| Line 6... |
Line 6... |
//// http://www.opencores.org/projects/ethmac/ ////
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//// http://www.opencores.org/projects/ethmac/ ////
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//// ////
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//// ////
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//// Author(s): ////
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//// Author(s): ////
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//// - Igor Mohor (igorM@opencores.org) ////
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//// - Igor Mohor (igorM@opencores.org) ////
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//// ////
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//// ////
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//// All additional information is avaliable in the Readme.txt ////
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//// All additional information is available in the Readme.txt ////
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//// file. ////
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//// file. ////
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//// ////
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//// ////
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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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//// ////
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//// ////
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//// Copyright (C) 2001 Authors ////
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//// Copyright (C) 2001, 2002 Authors ////
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//// ////
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//// ////
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//// This source file may be used and distributed without ////
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//// This source file may be used and distributed without ////
|
//// restriction provided that this copyright statement is not ////
|
//// restriction provided that this copyright statement is not ////
|
//// removed from the file and that any derivative work contains ////
|
//// removed from the file and that any derivative work contains ////
|
//// the original copyright notice and the associated disclaimer. ////
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//// the original copyright notice and the associated disclaimer. ////
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| Line 39... |
Line 39... |
//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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//
|
//
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// CVS Revision History
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// CVS Revision History
|
//
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//
|
// $Log: not supported by cvs2svn $
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// $Log: not supported by cvs2svn $
|
|
// Revision 1.11 2002/09/04 18:38:03 mohor
|
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// CarrierSenseLost status is not set when working in loopback mode.
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//
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// Revision 1.10 2002/07/25 18:17:46 mohor
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// Revision 1.10 2002/07/25 18:17:46 mohor
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// InvalidSymbol generation changed.
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// InvalidSymbol generation changed.
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//
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//
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// Revision 1.9 2002/04/22 13:51:44 mohor
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// Revision 1.9 2002/04/22 13:51:44 mohor
|
// Short frame and ReceivedLengthOK were not detected correctly.
|
// Short frame and ReceivedLengthOK were not detected correctly.
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| Line 97... |
Line 100... |
RxByteCnt, RxByteCntEq0, RxByteCntGreat2, RxByteCntMaxFrame, ReceivedPauseFrm,
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RxByteCnt, RxByteCntEq0, RxByteCntGreat2, RxByteCntMaxFrame, ReceivedPauseFrm,
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InvalidSymbol, MRxD, LatchedCrcError, Collision, CollValid, RxLateCollision,
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InvalidSymbol, MRxD, LatchedCrcError, Collision, CollValid, RxLateCollision,
|
r_RecSmall, r_MinFL, r_MaxFL, ShortFrame, DribbleNibble, ReceivedPacketTooBig, r_HugEn,
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r_RecSmall, r_MinFL, r_MaxFL, ShortFrame, DribbleNibble, ReceivedPacketTooBig, r_HugEn,
|
LoadRxStatus, StartTxDone, StartTxAbort, RetryCnt, RetryCntLatched, MTxClk, MaxCollisionOccured,
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LoadRxStatus, StartTxDone, StartTxAbort, RetryCnt, RetryCntLatched, MTxClk, MaxCollisionOccured,
|
RetryLimit, LateCollision, LateCollLatched, StartDefer, DeferLatched, TxStartFrm,
|
RetryLimit, LateCollision, LateCollLatched, StartDefer, DeferLatched, TxStartFrm,
|
StatePreamble, StateData, CarrierSense, CarrierSenseLost, TxUsedData, LatchedMRxErr, Loopback
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StatePreamble, StateData, CarrierSense, CarrierSenseLost, TxUsedData, LatchedMRxErr, Loopback,
|
|
r_FullD
|
);
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);
|
|
|
|
|
|
|
parameter Tp = 1;
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parameter Tp = 1;
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| Line 141... |
Line 145... |
input StatePreamble;
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input StatePreamble;
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input [1:0] StateData;
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input [1:0] StateData;
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input CarrierSense;
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input CarrierSense;
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input TxUsedData;
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input TxUsedData;
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input Loopback;
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input Loopback;
|
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input r_FullD;
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|
|
|
|
output ReceivedLengthOK;
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output ReceivedLengthOK;
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output ReceiveEnd;
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output ReceiveEnd;
|
output ReceivedPacketGood;
|
output ReceivedPacketGood;
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| Line 388... |
Line 393... |
always @ (posedge MTxClk or posedge Reset)
|
always @ (posedge MTxClk or posedge Reset)
|
begin
|
begin
|
if(Reset)
|
if(Reset)
|
CarrierSenseLost <=#Tp 1'b0;
|
CarrierSenseLost <=#Tp 1'b0;
|
else
|
else
|
if((StatePreamble | (|StateData)) & ~CarrierSense & ~Loopback & ~Collision)
|
if((StatePreamble | (|StateData)) & ~CarrierSense & ~Loopback & ~Collision & ~r_FullD)
|
CarrierSenseLost <=#Tp 1'b1;
|
CarrierSenseLost <=#Tp 1'b1;
|
else
|
else
|
if(TxStartFrm)
|
if(TxStartFrm)
|
CarrierSenseLost <=#Tp 1'b0;
|
CarrierSenseLost <=#Tp 1'b0;
|
end
|
end
|
