SWCU191 February 2022 CC1311P3 , CC1311R3 , CC2651P3 , CC2651R3 , CC2651R3SIPA
The samplestamp generator counts frames (WCLK periods) and 48 MHz clock cycles (crystal oscillator periods) within each frame:
Software can modify the value of I2S:STMPWCNT by writing an absolute value to I2S:STMPWSET or a relative value to I2S:STMPWADD.