Video and Vision Processing Suite Intel® FPGA IP User Guide
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48.2. Video Frame Writer IP Parameters
Parameter | Values | Description | |||
---|---|---|---|---|---|
Video Data Format | |||||
Bits per color sample | 8 to 16 | Select the number of bits per color sample. | |||
Number of color planes | 1 to 4 | Select the number of color planes per pixel. | |||
Number of pixels in parallel | 1 to 8 | Select the number of pixels in parallel. | |||
Maximum Frame Size | |||||
Maximum frame height | 32 to 16384 | Select the maximum height of frames. If you attempt to write fields or frames taller than this, they are cropped to this height. | |||
Maximum frame width | 32 to 16384 | Select the maximum width of frames. If you attempt to write fields or frames wider than this, they are cropped to this width. If you use the IP exclusively to write frames with 420 subsampling, optionally, halve the maximum frame width entry in the GUI. Halving the entry optimizes memory footprint because of the more efficient 420 pixel packing. |
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Control | |||||
Lite mode | On or off | Turn on to operate the frame writer in lite mode. | |||
Separate clock for control interface | On or off | Turn on for a separate clock for the control interface. | |||
Debug features | On or off | Turn on for debug features. | |||
Memory | |||||
Avalon memory mapped host(s) local ports width | 16, 32, 64, 128, 256, 512, 1024 | Select in bits the width of the Avalon memory-mapped host write port. You must select a width at least as wide as the Intel streaming video input tdata width. | |||
Avalon memory mapped host(s) local ports address width | 8 to 32 | Select in bits the width of the Avalon memory-mapped host write address port. It must be sufficient to fully address the last buffer. | |||
The depth of the write FIFO | 32,64,128,256,512,1024,2048 | Specify the depth of the write FIFO buffer. Each FIFO buffer entry holds one word the width of the specified Avalon memory-mapped local port width. You must specify a FIFO depth of at least twice the specified burst target so that the IP can hold at least 2 bursts at any one time. Increase the FIFO depth to improve resilience to latency on the Avalon memory-mapped interface. | |||
Avalon memory mapped write burst target | 2,4,8,16,32,64 | Select the burst target for writes. Longer bursts provide more efficiency on the bus but require more local storage in the write FIFO buffer. | |||
Packing method | Perfect, color or pixel | Perfect packing minimizes memory footprint of stored frames but increases complexity and therefore size of the frame writer slightly. Color packing leaves spaces in memory between colors if colors do not pack into | |||
Separate clock for the Avalon memory-mapped host interface(s) | On or off |
