diff options
Diffstat (limited to 'usrp2/fpga/eth/rtl/verilog/miim/eth_shiftreg.v')
| -rw-r--r-- | usrp2/fpga/eth/rtl/verilog/miim/eth_shiftreg.v | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/usrp2/fpga/eth/rtl/verilog/miim/eth_shiftreg.v b/usrp2/fpga/eth/rtl/verilog/miim/eth_shiftreg.v deleted file mode 100644 index 0b97bb7bc..000000000 --- a/usrp2/fpga/eth/rtl/verilog/miim/eth_shiftreg.v +++ /dev/null @@ -1,159 +0,0 @@ -//////////////////////////////////////////////////////////////////////
-//// ////
-//// eth_shiftreg.v ////
-//// ////
-//// This file is part of the Ethernet IP core project ////
-//// http://www.opencores.org/projects/ethmac/ ////
-//// ////
-//// Author(s): ////
-//// - Igor Mohor (igorM@opencores.org) ////
-//// ////
-//// All additional information is avaliable in the Readme.txt ////
-//// file. ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2001 Authors ////
-//// ////
-//// 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 ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//
-// CVS Revision History
-//
-// $Log: eth_shiftreg.v,v $
-// Revision 1.2 2005/12/13 12:54:49 maverickist
-// first simulation passed
-//
-// Revision 1.1.1.1 2005/12/13 01:51:45 Administrator
-// no message
-//
-// Revision 1.2 2005/04/27 15:58:47 Administrator
-// no message
-//
-// Revision 1.1.1.1 2004/12/15 06:38:54 Administrator
-// no message
-//
-// Revision 1.5 2002/08/14 18:16:59 mohor
-// LinkFail signal was not latching appropriate bit.
-//
-// Revision 1.4 2002/03/02 21:06:01 mohor
-// LinkFail signal was not latching appropriate bit.
-//
-// Revision 1.3 2002/01/23 10:28:16 mohor
-// Link in the header changed.
-//
-// Revision 1.2 2001/10/19 08:43:51 mohor
-// eth_timescale.v changed to timescale.v This is done because of the
-// simulation of the few cores in a one joined project.
-//
-// Revision 1.1 2001/08/06 14:44:29 mohor
-// A define FPGA added to select between Artisan RAM (for ASIC) and Block Ram (For Virtex).
-// Include files fixed to contain no path.
-// File names and module names changed ta have a eth_ prologue in the name.
-// File eth_timescale.v is used to define timescale
-// All pin names on the top module are changed to contain _I, _O or _OE at the end.
-// Bidirectional signal MDIO is changed to three signals (Mdc_O, Mdi_I, Mdo_O
-// and Mdo_OE. The bidirectional signal must be created on the top level. This
-// is done due to the ASIC tools.
-//
-// Revision 1.1 2001/07/30 21:23:42 mohor
-// Directory structure changed. Files checked and joind together.
-//
-// Revision 1.3 2001/06/01 22:28:56 mohor
-// This files (MIIM) are fully working. They were thoroughly tested. The testbench is not updated.
-//
-//
-
-module eth_shiftreg(Clk, Reset, MdcEn_n, Mdi, Fiad, Rgad, CtrlData, WriteOp, ByteSelect,
- LatchByte, ShiftedBit, Prsd, LinkFail);
-
-
-input Clk; // Input clock (Host clock)
-input Reset; // Reset signal
-input MdcEn_n; // Enable signal is asserted for one Clk period before Mdc falls.
-input Mdi; // MII input data
-input [4:0] Fiad; // PHY address
-input [4:0] Rgad; // Register address (within the selected PHY)
-input [15:0]CtrlData; // Control data (data to be written to the PHY)
-input WriteOp; // The current operation is a PHY register write operation
-input [3:0] ByteSelect; // Byte select
-input [1:0] LatchByte; // Byte select for latching (read operation)
-
-output ShiftedBit; // Bit shifted out of the shift register
-output[15:0]Prsd; // Read Status Data (data read from the PHY)
-output LinkFail; // Link Integrity Signal
-
-reg [7:0] ShiftReg; // Shift register for shifting the data in and out
-reg [15:0]Prsd;
-reg LinkFail;
-
-
-
-
-// ShiftReg[7:0] :: Shift Register Data
-always @ (posedge Clk or posedge Reset)
-begin
- if(Reset)
- begin
- ShiftReg[7:0] <= 8'h0;
- Prsd[15:0] <= 16'h0;
- LinkFail <= 1'b0;
- end
- else
- begin
- if(MdcEn_n)
- begin
- if(|ByteSelect)
- begin
- case (ByteSelect[3:0])
- 4'h1 : ShiftReg[7:0] <= {2'b01, ~WriteOp, WriteOp, Fiad[4:1]};
- 4'h2 : ShiftReg[7:0] <= {Fiad[0], Rgad[4:0], 2'b10};
- 4'h4 : ShiftReg[7:0] <= CtrlData[15:8];
- 4'h8 : ShiftReg[7:0] <= CtrlData[7:0];
- default : ShiftReg[7:0] <= 8'h0;
- endcase
- end
- else
- begin
- ShiftReg[7:0] <= {ShiftReg[6:0], Mdi};
- if(LatchByte[0])
- begin
- Prsd[7:0] <= {ShiftReg[6:0], Mdi};
- if(Rgad == 5'h01)
- LinkFail <= ~ShiftReg[1]; // this is bit [2], because it is not shifted yet
- end
- else
- begin
- if(LatchByte[1])
- Prsd[15:8] <= {ShiftReg[6:0], Mdi};
- end
- end
- end
- end
-end
-
-
-assign ShiftedBit = ShiftReg[7];
-
-
-endmodule
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