constant name	description
STM_LOOP_READ	Reread during loop playback
STM_LOOP_NOREAD	Do not reload during loop playback

constant name	description
STM_EXEC_COMPLETED	Access completed
STM_EXEC_PAUSE	Pause access
STM_EXEC_DOING	Accessing
STM_EXEC_WAIT	Waiting for transfer
STM_EXEC_TSKEND	End immediate return function

(2) State waiting for transfer
If the stream cannot be accessed due to the following conditions, it will be STM_EXEC_WAIT.

Transfer gate	Status
Open	-When the transfer area is full. -If there is no free space in the CD buffer before reaching the transfer start FAD.
Closed / Transfer area not registered	・ When reading of the stream is completed. -When the CD buffer is full.