UG-VIPSUITE	Frame Buffer Parameter Settings	14-5
	2015.01.23

Frame Buffer Parameter Settings

Table 14-2: Frame Buffer Parameter Settings

Parameter		Value		Description
Maximum image width		32–2600, Default = 640		Specify the maximum frame width in pixels.
Maximum image height		32–2600, Default = 480		Specify the maximum progressive frame
				height in pixels.
				In general, you should set this value to the full
				height of a progressive frame.
				However, you can set the value to the height
				of an interlaced field for double-buffering on
				a field-by-field basis when the support for
				interlaced inputs has been turned off.
Bits per pixel per color plane		4–20, Default = 8		Select the number of bits per pixel (per color
				plane).
Number of color planes in		1–3, Default = 3		Select the number of color planes that are
sequence				sent in sequence.
Number of color planes in		1–3, Default = 1		Select the number of color planes in parallel.
parallel
Frame dropping		On or Off		Turn on to allow frame dropping.
Discard invalid frames/fields		On or Off		Turn on to drop image data packets that have
				lengths which are not compatible with the
				dimensions declared in the last control
				packet.
Frame repetition		On or Off		Turn on to allow frame repetition.
Run-time control for the writer		On or Off		Turn on to enable run-time control for the
thread				write interfaces.
Run-time control for the reader		On or Off		Turn on to enable run-time control for the
thread				read interfaces.
Support for locked frame rate		On or Off		Turn on to add an Avalon-MM slave
conversion				interface that synchronizes the input and
				output frame rates.
				Note: You can only turn on this
				parameter if you also turn on
				Frame dropping, Frame
				repetition, and Run-time control
				for the writer thread parameters.

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14-6		Frame Buffer Parameter Settings				UG-VIPSUITE
					2015.01.23
		Parameter		Value		Description
		Support for interlaced streams		On or Off		Turn on to support consistent dropping and
						repeating of fields in an interlaced video
						stream.
						Note: You must not turn on this
						parameter for double-buffering of
						an interlaced input stream on a
						field-by-field basis.
		Number of packets buffered per		0–32, Default = 0		Specify the number of non-image, non-
		frame				control, Avalon-ST Video packets that can be
						buffered with each frame. Older packets are
						discarded first in case of an overflow.
						Note: The Maximum packet length
						parameter is disabled when you
						specify the number of packets
						buffered per frame to 0.
		Maximum packet length		10–1024, Default = 10		Select the maximum packet length as a
						number of symbols. The minimum value is
						10 because this is the size of an Avalon-ST
						control packet (header included). Extra
						samples are discarded if packets are larger
						than allowed.
		Use separate clocks for the		On or Off		Turn on to add a separate clock signal for the
		Avalon-MM master interfaces				Avalon-MM master interfaces so that they
						can run at a different speed to the Avalon-ST
						processing. This decouples the memory speed
						from the speed of the data path and is
						sometimes necessary to reach performance
						target.
		Avalon-MM master ports width		16–256, Default = 64		Specify the width of the Avalon-MM ports
						used to access external memory.
		Write-only master interface		16–1024, Default = 64		Select the FIFO depth of the write-only
		FIFO depth				Avalon-MM interface.
		Write-only master interface		2–256, Default = 32		Select the burst target for the write-only
		burst target				Avalon-MM interface.
		Read-only master interface FIFO		16–1024, Default = 64		Select the FIFO depth of the read-only
		depth				Avalon-MM interface.
		Read-only master interface burst		2–256, Default = 32		Select the burst target for the read-only
		target				Avalon-MM interface.

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UG-VIPSUITE					Frame Buffer Parameter Settings	14-7
2015.01.23
	Parameter		Value		Description
	Base address of frame buffers		Any 32-bit value,		Select a hexadecimal address of the frame
			Default = 0×00000000		buffers in external memory when buffering is
					used.
					The number of frame buffers and the total
					memory required at the specified base
					address is displayed under the base address.
	Align read/write bursts with		On or Off		Turn on to avoid initiating read and write
	burst boundaries				bursts at a position that would cause the
					crossing of a memory row boundary.
	Table 14-3: Frame Buffer II Parameter Settings

Note: Non-video packets are not currently supported.

Parameter		Value		Description
Maximum frame width		32–7680, Default =		Specify the maximum frame width in pixels.
		1920
Maximum frame height		32–7680, Default =		Specify the maximum progressive frame
		1080		height in pixels.
Bits per pixel per color plane		4–20, Default = 8		Select the number of bits per pixel (per color
				plane).
Number of color planes		1–4, Default = 3		Select the number of color planes that are
				sent in sequence.
Color planes transmitted in		On		Color planes in sequence are not supported.
parallel
Pixels in parallel		1, 2, or 4		Specify the number of pixels transmitted or
				received in parallel.
Ready latency		1		The ready latency is fixed to 1.
Use separate clocks for the		On or Off		Turn on to add a separate clock signal for the
Avalon-MM master interfaces				Avalon-MM master interfaces so that they
				can run at a different speed to the Avalon-ST
				processing. This decouples the memory speed
				from the speed of the data path and is
				sometimes necessary to reach performance
				target.
Write FIFO depth		16–1024, Default = 64		Select the FIFO depth of the write-only
				Avalon-MM interface.
Write FIFO burst target		2–256, Default = 32		Select the burst target for the write-only
				Avalon-MM interface.

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14-8		Frame Buffer Parameter Settings				UG-VIPSUITE
					2015.01.23
		Parameter		Value		Description
		Read FIFO depth		16–1024, Default = 64		Select the FIFO depth of the read-only
						Avalon-MM interface.
		Read FIFO burst target		2–256, Default = 32		Select the burst target for the read-only
						Avalon-MM interface.
		Align read/write bursts on read		On or Off		Turn on to avoid initiating read and write
		boundaries				bursts at a position that would cause the
						crossing of a memory row boundary.
		Frame buffer memory base		0×00000000		Base address shall be 0x00000000
		address
		Maximum ancillary packets per		0		Non-image, non-control, Avalon-ST Video
		frame				packets are not supported.
		Maximum length ancillary		0		Non-image, non-control, Avalon-ST Video
		packets in symbols				packets are not supported.
		Module is frame reader only		Off		Not supported.
		Module is frame writer only		Off		Not supported.
		Frame dropping		On or Off		Turn on to allow frame dropping.
		Frame repeating		On or Off		Turn on to allow frame repetition.
		Delay length (frames)		1		The delay length is fixed to 1.
		Interlace support		Off		Not supported.
		Locked rate support		Off		Not supported.
		Drop invalid frames		Off		Image data packets that have lengths which
						are not compatible with the dimensions
						declared in the last control packet may
						corrupt mixer data.
		Run-time writer control		Off		Run-time control for the write interface is not
						supported.
		Run-time reader control		Off		Run-time control for the read interface is not
						supported.
		Avalon-MM master local ports		16–256, Default = 16		Specify the width of the Avalon-MM ports
		width				used to access external memory.
		Avalon-MM slave port width		16		Slave port not supported.
		Sync master		Off		Sync master mode not supported.
		Sync slave		Off		Sync master mode not supported.

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