Subversion Repositories aes_highthroughput_lowarea

//////////////////////////////////////////////////////////////////////

////                                                              ////

////  Ram module                                                  ////

////                                                              ////

////  Description:                                                ////

////  this is 16x64, we can use a 16x128 to replace two of this   ////

////    module, also, can use specific foundry libs instead       ////

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////  To Do:                                                      ////

////   - done                                                     ////

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////  Author(s):                                                  ////

////      - Luo Dongjun,   dongjun_luo@hotmail.com                ////

////                                                              ////

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module ram_16x64 (clk,wr,wr_addr,wr_data,rd,rd_addr,rd_data);

input clk,wr,rd;

input [3:0] wr_addr,rd_addr;

input [63:0] wr_data;

output [63:0] rd_data;

reg [63:0] mem[15:0];

wire [63:0] rd_data;

// behavioral code for 16x64 mem

always @ (posedge clk)

begin

   if (wr)

      mem[wr_addr] <= wr_data;

end

reg [3:0] srd_addr;

always @ (posedge clk)

begin

        if (rd)

                srd_addr <= rd_addr;

end

assign rd_data = mem[srd_addr];

endmodule