Vinayaka's Notes:
Parameter type will support custom data type like struct.
module axi_pipe #(
//parameter type DT = logic
parameter int unsigned DT = 32
)
(
output logic [DT-1:0] data_o,
output logic data_o_val,
input logic data_o_rdy,
input logic [DT-1:0] data_i,
input logic data_i_val,
output logic data_i_rdy,
input logic clk,
input logic rstn
);
// Data register on incoming val-rdy
always_ff @(posedge clk, negedge rstn) begin
if (!rstn)
data_o <= '0;
else if (data_i_val && data_i_rdy)
data_o <= data_i;
end
// Generate output valid
always_ff @(posedge clk, negedge rstn) begin
if (!rstn)
data_o_val <= '0;
else if (data_i_val && data_i_rdy)
data_o_val <= '1;
else if (data_o_rdy)
data_o_val <= '0;
end
// Generate ready for incoming data
assign data_i_rdy = ~(data_o_val && ~data_o_rdy);
endmodule