Patent
1996-07-26
1997-12-23
Dung, Dinh C.
395842, 395898, G06F 1300, G06F 1338, G06F 500
Patent
active
057015171
ABSTRACT:
A pipelined alignment shifter allows transfer of strings of bytes between memories which are non-aligned in computer systems or serial communications and networking with the memories arranged in N fields of B bits, where N and B are integers. The shifter has B copies of N-1 storage elements connected to N copies of N to 1 (N:1) multiplexers. An enable signal E is commonly transmitted to each copy of N-1 storage elements to cause each N-1 storage element, e.g., a latch or a register, to output a previously stored input and to store a corresponding input. A selection signal S indicative of the offset difference between the memories is commonly transmitted to each copy of N:1 multiplexer for realignment of non-aligned boundaries in data transfer mechanisms such as Direct Memory Access (DMA) controllers.
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Cirrus Logic Inc.
Dung Dinh C.
Kim Daniel Y. J.
Nguyen Frank D.
Turkevich Leon R.
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