Architecture and method for flushing non-transmitted portions of a data frame from a transmitted FIFO buffer
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United States of America Patent
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Apr 1, 2003
Grant Date -
N/A
app pub date -
Jul 2, 1999
filing date -
Jul 2, 1999
priority date (Note) -
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Abstract
A network switch in a packet switched network includes a plurality of network switch ports, each configured for sending and receiving data packets between a medium interface and the network switch. The network switch port includes an IEEE 802.3 compliant transmit state machine and receive state machine configured for transmitting and receiving network data to and from a medium interface, such as a reduced medium independent interface, respectively. The network switch port also includes a memory management unit configured for selectively transferring the network data between the transmit and receive state machines and a random access transmit buffer and a random access receive buffer, respectively. The transmit state machine outputs a flush transmit buffer signal to the transmit memory management unit in response to a detected error in transmitting the transmit data. The transmit memory management unit, in response to the flush transmit buffer signal, sets an incremented transmit buffer pointer value to a buffer pointer value corresponding to a next transmit data stored in the transmit buffer.
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