Data transfer system for rearranging data units using intermediate temporary registers
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United States of America Patent
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Aug 27, 1991
Grant Date -
N/A
app pub date -
Mar 3, 1989
filing date -
Mar 4, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data transfer control system controls a data transfer between a source and a destination by rearranging a data arrangement of a data which is made up of data units each made up of one or a plurality of bits, and comprises an input/output interface unit for inputting the data from the source and for outputting the data to the destination, a data swap circuit coupled to the input/output interface unit for rearranging a data arrangement of the data received from the source through the input/output interface unit in terms of the data unit and for rearranging a data arrangement of the data outputted to the destination through the input/output interface unit in terms of the data unit, a temporary register for temporarily storing the data with the rearranged data arrangement obtained from the data swap circuit, and a data swap control circuit coupled to the data swap circuit for controlling the rearranging of the data arrangement in the data swap circuit responsive to a transfer information which includes at least a source address, a destination address and a transfer control information.
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