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[/] [usbhostslave/] [trunk/] [RTL/] [hostController/] [sendpacket.v] - Blame information for rev 9

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//////////////////////////////////////////////////////////////////////
////                                                              ////
//// sendPacket
////                                                              ////
//// This file is part of the usbhostslave opencores effort.
//// http://www.opencores.org/cores/usbhostslave/                 ////
////                                                              ////
//// Module Description:                                          ////
//// 
////                                                              ////
//// 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                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
//
`timescale 1ns / 1ps
`include "usbSerialInterfaceEngine_h.v"
`include "usbConstants_h.v"
 
 
 
module sendPacket (clk, fifoData, fifoEmpty, fifoReadEn, frameNum, HCTxPortCntl, HCTxPortData, HCTxPortGnt, HCTxPortRdy, HCTxPortReq, HCTxPortWEn, PID, rst, sendPacketRdy, sendPacketWEn, TxAddr, TxEndP);
input   clk;
input   [7:0]fifoData;
input   fifoEmpty;
input   HCTxPortGnt;
input   HCTxPortRdy;
input   [3:0]PID;
input   rst;
input   sendPacketWEn;
input   [6:0]TxAddr;
input   [3:0]TxEndP;
output  fifoReadEn;
output  [10:0]frameNum;
output  [7:0]HCTxPortCntl;
output  [7:0]HCTxPortData;
output  HCTxPortReq;
output  HCTxPortWEn;
output  sendPacketRdy;
 
wire    clk;
wire    [7:0]fifoData;
wire    fifoEmpty;
reg     fifoReadEn, next_fifoReadEn;
reg     [10:0]frameNum, next_frameNum;
reg     [7:0]HCTxPortCntl, next_HCTxPortCntl;
reg     [7:0]HCTxPortData, next_HCTxPortData;
wire    HCTxPortGnt;
wire    HCTxPortRdy;
reg     HCTxPortReq, next_HCTxPortReq;
reg     HCTxPortWEn, next_HCTxPortWEn;
wire    [3:0]PID;
wire    rst;
reg     sendPacketRdy, next_sendPacketRdy;
wire    sendPacketWEn;
wire    [6:0]TxAddr;
wire    [3:0]TxEndP;
 
// diagram signals declarations
reg  [7:0]PIDNotPID;
 
// BINARY ENCODED state machine: sndPkt
// State codes definitions:
`define START_SP 5'b00000
`define WAIT_ENABLE 5'b00001
`define SP_WAIT_GNT 5'b00010
`define SEND_PID_WAIT_RDY 5'b00011
`define SEND_PID_FIN 5'b00100
`define FIN_SP 5'b00101
`define OUT_IN_SETUP_WAIT_RDY1 5'b00110
`define OUT_IN_SETUP_WAIT_RDY2 5'b00111
`define OUT_IN_SETUP_FIN 5'b01000
`define SEND_SOF_FIN1 5'b01001
`define SEND_SOF_WAIT_RDY3 5'b01010
`define SEND_SOF_WAIT_RDY4 5'b01011
`define DATA0_DATA1_READ_FIFO 5'b01100
`define DATA0_DATA1_WAIT_READ_FIFO 5'b01101
`define DATA0_DATA1_FIFO_EMPTY 5'b01110
`define DATA0_DATA1_FIN 5'b01111
`define DATA0_DATA1_TERM_BYTE 5'b10000
`define OUT_IN_SETUP_CLR_WEN1 5'b10001
`define SEND_SOF_CLR_WEN1 5'b10010
`define DATA0_DATA1_CLR_WEN 5'b10011
`define DATA0_DATA1_CLR_REN 5'b10100
 
reg [4:0]CurrState_sndPkt, NextState_sndPkt;
 
// Diagram actions (continuous assignments allowed only: assign ...)
always @(PID)
begin
PIDNotPID <=  { (PID ^ 4'hf), PID };
end
 
