
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
frame
0–32, Default = 0 Specify the number of non-image, non-
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
Avalon-MM master interfaces
On or Off Turn on to add a separate clock signal for the
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
FIFO depth
16–1024, Default = 64 Select the FIFO depth of the write-only
Avalon-MM interface.
Write-only master interface
burst target
2–256, Default = 32 Select the burst target for the write-only
Avalon-MM interface.
Read-only master interface FIFO
depth
16–1024, Default = 64 Select the FIFO depth of the read-only
Avalon-MM interface.
Read-only master interface burst
target
2–256, Default = 32 Select the burst target for the read-only
Avalon-MM interface.
14-6
Frame Buffer Parameter Settings
UG-VIPSUITE
2015.05.04
Altera Corporation
Frame Buffer IP Cores
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