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authorJohnathan Corgan <jcorgan@corganenterprises.com>2009-10-01 11:00:25 -0700
committerJohnathan Corgan <jcorgan@corganenterprises.com>2009-10-01 11:07:59 -0700
commit1ff74777e47f3a2edefc5154484f2bdcb86c1a13 (patch)
tree04f94ef4f7f06a210f7532592829332c7f2621f0 /opencores/sd_interface/RTL/readWriteSPIWireData.v
parent7b8f65256b5ea300187ebb6a359df2fa707a295d (diff)
parent42fc55415af499980901c7787f44c7e74b4a9ce1 (diff)
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Merge branch 'new_eth' of http://gnuradio.org/git/matt into master
* 'new_eth' of http://gnuradio.org/git/matt: (42 commits) Fix warnings, mostly from implicitly defined wires or unspecified widths fullchip sim now compiles again, after moving eth and models over to new simple_gemac remove unused opencores remove debugging code no idea where this came from, it shouldn't be here Copied wb_1master back from quad radio Remove old mac. Good riddance. remove unused port More xilinx fifos, more clean up of our fifos might as well use a cascade fifo to help timing and give a little more capacity fix a typo which caused tx glitches Untested fixes for getting serdes onto the new fifo system. Compiles, at least Implement Eth flow control using pause frames parameterized fifo sizes, some reformatting remove unused old style fifo allow control of whether or not to honor flow control, adds some debug lines debug the rx side no longer used, replaced by newfifo version remove special last_line adjustment from ethernet port Firmware now inserts mac source address value in each frame. ...
Diffstat (limited to 'opencores/sd_interface/RTL/readWriteSPIWireData.v')
-rw-r--r--opencores/sd_interface/RTL/readWriteSPIWireData.v229
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diff --git a/opencores/sd_interface/RTL/readWriteSPIWireData.v b/opencores/sd_interface/RTL/readWriteSPIWireData.v
deleted file mode 100644
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--- a/opencores/sd_interface/RTL/readWriteSPIWireData.v
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-
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// readWriteSPIWireData.v ////
-//// ////
-//// This file is part of the spiMaster opencores effort.
-//// <http://www.opencores.org/cores//> ////
-//// ////
-//// Module Description: ////
-//// parameterized dual clock domain fifo.
-//// fifo depth is restricted to 2^ADDR_WIDTH
-//// No protection against over runs and under runs.
-////
-//// ////
-//// To Do: ////
-////
-//// ////
-//// Author(s): ////
-//// - Steve Fielding, sfielding@base2designs.com ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2004 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 <http://www.opencores.org/lgpl.shtml> ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//
-`include "timescale.v"
-`include "spiMaster_defines.v"
-
-module readWriteSPIWireData (clk, clkDelay, rst, rxDataOut, rxDataRdySet, spiClkOut, spiDataIn, spiDataOut, txDataEmpty, txDataFull, txDataFullClr, txDataIn);
-input clk;
-input [7:0]clkDelay;
-input rst;
-input spiDataIn;
-input txDataFull;
-input [7:0]txDataIn;
-output [7:0]rxDataOut;
-output rxDataRdySet;
-output spiClkOut;
-output spiDataOut;
-output txDataEmpty;
-output txDataFullClr;
-
-wire clk;
-wire [7:0]clkDelay;
-wire rst;
-reg [7:0]rxDataOut, next_rxDataOut;
-reg rxDataRdySet, next_rxDataRdySet;
-reg spiClkOut, next_spiClkOut;
-wire spiDataIn;
-reg spiDataOut, next_spiDataOut;
-reg txDataEmpty, next_txDataEmpty;
-wire txDataFull;
-reg txDataFullClr, next_txDataFullClr;
-wire [7:0]txDataIn;
-
-// diagram signals declarations
-reg [3:0]bitCnt, next_bitCnt;
-reg [7:0]clkDelayCnt, next_clkDelayCnt;
-reg [7:0]rxDataShiftReg, next_rxDataShiftReg;
-reg [7:0]txDataShiftReg, next_txDataShiftReg;
-
-// BINARY ENCODED state machine: rwSPISt
-// State codes definitions:
-`define WT_TX_DATA 2'b00
-`define CLK_HI 2'b01
-`define CLK_LO 2'b10
-`define ST_RW_WIRE 2'b11
-
-reg [1:0]CurrState_rwSPISt, NextState_rwSPISt;
-
-// Diagram actions (continuous assignments allowed only: assign ...)
