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Trying to fix audio issues

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Imants Pulkstenis
2020-01-21 21:26:29 +02:00
parent e8095a4e68
commit c9e3a92ccb
6 changed files with 52 additions and 34 deletions
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no_effect.v
+22 -13
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@@ -12,10 +12,11 @@ module no_effect #( parameter
);
//-------------Internal Constants---------------------------
localparam [3:0] IDLE = 'd0,
OUTPUT = 'd1;
localparam [1:0] IDLE = 'd0,
OUTPUT = 'd1,
CLEAR = 'd3;
reg [3:0] r_state=IDLE, r_next=IDLE;
reg [1:0] r_state=IDLE, r_next=IDLE;
reg signed [data_width-1: 0] r_data = 'b0;
reg r_read_enable = 0;
@@ -28,12 +29,7 @@ assign o_data = r_data;
//---------state register sequential always block-----------
always @(posedge clk ) begin
if (reset == 1) begin
// clear state
r_state <= IDLE;
r_next <= IDLE;
end
else begin
if (~reset) begin
r_state <= r_next;
end
end
@@ -41,7 +37,12 @@ end
//----next state & outputs, combinational always block------
always @(posedge clk ) begin
if (reset) begin
r_next <= IDLE;
r_read_enable <= 0; // redy to read data
r_data_valid <= 0;
end
else begin
case(r_state)
IDLE : begin
if (i_data_ready == 1) begin
@@ -58,9 +59,9 @@ always @(posedge clk ) begin
end
OUTPUT : begin
if (i_read_done == 1) begin
r_next <= IDLE;
r_next <= CLEAR;
r_data_valid <= 0;
r_read_enable <= 1;
r_read_enable <= 0;
end
else begin
r_next <= OUTPUT;
@@ -68,8 +69,16 @@ always @(posedge clk ) begin
r_read_enable <= 0; // read disable
end
end
default: r_next <= IDLE; // on error
CLEAR : begin
r_next <= IDLE;
r_data_valid <= 0;
r_read_enable <= 1;
end
default: begin
r_next <= IDLE; // on error
end
endcase
end
end