---
name: "DPGEN_FIFO"
section: "3"
platform: "linux"
package: "alliance"
version: "5.1.1-3"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/DPGEN_FIFO"
---

# DPGEN\_FIFO(3)

FIFO Macro-Generator

## NAME

DPGEN\_FIFO - FIFO Macro-Generator

## SYNOPSIS

**#include  \<genlib.h\>**

**void GENLIB\_MACRO (DPGEN\_FIFO, char \****modelname***, long** *flags***, long** *N***);**

## DESCRIPTION

Generate a FIFO of *regNumber* words of *N* bits named *modelname*.

How it works :

- •

  datain0 and datain1 : the two write busses. Only one is used to actually write the FIFO, it is selected by the sel signal.

- •

  sel : when set to '0' the datain0 is used to write the register word, otherwise it will be datain1.

- •

  r, rok : set r when a word is requested, rok tells that a word has effectively been popped (rok == not empty).

- •

  w, wok : set w when a word is pushed, wok tells that the word has effectively been pushed (wok == not full).

### TERMINAL NAMES

- 1\.

  ck : clock signal (input, 1 bit).

- 2\.

  reset : reset signal (input, 1 bit).

- 3\.

  r : read requested (input, 1 bits).

- 4\.

  w : write requested (input, 1 bits).

- 5\.

  rok : read acknowledge (output, 1 bits).

- 6\.

  wok : write acknowledge (output, 1 bits).

- 7\.

  sel : select the write bus (input, 1 bit).

- 8\.

  datain0 :  first write bus (input, *N* bits).

- 9\.

  datain1 :  second write bus (input, *N* bits).

- 10\.

  dataout : read bus (output, *N* bits).

- 11\.

  vdd : power.

- 12\.

  vss : ground.

## EXAMPLE

```
GENLIB_MACRO(DPGEN_RF1, "model_fifox8_32"
                      , F_BEHAV|F_PLACE
                      , 32  /* Words size.      */
                      , 8   /* Number of words. */
                      );
GENLIB_LOINS( "model_fifox8_32"
            , "instance1_fifo1_32"
            , "ck"
            , "r"
            , "w"
            , "rok"
            , "wok"
            , "sel"
            , "datain0[31:0]"
            , "datain1[31:0]"
            , "dataout[31:0]"
            , "vdd", "vss", NULL
            );
```

## SEE ALSO

[**GENLIB\_MACRO**(3)](/GENLIB_MACRO/3.md), [**genlib**(1)](/genlib/1.md)