-// diagram ACTION
-
-
-// Machine: rwSPISt
-
-// NextState logic (combinatorial)
-always @ (txDataFull or txDataIn or clkDelayCnt or clkDelay or txDataShiftReg or bitCnt or rxDataShiftReg or spiDataIn or rxDataRdySet or txDataEmpty or txDataFullClr or spiClkOut or spiDataOut or rxDataOut or CurrState_rwSPISt)
-begin
- NextState_rwSPISt <= CurrState_rwSPISt;
- // Set default values for outputs and signals
- next_rxDataRdySet <= rxDataRdySet;
- next_txDataEmpty <= txDataEmpty;
- next_txDataShiftReg <= txDataShiftReg;
- next_rxDataShiftReg <= rxDataShiftReg;
- next_bitCnt <= bitCnt;
- next_clkDelayCnt <= clkDelayCnt;
- next_txDataFullClr <= txDataFullClr;
- next_spiClkOut <= spiClkOut;
- next_spiDataOut <= spiDataOut;
- next_rxDataOut <= rxDataOut;
- case (CurrState_rwSPISt) // synopsys parallel_case full_case
- `WT_TX_DATA:
- begin
- next_rxDataRdySet <= 1'b0;
- next_txDataEmpty <= 1'b1;
- if (txDataFull == 1'b1)
- begin
- NextState_rwSPISt <= `CLK_HI;
- next_txDataShiftReg <= txDataIn;
- next_rxDataShiftReg <= 8'h00;
- next_bitCnt <= 4'h0;
- next_clkDelayCnt <= 8'h00;
- next_txDataFullClr <= 1'b1;
- next_txDataEmpty <= 1'b0;
- end
- end
- `CLK_HI:
- begin
- next_clkDelayCnt <= clkDelayCnt + 1'b1;
- next_txDataFullClr <= 1'b0;
- next_rxDataRdySet <= 1'b0;
- if (clkDelayCnt == clkDelay)
- begin
- NextState_rwSPISt <= `CLK_LO;
- next_spiClkOut <= 1'b0;
- next_spiDataOut <= txDataShiftReg[7];
- next_txDataShiftReg <= {txDataShiftReg[6:0], 1'b0};
- next_clkDelayCnt <= 8'h00;
- end
- end
- `CLK_LO:
- begin
- next_clkDelayCnt <= clkDelayCnt + 1'b1;
- if ((bitCnt == 4'h8) && (txDataFull == 1'b1))
- begin
- NextState_rwSPISt <= `CLK_HI;
- next_rxDataRdySet <= 1'b1;
- next_rxDataOut <= rxDataShiftReg;
- next_txDataShiftReg <= txDataIn;
- next_bitCnt <= 3'b000;
- next_clkDelayCnt <= 8'h00;
- next_txDataFullClr <= 1'b1;
- end
- else if (bitCnt == 4'h8)
- begin
- NextState_rwSPISt <= `WT_TX_DATA;
- next_rxDataRdySet <= 1'b1;
- next_rxDataOut <= rxDataShiftReg;
- end
- else if (clkDelayCnt == clkDelay)
- begin
- NextState_rwSPISt <= `CLK_HI;
- next_spiClkOut <= 1'b1;
- next_bitCnt <= bitCnt + 1'b1;
- next_clkDelayCnt <= 8'h00;
- next_rxDataShiftReg <= {rxDataShiftReg[6:0], spiDataIn};
- end
- end
- `ST_RW_WIRE:
- begin
- next_bitCnt <= 4'h0;
- next_clkDelayCnt <= 8'h00;
- next_txDataFullClr <= 1'b0;
- next_rxDataRdySet <= 1'b0;
- next_txDataShiftReg <= 8'h00;
- next_rxDataShiftReg <= 8'h00;
- next_rxDataOut <= 8'h00;
- next_spiDataOut <= 1'b0;
- next_spiClkOut <= 1'b0;
- next_txDataEmpty <= 1'b0;
- NextState_rwSPISt <= `WT_TX_DATA;
- end
- endcase
-end
-
-// Current State Logic (sequential)
-always @ (posedge clk)
-begin
- if (rst == 1'b1)
- CurrState_rwSPISt <= `ST_RW_WIRE;
- else
- CurrState_rwSPISt <= NextState_rwSPISt;
-end
-
-// Registered outputs logic
-always @ (posedge clk)
-begin
- if (rst == 1'b1)
- begin
- rxDataRdySet <= 1'b0;
- txDataEmpty <= 1'b0;
- txDataFullClr <= 1'b0;
- spiClkOut <= 1'b0;
- spiDataOut <= 1'b0;
- rxDataOut <= 8'h00;
- txDataShiftReg <= 8'h00;
- rxDataShiftReg <= 8'h00;
- bitCnt <= 4'h0;
- clkDelayCnt <= 8'h00;
- end
- else
- begin
- rxDataRdySet <= next_rxDataRdySet;
- txDataEmpty <= next_txDataEmpty;
- txDataFullClr <= next_txDataFullClr;
- spiClkOut <= next_spiClkOut;
- spiDataOut <= next_spiDataOut;
- rxDataOut <= next_rxDataOut;
- txDataShiftReg <= next_txDataShiftReg;
- rxDataShiftReg <= next_rxDataShiftReg;
- bitCnt <= next_bitCnt;
- clkDelayCnt <= next_clkDelayCnt;
- end
-end
-
-endmodule \ No newline at end of file