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https://opencores.org/ocsvn/usbhostslave/usbhostslave/trunk
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| Rev 9 |
Rev 12 |
| Line 153... |
Line 153... |
begin
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begin
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NextState_prcTxB <= `PTBY_WAIT_GNT;
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NextState_prcTxB <= `PTBY_WAIT_GNT;
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next_processTxByteRdy <= 1'b0;
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next_processTxByteRdy <= 1'b0;
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next_TxByte <= TxByteIn;
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next_TxByte <= TxByteIn;
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next_TxByteCtrl <= TxByteCtrlIn;
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next_TxByteCtrl <= TxByteCtrlIn;
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next_TXOneCount <= 1;
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next_TXOneCount <= 4'h0;
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next_TXLineState <= JBit;
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next_TXLineState <= JBit;
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next_USBWireReq <= 1'b1;
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next_USBWireReq <= 1'b1;
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end
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end
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else if (processTxByteWEn == 1'b1)
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else if (processTxByteWEn == 1'b1)
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begin
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begin
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| Line 203... |
Line 203... |
if (TxByte[0] == 1'b1) //If this bit is 1, then
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if (TxByte[0] == 1'b1) //If this bit is 1, then
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next_TXOneCount <= TXOneCount + 1'b1;
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next_TXOneCount <= TXOneCount + 1'b1;
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//increment 'TXOneCount'
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//increment 'TXOneCount'
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else //else this is a zero bit
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else //else this is a zero bit
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begin
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begin
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next_TXOneCount <= 4'h1;
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next_TXOneCount <= 4'h0;
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//reset 'TXOneCount'
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//reset 'TXOneCount'
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if (TXLineState == JBit)
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if (TXLineState == JBit)
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next_TXLineState <= KBit;
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next_TXLineState <= KBit;
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//toggle the line state
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//toggle the line state
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else
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else
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| Line 226... |
Line 226... |
end
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end
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end
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end
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`SEND_BYTE_CHK:
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`SEND_BYTE_CHK:
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begin
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begin
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next_USBWireWEn <= 1'b0;
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next_USBWireWEn <= 1'b0;
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if (TXOneCount == 4'h6)
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if (TXOneCount == `MAX_CONSEC_SAME_BITS)
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begin
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begin
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NextState_prcTxB <= `SEND_BYTE_BIT_STUFF;
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NextState_prcTxB <= `SEND_BYTE_BIT_STUFF;
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end
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end
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else if (i != 4'h8)
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else if (i != 4'h8)
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begin
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begin
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| Line 241... |
Line 241... |
NextState_prcTxB <= `STOP_CHK;
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NextState_prcTxB <= `STOP_CHK;
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end
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end
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end
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end
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`SEND_BYTE_BIT_STUFF:
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`SEND_BYTE_BIT_STUFF:
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begin
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begin
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next_TXOneCount <= 4'h1;
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next_TXOneCount <= 4'h0;
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//reset 'TXOneCount'
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//reset 'TXOneCount'
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if (TXLineState == JBit)
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if (TXLineState == JBit)
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next_TXLineState <= KBit;
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next_TXLineState <= KBit;
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//toggle the line state
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//toggle the line state
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else
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else
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