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ad_rst:- allow preset to be synchronized as reset

main
Rejeesh Kutty 2015-08-13 12:58:52 -04:00
parent 2bcac36e33
commit 5edf61c40a
1 changed files with 6 additions and 11 deletions
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17
library/common/ad_rst.v
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@ -34,8 +34,6 @@
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
`timescale 1ns/100ps
@ -55,19 +53,16 @@ module ad_rst (
// internal registers
reg rst_p = 'd0;
reg ad_rst_sync_m1 = 'd1;
reg ad_rst_sync = 'd1;
reg rst = 'd0;
// simple reset gen
always @(posedge clk or posedge preset) begin
if (preset == 1'b1) begin
rst_p <= 1'd1;
rst <= 1'd1;
end else begin
rst_p <= 1'b0;
rst <= rst_p;
end
always @(posedge clk) begin
ad_rst_sync_m1 <= preset;
ad_rst_sync <= ad_rst_sync_m1;
rst <= ad_rst_sync;
end
endmodule