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同步FIFO存储器深度扩展的两种方法
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2009-05-25
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Applications often require FIFO buffers deeper than those offered by discrete devices. By depth expanding multiple devices,a logically deeper FIFO can be constructed. The synchronous FIFO family offers two approaches to this common
application. The CY7C42x5 family of x18 devices contain an on-chip expansion circuit, allowing very simple cascading.The CY7C42x1 family of x9 FIFOs take a very different approach since the on-chip expansion logic is not available.
Both approaches will be discussed in detail, examining the advantages and disadvantages of each.
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