I2S TX 4 pin mode

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by vdelabouere on Wed Oct 29 13:02:19 MST 2014

I have the following I2S0 signals connections to a stereo CODEC.

I2S0_TX_MCLK connected to the CODEC
I2S0_TX_SCK connected to the CODEC
I2S0_TXWS connected to the CODEC
I2S0_TX_SDA connected to the DAC data input of the CODEC
I2S0_RX_SDA connected to the ADC data output of the CODEC

Because of this configuration, I decided to configure I2S0 transmitter as MASTER and I2S0 receiver in 4 wire mode (slave mode).
I then enable the RX interrupt for I2S0.

In this configuration I don't receive any RX interrupts !

Do you have any idea why ?
Is it some kind of limitation of the 4 wire mode ?

it doesn't really make any sense to me.