The shift registers available in Virtex®-II devices are ideal when building synchronous FIFOs. By using the flexibility of the shift register LUT primitive (SRL16), FIFOs can be built with any width while producing a 1-bit resolution. With cascaded SRL16 shift registers (SRLC16), a flexible depth in multiples of 16 is available. This document is obsolete/under obsolescence.

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