fifo

Namespace PoC.fifo

The namespace PoC.fifo offers different FIFO implementations.

Package(s)

The package PoC.fifo holds all component declarations for this namespace.

Entities

PoC offers FIFOs with a got-interface. This means, the current read-pointer value is available on the output. Asserting the got-input, acknoledge the processing of the current output signals and moves the read-pointer to the next value, if available.

All FIFOs implement a bidirectional flow control (put/full and valid/got). Each FIFO also offers a EmptyState (write-side) and FullState (read-side) to indicate the current fill-state.

The prefixes cc_ (common clock), dc_ (dependent clock) and ic_ (independent clock) refer to the write- and read-side clock relationship.

• fifo_cc_got implements a regular FIFO (one common clock, got-interface)

• fifo_cc_got_tempgot implements a regular FIFO (one common clock, got-interface), extended by a transactional tempgot-interface (read-side).

• fifo_cc_got_tempput implements a regular FIFO (one common clock, got-interface), extended by a transactional tempput-interface (write-side).

• fifo_dc_got implements a cross-clock FIFO (two related clocks, got-interface)

• fifo_ic_got implements a cross-clock FIFO (two independent clocks, got-interface)

• fifo_ic_assembly address-based FIFO stream assembly (two independent clocks)

  This FIFO needs to be constrained, so static timing analysis will report the correct results. See the constraint folder for applieable constraint files for your synthesis tool.

• fifo_glue implements a two-stage FIFO (one common clock, got-interface)

• fifo_shift implements a regular FIFO (one common clock, got-interface, optimized for FPGAs with shifter primitives)