 1/Register 76"
?
Thank you.
Best Regards,
Koshi Ninomiya