I2Sx_TCSR field descriptions (continued)Field DescriptionEnables/disables transmitter operation in Debug mode. The transmit bit clock is not affected by debugmode.0 Transmitter is disabled in Debug mode, after completing the current frame.1 Transmitter is enabled in Debug mode.28BCEBit Clock EnableEnables the transmit bit clock, separately from the TE. This field is automatically set whenever TE is set.When software clears this field, the transmit bit clock remains enabled, and this bit remains set, until theend of the current frame.0 Transmit bit clock is disabled.1 Transmit bit clock is enabled.27–26ReservedThis field is reserved.This read-only field is reserved and always has the value 0.25FRFIFO ResetResets the FIFO pointers. Reading this field will always return zero. FIFO pointers should only be resetwhen the transmitter is disabled or the FIFO error flag is set.0 No effect.1 FIFO reset.24SRSoftware ResetWhen set, resets the internal transmitter logic including the FIFO pointers. Software-visible registers arenot affected, except for the status registers.0 No effect.1 Software reset.23–21ReservedThis field is reserved.This read-only field is reserved and always has the value 0.20WSFWord Start FlagIndicates that the start of the configured word has been detected. Write a logic 1 to this field to clear thisflag.0 Start of word not detected.1 Start of word detected.19SEFSync Error FlagIndicates that an error in the externally-generated frame sync has been detected. Write a logic 1 to thisfield to clear this flag.0 Sync error not detected.1 Frame sync error detected.18FEFFIFO Error FlagIndicates that an enabled transmit FIFO has underrun. Write a logic 1 to this field to clear this flag.0 Transmit underrun not detected.1 Transmit underrun detected.Table continues on the next page...Chapter 40 Synchronous Audio Interface (SAI)KL27 Sub-Family Reference Manual , Rev. 5, 01/2016Freescale Semiconductor, Inc. 793
