la_spregfile.v

/*****************************************************************************
 * Function: Single Port Register File
 * Copyright: Lambda Project Authors. All rights Reserved.
 * License:  MIT (see LICENSE file in Lambda repository)
 *
 * Docs:
 *
 * This is a wrapper for selecting from a set of hardened register file macros.
 *
 * A synthesizable reference model is used when the TYPE is DEFAULT. The
 * synthesizable model does not implement the cfg and test interface and should
 * only be used for basic testing and for synthesizing for FPGA devices.
 * Advanced ASIC development should rely on complete functional models
 * supplied on a per macro basis.
 *
 * Technologoy specific implementations of "la_spregfile" would generally
 * include one ore more hardcoded instantiations of RF modules with a generate
 * statement relying on the "TYPE" to select between the list of modules
 * at build time.
 *
 ****************************************************************************/

module la_spregfile #(
    parameter DW    = 32,         // Memory width
    parameter AW    = 10,         // Address width (derived)
    parameter TYPE  = "DEFAULT",  // Pass through variable for hard macro
    parameter CTRLW = 128,        // Width of asic ctrl interface
    parameter TESTW = 128         // Width of asic test interface
) (  // Memory interface
    input              clk,    // write clock
    input              ce,     // chip enable
    input              we,     // write enable
    input  [   DW-1:0] wmask,  //per bit write mask
    input  [   AW-1:0] addr,   //write address
    input  [   DW-1:0] din,    //write data
    output [   DW-1:0] dout,   //read output data
    // Power signals
    input              vss,    // ground signal
    input              vdd,    // memory core array power
    input              vddio,  // periphery/io power
    // Generic interfaces
    input  [CTRLW-1:0] ctrl,   // pass through ASIC control interface
    input  [TESTW-1:0] test    // pass through ASIC test interface
);

    la_spram #(
        .DW(DW),
        .AW(AW),
        .TYPE(TYPE),
        .CTRLW(CTRLW),
        .TESTW(TESTW)
    ) memory (
        .clk(clk),
        .ce(ce),
        .we(we),
        .wmask(wmask),
        .addr(addr),
        .din(din),
        .dout(dout),
        .vss(vss),
        .vdd(vdd),
        .vddio(vddio),
        .ctrl(ctrl),
        .test(test)
    );

endmodule