PCM3070 compatibility with CP2114

Hi Rehan,

From what I see in the data sheet it states it supports 24-bit I2S, which our part also supports. As long as the I2C communication can be configured to operate the way our parts require, which his within the I2C standard, just a certain way of ordering register addresses and data, then the parts should work together.

Justin

Hi Justin,

Thank you for your kind reply.

I want to use this chip in such a manner that it will take 6 mono inputs single ended. Then it will convert the 6 mono audio signals to I2S format and then it will transfer that data to CP2114 which will convert the data into USB format.

Now that data will be given to a PC. Is it possible that 6 different persons can hear 6 different audio inputs through a smart application that will separate the 6 mono inputs from that single USB stream coming from CP2114?

This is very important for me to know.

Regards,

Rehan.

Hi Rehan,

The PCM3070 can has 2 ADC Channels and therefore can only output 2 channels digitally, but can mix 3 stereo channels together into one stereo pair. If you want to be able to handle 6 channels separately , then you will need a part or multiple parts that will have 6 ADCs. I would suggest looking at the PCM186X series. You could combine a PCM1864 or PCM1865 (both 4 channels) with a PCM1862 or PCM1863 (both 2 channels). These parts are all software controlled have the option of outputting the channels on 3 separate I2S data lines or operate the I2S bus in TDM mode which only uses 1 I2S data line. To operate in TDM mode, BCK must operate at 256*Fs, which allows up to 8 channels of audio to be transmitted in each LRCK period. The problem with this is that I do not see support for TDM in the CP2114 data sheet, and the CP2114 only has one I2S data line in. If you want to handle 6 channels of Audio over USB you need to investigate the CP2114 further.

Justin