build_periodic_ftd

	BUILD_PERIODIC_FTD(frequency)

	This macro builds a periodic Frequency Time Descriptor (FTD) value.

	frequency	frequency in Hz

	This macro is found in: macro_h

	Related macros:

	IS_PERIODIC_FTD, BUILD_EVENT_FTD, BUILD_EVENT_PLUS_DELAY_FTD,
	EXTRACT_FTD_EVENT, EXTRACT_FTD_EVENT_DELAY, IS_EVENT_FTD,
	IS_ONE_SHOT_FTD