TLV320AIC3120: I2S mode and DSP mode

Chandra Dheeraj Paluru

Prodigy 60 points

Part Number: TLV320AIC3120

Hi,

The data sheet says there are two modes

1) I2S

2) DSP

whats the difference between these two?

Does that mean we can not use the features of DSP when we are interfacing the codec to host controller through I2S interface?

over 1 year ago

+1 Daveon Douglas over 1 year ago

TI__Genius 15640 points

Hi Chandra,

The datasheet explains the difference in detail in section 7.3.15. High level, in I2S mode the left and right channel data is read on the rising or falling edge of WCLK whereas DSP the left/right channel data is read subsequent of the other instantly following pulse of WCLK.

In addition, you have to choose DSP or I2S serial interface when configuring the device in page 0, register 27 (D7–D6).

0 Chandra Dheeraj Paluru over 1 year ago in reply to Daveon Douglas

Prodigy 60 points

Thank you. I realized, DSP and I2S are two different protocols. It has nothing to do with MiniDSP settings.

Audio

Audio forum

TLV320AIC3120: I2S mode and DSP mode