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io: Rework generic ODDR implementation

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
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Alex Forencich
2025-02-16 19:27:56 -08:00
parent d01a90298c
commit da7fe065cc
1 changed files with 5 additions and 15 deletions
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20
rtl/io/taxi_oddr.sv
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@@ -112,25 +112,15 @@ end else if (!SIM && VENDOR == "ALTERA") begin
end else begin
// generic/simulation implementation (no vendor primitives)
logic [WIDTH-1:0] d_reg_1 = '0;
logic [WIDTH-1:0] d_reg_2 = '0;
logic [WIDTH-1:0] q_reg = '0;
logic [WIDTH-1:0] d1_reg = '0;
logic [WIDTH-1:0] d2_reg = '0;
always_ff @(posedge clk) begin
d_reg_1 <= d1;
d_reg_2 <= d2;
d1_reg <= d1;
d2_reg <= d2;
end
always_ff @(posedge clk) begin
q_reg <= d1;
end
always_ff @(negedge clk) begin
q_reg <= d_reg_2;
end
assign q = q_reg;
assign q = clk ? d1_reg : d2_reg;
end