/********************************************** _ _ Cook Darwin __
_ descript: author : Cook.Darwin Version: VERA.0.0 creaded: 2018/1/18 madified: ***********************************************/ `timescale 1ns/1ps module fifo_ku_36kb_long #(
parameter DSIZE = 32, parameter DEPTH = 8000
)(
input wr_clk, input wr_rst, input rd_clk, input rd_rst, input [DSIZE-1:0] din , input wr_en , input rd_en , output [DSIZE-1:0] dout , output full , output empty
);
logic RST; logic en_rd_en; logic en_wr_en;
fifo_wr_rd_mark fifo_wr_rd_mark_inst( /* input */ .rd_clk (rd_clk ), /* input */ .wr_clk (wr_clk ), /* input */ .rd_rst (rd_rst ), /* input */ .wr_rst (wr_rst ), /* output logic */ .en_rd_en (en_rd_en ), /* output logic */ .en_wr_en (en_wr_en ), /* output logic */ .fifo_rst (RST ) );
// initial begin // assert(DSIZE>=19 && DSIZE <=36) // else begin // $error(“FIFO’DSIZE MUST >=19 && <=36”,DSIZE); // $stop; // end // end
localparam DIV = ((DSIZE>=37) && (DSIZE<=72)) ? 512 :
((DSIZE>=19) && (DSIZE<=36)) ? 1024 : ((DSIZE>=10) && (DSIZE<=18)) ? 2048 : ((DSIZE>=5 ) && (DSIZE<=9 )) ? 4096 : ((DSIZE>=1 ) && (DSIZE<=4 )) ? 8192 : 8192;
localparam KNUM = DEPTH/DIV;
///////////////////////////////////////////////////////////////// // DATA_WIDTH | FIFO_SIZE | FIFO Depth | RDCOUNT/WRCOUNT Width // // ===========|===========|============|=======================// // 37-72 | “36Kb” | 512 | 9-bit // // 19-36 | “36Kb” | 1024 | 10-bit // // 19-36 | “18Kb” | 512 | 9-bit // // 10-18 | “36Kb” | 2048 | 11-bit // // 10-18 | “18Kb” | 1024 | 10-bit // // 5-9 | “36Kb” | 4096 | 12-bit // // 5-9 | “18Kb” | 2048 | 11-bit // // 1-4 | “36Kb” | 8192 | 13-bit // // 1-4 | “18Kb” | 4096 | 12-bit // /////////////////////////////////////////////////////////////////
logic EMPTY,FULL;
// assign RST = wr_rst || rd_rst;
logic mfifo_dout [KNUM-1:0]; logic mfifo_din [KNUM-1:0]; logic mfifo_empty [KNUM-1:0]; logic mfifo_full [KNUM-1:0];
logic mfifo_rd_en [KNUM-1:0]; logic mfifo_wr_en [KNUM-1:0];
logic mfifo_rd_clk [KNUM-1:0]; logic mfifo_wr_clk [KNUM-1:0];
genvar KK; generate for(KK=0;KK<KNUM;KK++)begin
fifo_ku #(
.DSIZE (DSIZE )
)fifo_ku_inst( /* input */ .wr_clk (mfifo_wr_clk ), /* input */ .wr_rst (RST ), /* input */ .rd_clk (mfifo_rd_clk ), /* input */ .rd_rst (RST ), /* input [DSIZE-1:0] */ .din (mfifo_din ), /* input */ .wr_en (mfifo_wr_en && en_wr_en ), /* input */ .rd_en (mfifo_rd_en && en_rd_en ), /* output logic */ .dout (mfifo_dout [KK] ), /* output logic */ .full (mfifo_full [KK] ), /* output logic */ .empty (mfifo_empty ), /* output logic */ .rdcount (), /* output logic */ .wrcount () );
if(KK==0)begin
assign mfifo_wr_en[KK] = wr_en; assign mfifo_din[KK] = din; assign full = mfifo_full[KK];
end else begin
assign mfifo_wr_en[KK] = !mfifo_empty[KK-1]; assign mfifo_din[KK] = mfifo_dout[KK-1];
end
if(KK==KNUM-1)begin
assign dout = mfifo_dout[KK]; assign empty = mfifo_empty[KK]; assign mfifo_rd_en[KK] = rd_en; assign mfifo_rd_clk[KK] = rd_clk;
end else begin
assign mfifo_rd_en[KK] = !mfifo_full[KK+1]; assign mfifo_rd_clk[KK] = wr_clk;
end
assign mfifo_wr_clk = wr_clk;
end endgenerate
// End of FIFO_DUALCLOCK_MACRO_inst instantiation
endmodule