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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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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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//
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//
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// $Log: not supported by cvs2svn $
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// $Log: not supported by cvs2svn $
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// Revision 1.4 2002/03/25 13:16:15 mohor
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// tdo_padoen_o changed to tdo_padoe_o. Signal was always active high, just
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// not named correctly.
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//
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// Revision 1.3 2002/03/12 14:30:05 mohor
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// Revision 1.3 2002/03/12 14:30:05 mohor
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// Few outputs for boundary scan chain added.
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// Few outputs for boundary scan chain added.
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//
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//
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// Revision 1.2 2002/03/12 10:31:53 mohor
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// Revision 1.2 2002/03/12 10:31:53 mohor
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// tap_top and dbg_top modules are put into two separate modules. tap_top
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// tap_top and dbg_top modules are put into two separate modules. tap_top
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`include "dbg_defines.v"
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`include "dbg_defines.v"
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// