Part Number: AM5728
We had a custom board of am5728 which we are using MIC3R signal alone and Head phone R/L output signals and feeding Mic Bias voltage as 3.3V . But in all possible ways we are getting at least some noise . mes We are not getting what to do circuit wise we are verified 2/3 times. Headphone output/speaker output everything is normal. We want a clean audio which here not coming any other registers do we need to configure in order to reduce the noise in mic captured input.
Please suggest us a proper way to achieve noise free audio out captured from mic/as well as Line in.
Some more information regarding this:
Amixer commands we using:
amixer -c 0 sset 'Left PGA Mixer Mic3R' on
amixer -c 0 sset 'Right PGA Mixer Mic3R' on
amixer -c 0 sset 'PGA' 40
amixer -c 0 sset 'Left PGA Mixer Line2L' on
amixer -c 0 sset 'Right PGA Mixer Line2R' on
Audio chip:
TLV320AIC3X
SDK:
05-03
Please do needful to us.
Thanks