xinb
/
ic_com
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge dev to main. #1

Merged
xinb merged 5 commits from dev into main 2025-08-03 18:39:22 +00:00
Conversation 0 Commits 5 Files Changed 10 +30 -9
2 changed files with 30 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files
Showing only changes of commit f348990a79 - Show all commits

19
lib/fifo/sync/fifo_sync.sv
View File

@ -14,7 +14,8 @@ module fifo_sync #(
output wire [DATA_WIDTH-1:0] dout,
output wire empty,
output wire full,
output wire [$clog2(DEPTH):0] data_count
output wire [$clog2(DEPTH):0] fill_level,
output reg err
);
localparam ADDR_WIDTH = $clog2(DEPTH);
@ -37,15 +38,23 @@ module fifo_sync #(
always @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
rd_ptr <= 0;
end else if (rd_en && !empty) begin
rd_ptr <= rd_ptr + 1'b1;
err <= 1'b0;
end else begin
if (rd_en && empty) begin
err <= 1'b1;
end else begin
err <= 1'b0;
end
if (rd_en && !empty) begin
rd_ptr <= rd_ptr + 1'b1;
end
end
end
// 数据计数
assign data_count = wr_ptr - rd_ptr;
assign fill_level = wr_ptr - rd_ptr;
assign empty = (wr_ptr == rd_ptr);
assign full = (data_count == DEPTH);
assign full = (fill_level == DEPTH);
generate
if (USE_RAM) begin : USE_RAM_BLOCK

20
tb/fifo/sync/fifo_sync_tb.sv
View File

@ -15,7 +15,8 @@ module fifo_sync_tb;
wire [DATA_WIDTH-1:0] dout;
wire empty;
wire full;
wire [$clog2(DEPTH):0] data_count;
wire [$clog2(DEPTH):0] fill_level;
wire err;
// 实例化DUT
fifo_sync #(
@ -32,7 +33,8 @@ module fifo_sync_tb;
.dout(dout),
.empty(empty),
.full(full),
.data_count(data_count)
.fill_level(fill_level),
.err(err)
);
// 时钟生成
@ -81,6 +83,14 @@ module fifo_sync_tb;
if (!empty) $display("[TB][ERROR] FIFO未空!");
else $display("[TB][INFO] FIFO已空!");
// 尝试在empty时读，触发err
@(negedge clk);
rd_en = 1;
@(negedge clk);
rd_en = 0;
if (err) $display("[TB][INFO] 读空FIFO触发err信号");
else $display("[TB][ERROR] 读空FIFO未触发err!");
// 交错写读
for (int i = 0; i < 8; i++) begin
@(negedge clk);
@ -100,9 +110,11 @@ module fifo_sync_tb;
// 监控输出
always @(posedge clk) begin
if (wr_en && !full)
$display("[TB][WRITE] @%0t: din=%0d, wr_ptr=%0d", $time, din, dut.wr_ptr);
$display("[TB][WRITE] @%0t: din=%0d, wr_ptr=%0d, fill_level=%0d", $time, din, dut.wr_ptr, fill_level);
if (rd_en && !empty)
$display("[TB][READ ] @%0t: dout=%0d, rd_ptr=%0d", $time, dout, dut.rd_ptr);
$display("[TB][READ ] @%0t: dout=%0d, rd_ptr=%0d, fill_level=%0d", $time, dout, dut.rd_ptr, fill_level);
if (err)
$display("[TB][ERR ] @%0t: 读空FIFO!", $time);
end
endmodule