 
// Machine: sndPkt
 
// NextState logic (combinatorial)
always @ (sendPacketWEn or HCTxPortGnt or HCTxPortRdy or PIDNotPID or PID or TxEndP or TxAddr or frameNum or fifoData or fifoEmpty or sendPacketRdy or fifoReadEn or HCTxPortData or HCTxPortCntl or HCTxPortWEn or HCTxPortReq or CurrState_sndPkt)
begin
  NextState_sndPkt <= CurrState_sndPkt;
  // Set default values for outputs and signals
  next_sendPacketRdy <= sendPacketRdy;
  next_fifoReadEn <= fifoReadEn;
  next_HCTxPortData <= HCTxPortData;
  next_HCTxPortCntl <= HCTxPortCntl;
  next_HCTxPortWEn <= HCTxPortWEn;
  next_HCTxPortReq <= HCTxPortReq;
  next_frameNum <= frameNum;
  case (CurrState_sndPkt)  // synopsys parallel_case full_case
    `START_SP:
    begin
      NextState_sndPkt <= `WAIT_ENABLE;
    end
    `WAIT_ENABLE:
    begin
      if (sendPacketWEn == 1'b1)
      begin
        NextState_sndPkt <= `SP_WAIT_GNT;
        next_sendPacketRdy <= 1'b0;
        next_HCTxPortReq <= 1'b1;
      end
    end
    `SP_WAIT_GNT:
    begin
      if (HCTxPortGnt == 1'b1)
      begin
        NextState_sndPkt <= `SEND_PID_WAIT_RDY;
      end
    end
    `FIN_SP:
    begin
      NextState_sndPkt <= `WAIT_ENABLE;
      next_sendPacketRdy <= 1'b1;
      next_HCTxPortReq <= 1'b0;
    end
    `SEND_PID_WAIT_RDY:
    begin
      if (HCTxPortRdy == 1'b1)
      begin
        NextState_sndPkt <= `SEND_PID_FIN;
        next_HCTxPortWEn <= 1'b1;
        next_HCTxPortData <= PIDNotPID;
        next_HCTxPortCntl <= `TX_PACKET_START;
      end
    end
    `SEND_PID_FIN:
    begin
      next_HCTxPortWEn <= 1'b0;
      if (PID == `DATA0 || PID == `DATA1)
      begin
        NextState_sndPkt <= `DATA0_DATA1_FIFO_EMPTY;
      end
      else if (PID == `SOF)
      begin
        NextState_sndPkt <= `SEND_SOF_WAIT_RDY3;
      end
      else if (PID == `OUT ||
        PID == `IN ||
        PID == `SETUP)
      begin
        NextState_sndPkt <= `OUT_IN_SETUP_WAIT_RDY1;
      end
      else
      begin
        NextState_sndPkt <= `FIN_SP;
      end
    end
    `OUT_IN_SETUP_WAIT_RDY1:
    begin
      if (HCTxPortRdy == 1'b1)
      begin
        NextState_sndPkt <= `OUT_IN_SETUP_CLR_WEN1;
        next_HCTxPortWEn <= 1'b1;
        next_HCTxPortData <= {TxEndP[0], TxAddr[6:0]};
        next_HCTxPortCntl <= `TX_PACKET_STREAM;
      end
    end
    `OUT_IN_SETUP_WAIT_RDY2:
    begin
      if (HCTxPortRdy == 1'b1)
      begin
        NextState_sndPkt <= `OUT_IN_SETUP_FIN;
        next_HCTxPortWEn <= 1'b1;
        next_HCTxPortData <= {5'b00000, TxEndP[3:1]};
