DPGEN_SFFT(3)

💖 DPGEN_SFFT 💖

okay bestie, welcome to the Alliance - genlib User's Manual page for DPGEN_SFFT(3), a.k.a. the Static Flip-Flop with Scan-Path Macro-Generator. she's a whole icon and she's about to make your netlist pop off. ✨

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🌸 NAME 🌸

DPGEN_SFFT — Static Flip-Flop with Scan-Path Macro-Generator

no cap, that's literally her whole job description.

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🎀 SYNOPSIS 🎀

#include  <genlib.h>

void GENLIB_MACRO (DPGEN_SFFT, char *modelname, long flags, long N);

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✨ DESCRIPTION ✨

So basically: this generates a static flip-flop with a scan-path, N bits wide, and it's named whatever you pass in as modelname. 💅

And the way this flip-flop is built?? Both of its latches are each made of two inverters looped together. that's the whole structure. two inverters holding hands. iconic behaviour honestly. 🫶

How it works, bestie:

• scan — when you set it to '1' it enables the scan-path mode. and listen, heads up: in scan-path mode the wen signal is not effective. like, she's not listening to wen rn. 🚫
• scin — the input of the scan-path. this terminal is different from i0[0], so don't go thinking they're the same thing.
  • and the scout? that's q[N-1]. in the example below that works out to q[31]. 👑
• wen — when you set it to '1' it enables the writing of the flip-flop.

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🔥 TERMINAL NAMES 🔥

1. scan : scan-path mode (input, 1 bit).
2. scin : scan path in (input, 1 bit).
3. wen : write enable (input, 1 bit).
4. ck : clock signal (input, 1 bit).
5. i0 : data input (N bits).
6. q : output (N bits).
7. vdd : power.
8. vss : ground.

eight terminals, all accounted for, no crumbs left behind. 🍓

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🌈 EXAMPLE 🌈

this is the vibe, copy it exactly bestie:

GENLIB_MACRO(DPGEN_SFFT, "model_sfft_32"
                       , F_BEHAV|F_PLACE
                       , 32
                       );

GENLIB_LOINS( "model_sfft_32"
            , "instance1_sfft_32"
            , "scan"
            , "scin"
            , "wen"
            , "ck"
            , "i0[31:0]"
            ,  "q[31:0]"  /* a[31] is "scout". */
            , "vdd", "vss", NULL
            );

see how q[31:0] is doing the most? and that little comment is telling you a[31] is "scout". 👀 iykyk.

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🦋 SEE ALSO 🦋

• GENLIB_MACRO(3)
• genlib(1)

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and that's the whole page, periodt. 💜

this masterpiece came from ASIM/LIP6, dated 30 July 2004 — yes she's vintage, yes she still ate, and no we will not be discussing her age any further. mwah. 💅✨🎀