Method and apparatus for byte rotation
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United States of America Patent
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Nov 15, 2005
Grant Date -
Nov 27, 2003
app pub date -
Jan 26, 2001
filing date -
Jan 26, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A scheme is described for distributing data operations on an irregular data stream over multiple stages of a data aligner to generate a regular data stream having continuous filled byte positions. In one particular embodiment, data alignment may involve the prediction of a rotation amount for unaligned data bytes. The rotation amount is predicted one clock cycle before actual rotation of data bytes based on the current contents of a buffer. The one cycle look ahead enables a large portion of calculations to be performed in a previous clock cycle and, thereby, may facilitate a high frequency design for a data aligner.
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