        next_HCTxPortCntl <= `TX_PACKET_STREAM;
      end
    end
    `OUT_IN_SETUP_FIN:
    begin
      next_HCTxPortWEn <= 1'b0;
      NextState_sndPkt <= `FIN_SP;
    end
    `OUT_IN_SETUP_CLR_WEN1:
    begin
      next_HCTxPortWEn <= 1'b0;
      NextState_sndPkt <= `OUT_IN_SETUP_WAIT_RDY2;
    end
    `SEND_SOF_FIN1:
    begin
      next_HCTxPortWEn <= 1'b0;
      next_frameNum <= frameNum + 1'b1;
      NextState_sndPkt <= `FIN_SP;
    end
    `SEND_SOF_WAIT_RDY3:
    begin
      if (HCTxPortRdy == 1'b1)
      begin
        NextState_sndPkt <= `SEND_SOF_CLR_WEN1;
        next_HCTxPortWEn <= 1'b1;
        next_HCTxPortData <= frameNum[7:0];
        next_HCTxPortCntl <= `TX_PACKET_STREAM;
      end
    end
    `SEND_SOF_WAIT_RDY4:
    begin
      if (HCTxPortRdy == 1'b1)
      begin
        NextState_sndPkt <= `SEND_SOF_FIN1;
        next_HCTxPortWEn <= 1'b1;
        next_HCTxPortData <= {5'b00000, frameNum[10:8]};
        next_HCTxPortCntl <= `TX_PACKET_STREAM;
      end
    end
    `SEND_SOF_CLR_WEN1:
    begin
      next_HCTxPortWEn <= 1'b0;
      NextState_sndPkt <= `SEND_SOF_WAIT_RDY4;
    end
    `DATA0_DATA1_READ_FIFO:
    begin
      next_HCTxPortWEn <= 1'b1;
      next_HCTxPortData <= fifoData;
      next_HCTxPortCntl <= `TX_PACKET_STREAM;
      NextState_sndPkt <= `DATA0_DATA1_CLR_WEN;
    end
    `DATA0_DATA1_WAIT_READ_FIFO:
    begin
      if (HCTxPortRdy == 1'b1)
      begin
        NextState_sndPkt <= `DATA0_DATA1_CLR_REN;
        next_fifoReadEn <= 1'b1;
      end
    end
    `DATA0_DATA1_FIFO_EMPTY:
    begin
      if (fifoEmpty == 1'b0)
      begin
        NextState_sndPkt <= `DATA0_DATA1_WAIT_READ_FIFO;
      end
      else
      begin
        NextState_sndPkt <= `DATA0_DATA1_TERM_BYTE;
      end
    end
    `DATA0_DATA1_FIN:
    begin
      next_HCTxPortWEn <= 1'b0;
      NextState_sndPkt <= `FIN_SP;
    end
    `DATA0_DATA1_TERM_BYTE:
    begin
      if (HCTxPortRdy == 1'b1)
      begin
        NextState_sndPkt <= `DATA0_DATA1_FIN;
        //Last byte is not valid data,
        //but the 'TX_PACKET_STOP' flag is required
        //by the SIE state machine to detect end of data packet
        next_HCTxPortWEn <= 1'b1;
        next_HCTxPortData <= 8'h00;
        next_HCTxPortCntl <= `TX_PACKET_STOP;
      end
    end
    `DATA0_DATA1_CLR_WEN:
    begin
      next_HCTxPortWEn <= 1'b0;
      NextState_sndPkt <= `DATA0_DATA1_FIFO_EMPTY;
    end
    `DATA0_DATA1_CLR_REN:
    begin
      next_fifoReadEn <= 1'b0;
      NextState_sndPkt <= `DATA0_DATA1_READ_FIFO;
    end
  endcase
end
 
