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8:0
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FIFO Fill Level
In master cores the starting level of the clock-domain crossing (CDC) FIFO can be set using this register. By default the CDC FIFO fills to fill_level=64 before reading is enabled. The half full level for Standard CDC FIFO depth is 64 and for Extended CDC FIFO is 256. These values maximize the cores ability to buffer against transmission line jitter. To reduce latency, at the expense of reduced cable length support, the FIFO fill level can be reduced.
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