We would like to interface an external codec in TDM mode with the SSI interface. RXDSEL field in the AUDMUX data control register specifies the source port for data. If AUDMUX3 is used as external interface to the codec, RXDSEL = 010 for the internal SSI. But what should be the RXDSEL value for AUDMUX3 which is used for the external interface with the codec. The data source for AUDMUX3 is the actually the codec. How to set this value ? I would also like any additional inputs/experiences for TDM mode configuration of the SSI interface in IMX6Q.