// Current State Logic (sequential)
always @ (posedge clk)
begin
  if (rst)
    CurrState_sndPkt <= `START_SP;
  else
    CurrState_sndPkt <= NextState_sndPkt;
end
 
// Registered outputs logic
always @ (posedge clk)
begin
  if (rst)
  begin
    sendPacketRdy <= 1'b1;
    fifoReadEn <= 1'b0;
    HCTxPortData <= 8'h00;
    HCTxPortCntl <= 8'h00;
    HCTxPortWEn <= 1'b0;
    HCTxPortReq <= 1'b0;
    frameNum <= 11'h000;
  end
  else
  begin
    sendPacketRdy <= next_sendPacketRdy;
    fifoReadEn <= next_fifoReadEn;
    HCTxPortData <= next_HCTxPortData;
    HCTxPortCntl <= next_HCTxPortCntl;
    HCTxPortWEn <= next_HCTxPortWEn;
    HCTxPortReq <= next_HCTxPortReq;
    frameNum <= next_frameNum;
  end
end
 
endmodule

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Subversion Repositories usbhostslave

[/] [usbhostslave/] [trunk/] [RTL/] [hostController/] [sendpacket.v] - Blame information for rev 9

Line No.	Rev	Author	Line
1	5	sfielding
2			`//////////////////////////////////////////////////////////////////////`
3			`//// ////`
4			`//// sendPacket`
5			`//// ////`
6			`//// This file is part of the usbhostslave opencores effort.`
7			`//// http://www.opencores.org/cores/usbhostslave/ ////`
8			`//// ////`
9			`//// Module Description: ////`
10			`////`
11			`//// ////`
12			`//// To Do: ////`
13			`////`
14			`//// ////`
15			`//// Author(s): ////`
16			`//// - Steve Fielding, sfielding@base2designs.com ////`
17			`//// ////`
18			`//////////////////////////////////////////////////////////////////////`
19			`//// ////`
20			`//// Copyright (C) 2004 Steve Fielding and OPENCORES.ORG ////`
21			`//// ////`
22			`//// This source file may be used and distributed without ////`
23			`//// restriction provided that this copyright statement is not ////`
24			`//// removed from the file and that any derivative work contains ////`
25			`//// the original copyright notice and the associated disclaimer. ////`
26			`//// ////`
27			`//// This source file is free software; you can redistribute it ////`
28			`//// and/or modify it under the terms of the GNU Lesser General ////`
29			`//// Public License as published by the Free Software Foundation; ////`
30			`//// either version 2.1 of the License, or (at your option) any ////`
31			`//// later version. ////`
32			`//// ////`
33			`//// This source is distributed in the hope that it will be ////`
34			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
35			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
36			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
37			`//// details. ////`
38			`//// ////`
39			`//// You should have received a copy of the GNU Lesser General ////`
40			`//// Public License along with this source; if not, download it ////`
41			`//// from http://www.opencores.org/lgpl.shtml ////`
42			`//// ////`
43			`//////////////////////////////////////////////////////////////////////`
44			`//`
45			`timescale 1ns / 1ps
46			`include "usbSerialInterfaceEngine_h.v"
