Removing upstream dead cycles in a data communications bus
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United States of America Patent
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Nov 15, 2016
Grant Date -
Oct 8, 2015
app pub date -
Dec 22, 2011
filing date -
Dec 22, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Dead cycles are removed from an upstream side of a data communications bus. In one example, data symbols are received on clock cycles from lanes of a peripheral device bus having dead cycles. The data symbols are sent upstream on the clock cycles. The start of a packet in the received data symbols is detected and the sending of the data symbols is stalled before sending the start of the packet until additional cycles of data are written into a buffer. Logical idle symbols are sent upstream in place of the data during the stalling. The start of the packet sent after the additional cycles of data are read into the buffer. When a dead cycle is detected during the packet, then a buffered cycle of data is sent upstream during the dead cycle.
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