Fifo macro-generator
#include <genlib.h>
void GENLIB_MACRO (DPGEN_FIFO, char *modelname, long flags, long N);
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).
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.
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
);