Network device and method of controlling flow of data arranged in frames in a data-based network
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United States of America Patent
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Mar 12, 2002
Grant Date -
N/A
app pub date -
Sep 30, 1998
filing date -
Sep 30, 1998
priority date (Note) -
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Abstract
A method and network device are disclosed using a look-ahead watermark in a FIFO memory. In accordance with the present invention, a watermark interrupt is generated from a FIFO memory when data in the FIFO memory has crossed a watermark threshold. A data burst is transferred through a direct memory access unit to the FIFO memory. A look-ahead watermark flag is checked at the FIFO memory to determine if sufficient memory space exists inside the FIFO memory for an additional data burst, which is transferred through the direct memory access unit to the FIFO memory when the look-ahead watermark flag indicates that sufficient memory space is available.
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