head 1.1; access; symbols; locks; strict; comment @# @; 1.1 date 2008.08.25.01.31.38; author sfielding; state Exp; branches; next ; commitid 226848b20b4c4567; desc @@ 1.1 log @spiMaster - First CVS check in @ text @////////////////////////////////////////////////////////////////////// //// //// //// sm_TxFifo.v //// //// //// //// This file is part of the spiMaster opencores effort. //// //// //// //// //// Module Description: //// //// parameterized TxFifo wrapper. Min depth = 2, Max depth = 65536 //// fifo write access via bus interface, fifo read access is direct //// //// //// //// To Do: //// //// //// //// //// Author(s): //// //// - Steve Fielding, sfielding@@base2designs.com //// //// //// ////////////////////////////////////////////////////////////////////// //// //// //// Copyright (C) 2008 Steve Fielding and OPENCORES.ORG //// //// //// //// This source file may be used and distributed without //// //// restriction provided that this copyright statement is not //// //// removed from the file and that any derivative work contains //// //// the original copyright notice and the associated disclaimer. //// //// //// //// This source file is free software; you can redistribute it //// //// and/or modify it under the terms of the GNU Lesser General //// //// Public License as published by the Free Software Foundation; //// //// either version 2.1 of the License, or (at your option) any //// //// later version. //// //// //// //// This source is distributed in the hope that it will be //// //// useful, but WITHOUT ANY WARRANTY; without even the implied //// //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //// //// PURPOSE. See the GNU Lesser General Public License for more //// //// details. //// //// //// //// You should have received a copy of the GNU Lesser General //// //// Public License along with this source; if not, download it //// //// from //// //// //// ////////////////////////////////////////////////////////////////////// // `include "timescale.v" module sm_TxFifo( busClk, spiSysClk, rstSyncToBusClk, rstSyncToSpiClk, fifoREn, fifoEmpty, busAddress, busWriteEn, busStrobe_i, busFifoSelect, busDataIn, busDataOut, fifoDataOut ); //FIFO_DEPTH = 2^ADDR_WIDTH parameter FIFO_DEPTH = 64; parameter ADDR_WIDTH = 6; input busClk; input spiSysClk; input rstSyncToBusClk; input rstSyncToSpiClk; input fifoREn; output fifoEmpty; input [2:0] busAddress; input busWriteEn; input busStrobe_i; input busFifoSelect; input [7:0] busDataIn; output [7:0] busDataOut; output [7:0] fifoDataOut; wire busClk; wire spiSysClk; wire rstSyncToBusClk; wire rstSyncToSpiClk; wire fifoREn; wire fifoEmpty; wire [2:0] busAddress; wire busWriteEn; wire busStrobe_i; wire busFifoSelect; wire [7:0] busDataIn; wire [7:0] busDataOut; wire [7:0] fifoDataOut; //internal wires and regs wire fifoWEn; wire forceEmptySyncToSpiClk; wire forceEmptySyncToBusClk; wire [15:0] numElementsInFifo; wire fifoFull; sm_fifoRTL #(8, FIFO_DEPTH, ADDR_WIDTH) u_sm_fifo( .wrClk(busClk), .rdClk(spiSysClk), .rstSyncToWrClk(rstSyncToBusClk), .rstSyncToRdClk(rstSyncToSpiClk), .dataIn(busDataIn), .dataOut(fifoDataOut), .fifoWEn(fifoWEn), .fifoREn(fifoREn), .fifoFull(fifoFull), .fifoEmpty(fifoEmpty), .forceEmptySyncToWrClk(forceEmptySyncToBusClk), .forceEmptySyncToRdClk(forceEmptySyncToSpiClk), .numElementsInFifo(numElementsInFifo) ); sm_TxfifoBI u_sm_TxfifoBI( .address(busAddress), .writeEn(busWriteEn), .strobe_i(busStrobe_i), .busClk(busClk), .spiSysClk(spiSysClk), .rstSyncToBusClk(rstSyncToBusClk), .fifoSelect(busFifoSelect), .busDataIn(busDataIn), .busDataOut(busDataOut), .fifoWEn(fifoWEn), .forceEmptySyncToBusClk(forceEmptySyncToBusClk), .forceEmptySyncToSpiClk(forceEmptySyncToSpiClk), .numElementsInFifo(numElementsInFifo) ); endmodule @