47			`include "usbConstants_h.v"
48
49
50
51			`module sendPacket (clk, fifoData, fifoEmpty, fifoReadEn, frameNum, HCTxPortCntl, HCTxPortData, HCTxPortGnt, HCTxPortRdy, HCTxPortReq, HCTxPortWEn, PID, rst, sendPacketRdy, sendPacketWEn, TxAddr, TxEndP);`
52			`input clk;`
53			`input [7:0]fifoData;`
54			`input fifoEmpty;`
55			`input HCTxPortGnt;`
56			`input HCTxPortRdy;`
57			`input [3:0]PID;`
58			`input rst;`
59			`input sendPacketWEn;`
60			`input [6:0]TxAddr;`
61			`input [3:0]TxEndP;`
62			`output fifoReadEn;`
63			`output [10:0]frameNum;`
64			`output [7:0]HCTxPortCntl;`
65			`output [7:0]HCTxPortData;`
66			`output HCTxPortReq;`
67			`output HCTxPortWEn;`
68			`output sendPacketRdy;`
69
70			`wire clk;`
71			`wire [7:0]fifoData;`
72			`wire fifoEmpty;`
73			`reg fifoReadEn, next_fifoReadEn;`
74			`reg [10:0]frameNum, next_frameNum;`
75			`reg [7:0]HCTxPortCntl, next_HCTxPortCntl;`
76			`reg [7:0]HCTxPortData, next_HCTxPortData;`
77			`wire HCTxPortGnt;`
78			`wire HCTxPortRdy;`
79			`reg HCTxPortReq, next_HCTxPortReq;`
80			`reg HCTxPortWEn, next_HCTxPortWEn;`
81			`wire [3:0]PID;`
82			`wire rst;`
83			`reg sendPacketRdy, next_sendPacketRdy;`
84			`wire sendPacketWEn;`
85			`wire [6:0]TxAddr;`
86			`wire [3:0]TxEndP;`
87
88			`// diagram signals declarations`
89			`reg [7:0]PIDNotPID;`
90
91			`// BINARY ENCODED state machine: sndPkt`
92			`// State codes definitions:`
93			`define START_SP 5'b00000
94			`define WAIT_ENABLE 5'b00001
95			`define SP_WAIT_GNT 5'b00010
96			`define SEND_PID_WAIT_RDY 5'b00011
97			`define SEND_PID_FIN 5'b00100
98			`define FIN_SP 5'b00101
99			`define OUT_IN_SETUP_WAIT_RDY1 5'b00110
100			`define OUT_IN_SETUP_WAIT_RDY2 5'b00111
101			`define OUT_IN_SETUP_FIN 5'b01000
102			`define SEND_SOF_FIN1 5'b01001
103			`define SEND_SOF_WAIT_RDY3 5'b01010
104			`define SEND_SOF_WAIT_RDY4 5'b01011
105			`define DATA0_DATA1_READ_FIFO 5'b01100
106			`define DATA0_DATA1_WAIT_READ_FIFO 5'b01101
107			`define DATA0_DATA1_FIFO_EMPTY 5'b01110
108			`define DATA0_DATA1_FIN 5'b01111
109			`define DATA0_DATA1_TERM_BYTE 5'b10000
110			`define OUT_IN_SETUP_CLR_WEN1 5'b10001
111			`define SEND_SOF_CLR_WEN1 5'b10010
112			`define DATA0_DATA1_CLR_WEN 5'b10011
113			`define DATA0_DATA1_CLR_REN 5'b10100
114
115			`reg [4:0]CurrState_sndPkt, NextState_sndPkt;`
116
117			`// Diagram actions (continuous assignments allowed only: assign ...)`
118			`always @(PID)`
119			`begin`
120			`PIDNotPID <= { (PID ^ 4'hf), PID };`
121			`end`
122
123
124			`// Machine: sndPkt`
125
126			`// NextState logic (combinatorial)`
127			`always @ (sendPacketWEn or HCTxPortGnt or HCTxPortRdy or PIDNotPID or PID or TxEndP or TxAddr or frameNum or fifoData or fifoEmpty or sendPacketRdy or fifoReadEn or HCTxPortData or HCTxPortCntl or HCTxPortWEn or HCTxPortReq or CurrState_sndPkt)`
128			`begin`
129			`NextState_sndPkt <= CurrState_sndPkt;`
130			`// Set default values for outputs and signals`
