mirror of https://github.com/YosysHQ/yosys.git
80 lines
1.3 KiB
Plaintext
80 lines
1.3 KiB
Plaintext
library(test) {
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/* D-type flip-flop with asynchronous reset and preset */
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cell (dffn) {
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area : 6;
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ff("IQ", "IQN") {
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next_state : "D";
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clocked_on : "!CLK";
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}
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pin(D) {
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direction : input;
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}
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pin(CLK) {
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direction : input;
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}
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pin(Q) {
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direction: output;
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function : "IQ";
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}
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pin(QN) {
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direction: output;
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function : "IQN";
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}
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}
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cell (dffsr) {
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area : 6;
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ff("IQ", "IQN") {
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next_state : "D";
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clocked_on : "CLK";
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clear : "CLEAR";
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preset : "PRESET";
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clear_preset_var1 : L;
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clear_preset_var2 : L;
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}
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pin(D) {
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direction : input;
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}
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pin(CLK) {
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direction : input;
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}
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pin(CLEAR) {
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direction : input;
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}
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pin(PRESET) {
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direction : input;
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}
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pin(Q) {
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direction: output;
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function : "IQ";
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}
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pin(QN) {
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direction: output;
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function : "IQN";
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}
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}
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cell (dffe) {
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area : 6;
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ff("IQ", "IQN") {
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next_state : "(D&EN) | (IQ&!EN)";
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clocked_on : "!CLK";
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}
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pin(D) {
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direction : input;
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}
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pin(EN) {
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direction : input;
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}
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pin(CLK) {
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direction : input;
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}
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pin(Q) {
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direction: output;
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function : "IQ";
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}
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pin(QN) {
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direction: output;
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function : "IQN";
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}
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}
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}
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