i2s.disableTx() does not work

[AniketJangam]

Hello, I am using Adafruit_M0 board which sends a sinewave from the DMA buffer to external amplifier via I2S. I have 2 chips on the board which get triggered simultaneously. I was trying to use i2s_1.disableTx() and i2s_2.disableTx() alternately to get the sinewave on both the chips alternately, but instead I see sinewave on both chips output simultaneously. I suspect the disabling is not getting implemented. Anyone had issues with getting the disable() function to work correctly?