131			`next_sendPacketRdy <= sendPacketRdy;`
132			`next_fifoReadEn <= fifoReadEn;`
133			`next_HCTxPortData <= HCTxPortData;`
134			`next_HCTxPortCntl <= HCTxPortCntl;`
135			`next_HCTxPortWEn <= HCTxPortWEn;`
136			`next_HCTxPortReq <= HCTxPortReq;`
137			`next_frameNum <= frameNum;`
138			`case (CurrState_sndPkt) // synopsys parallel_case full_case`
139			`START_SP:
140			`begin`
141			NextState_sndPkt <= `WAIT_ENABLE;
142			`end`
143			`WAIT_ENABLE:
144			`begin`
145			`if (sendPacketWEn == 1'b1)`
146			`begin`
147			NextState_sndPkt <= `SP_WAIT_GNT;
148			`next_sendPacketRdy <= 1'b0;`
149			`next_HCTxPortReq <= 1'b1;`
150			`end`
151			`end`
152			`SP_WAIT_GNT:
153			`begin`
154			`if (HCTxPortGnt == 1'b1)`
155			`begin`
156			NextState_sndPkt <= `SEND_PID_WAIT_RDY;
157			`end`
158			`end`
159			`FIN_SP:
160			`begin`
161			NextState_sndPkt <= `WAIT_ENABLE;
162			`next_sendPacketRdy <= 1'b1;`
163			`next_HCTxPortReq <= 1'b0;`
164			`end`
165			`SEND_PID_WAIT_RDY:
166			`begin`
167			`if (HCTxPortRdy == 1'b1)`
168			`begin`
169			NextState_sndPkt <= `SEND_PID_FIN;
170			`next_HCTxPortWEn <= 1'b1;`
171			`next_HCTxPortData <= PIDNotPID;`
172			next_HCTxPortCntl <= `TX_PACKET_START;
173			`end`
174			`end`
175			`SEND_PID_FIN:
176			`begin`
177			`next_HCTxPortWEn <= 1'b0;`
178			if (PID == `DATA0 \|\| PID == `DATA1)
179			`begin`
180			NextState_sndPkt <= `DATA0_DATA1_FIFO_EMPTY;
181			`end`
182			else if (PID == `SOF)
183			`begin`
184			NextState_sndPkt <= `SEND_SOF_WAIT_RDY3;
185			`end`
186			else if (PID == `OUT \|\|
187			PID == `IN \|\|
188			PID == `SETUP)
189			`begin`
190			NextState_sndPkt <= `OUT_IN_SETUP_WAIT_RDY1;
191			`end`
192			`else`
193			`begin`
194			NextState_sndPkt <= `FIN_SP;
195			`end`
196			`end`
197			`OUT_IN_SETUP_WAIT_RDY1:
198			`begin`
199			`if (HCTxPortRdy == 1'b1)`
200			`begin`
201			NextState_sndPkt <= `OUT_IN_SETUP_CLR_WEN1;
202			`next_HCTxPortWEn <= 1'b1;`
203			`next_HCTxPortData <= {TxEndP[0], TxAddr[6:0]};`
204			next_HCTxPortCntl <= `TX_PACKET_STREAM;
205			`end`
206			`end`
207			`OUT_IN_SETUP_WAIT_RDY2:
208			`begin`
209			`if (HCTxPortRdy == 1'b1)`
210			`begin`
211			NextState_sndPkt <= `OUT_IN_SETUP_FIN;
212			`next_HCTxPortWEn <= 1'b1;`
213			`next_HCTxPortData <= {5'b00000, TxEndP[3:1]};`
214			next_HCTxPortCntl <= `TX_PACKET_STREAM;
215			`end`
216			`end`
217			`OUT_IN_SETUP_FIN:
218			`begin`
219			`next_HCTxPortWEn <= 1'b0;`
220			NextState_sndPkt <= `FIN_SP;
221			`end`
222			`OUT_IN_SETUP_CLR_WEN1:
223			`begin`
224			`next_HCTxPortWEn <= 1'b0;`
225			NextState_sndPkt <= `OUT_IN_SETUP_WAIT_RDY2;
226			`end`
227			`SEND_SOF_FIN1:
228			`begin`
229			`next_HCTxPortWEn <= 1'b0;`
230			`next_frameNum <= frameNum + 1'b1;`
231			NextState_sndPkt <= `FIN_SP;
232			`end`
233			`SEND_SOF_WAIT_RDY3:
234			`begin`
235			`if (HCTxPortRdy == 1'b1)`
236			`begin`
237			NextState_sndPkt <= `SEND_SOF_CLR_WEN1;
238			`next_HCTxPortWEn <= 1'b1;`
239			`next_HCTxPortData <= frameNum[7:0];`
240			next_HCTxPortCntl <= `TX_PACKET_STREAM;
241			`end`
242			`end`
243			`SEND_SOF_WAIT_RDY4:
244			`begin`
245			`if (HCTxPortRdy == 1'b1)`
246			`begin`
247			NextState_sndPkt <= `SEND_SOF_FIN1;
248			`next_HCTxPortWEn <= 1'b1;`
249			`next_HCTxPortData <= {5'b00000, frameNum[10:8]};`
250			next_HCTxPortCntl <= `TX_PACKET_STREAM;
251			`end`
252			`end`
253			`SEND_SOF_CLR_WEN1:
254			`begin`
255			`next_HCTxPortWEn <= 1'b0;`
256			NextState_sndPkt <= `SEND_SOF_WAIT_RDY4;
257			`end`
258			`DATA0_DATA1_READ_FIFO:
259			`begin`
260			`next_HCTxPortWEn <= 1'b1;`
261			`next_HCTxPortData <= fifoData;`
262			next_HCTxPortCntl <= `TX_PACKET_STREAM;
263			NextState_sndPkt <= `DATA0_DATA1_CLR_WEN;
264			`end`
265			`DATA0_DATA1_WAIT_READ_FIFO:
266			`begin`
267			`if (HCTxPortRdy == 1'b1)`
268			`begin`
269			NextState_sndPkt <= `DATA0_DATA1_CLR_REN;
270			`next_fifoReadEn <= 1'b1;`
271			`end`
272			`end`
273			`DATA0_DATA1_FIFO_EMPTY:
274			`begin`
275			`if (fifoEmpty == 1'b0)`
276			`begin`
277			NextState_sndPkt <= `DATA0_DATA1_WAIT_READ_FIFO;
278			`end`
279			`else`
280			`begin`
281			NextState_sndPkt <= `DATA0_DATA1_TERM_BYTE;
282			`end`
283			`end`
284			`DATA0_DATA1_FIN:
285			`begin`
286			`next_HCTxPortWEn <= 1'b0;`
287			NextState_sndPkt <= `FIN_SP;
288			`end`
289			`DATA0_DATA1_TERM_BYTE:
290			`begin`
291			`if (HCTxPortRdy == 1'b1)`
292			`begin`
293			NextState_sndPkt <= `DATA0_DATA1_FIN;
294			`//Last byte is not valid data,`
295			`//but the 'TX_PACKET_STOP' flag is required`
296			`//by the SIE state machine to detect end of data packet`
297			`next_HCTxPortWEn <= 1'b1;`
298			`next_HCTxPortData <= 8'h00;`
299			next_HCTxPortCntl <= `TX_PACKET_STOP;
300			`end`
301			`end`
302			`DATA0_DATA1_CLR_WEN:
303			`begin`
304			`next_HCTxPortWEn <= 1'b0;`
305			NextState_sndPkt <= `DATA0_DATA1_FIFO_EMPTY;
306			`end`
307			`DATA0_DATA1_CLR_REN:
308			`begin`
309			`next_fifoReadEn <= 1'b0;`
310			NextState_sndPkt <= `DATA0_DATA1_READ_FIFO;
311			`end`
312			`endcase`
313			`end`
314
315			`// Current State Logic (sequential)`
316			`always @ (posedge clk)`
317			`begin`
318			`if (rst)`
319			CurrState_sndPkt <= `START_SP;
320			`else`
321			`CurrState_sndPkt <= NextState_sndPkt;`
322			`end`
323
324			`// Registered outputs logic`
325			`always @ (posedge clk)`
326			`begin`
327			`if (rst)`
328			`begin`
329			`sendPacketRdy <= 1'b1;`
330			`fifoReadEn <= 1'b0;`
331			`HCTxPortData <= 8'h00;`
332			`HCTxPortCntl <= 8'h00;`
333			`HCTxPortWEn <= 1'b0;`
334			`HCTxPortReq <= 1'b0;`
335			`frameNum <= 11'h000;`
336			`end`
337			`else`
338			`begin`
339			`sendPacketRdy <= next_sendPacketRdy;`
340			`fifoReadEn <= next_fifoReadEn;`
341			`HCTxPortData <= next_HCTxPortData;`
342			`HCTxPortCntl <= next_HCTxPortCntl;`
343			`HCTxPortWEn <= next_HCTxPortWEn;`
344			`HCTxPortReq <= next_HCTxPortReq;`
345			`frameNum <= next_frameNum;`
346			`end`
347			`end`
348
349	2	sfielding	`endmodule`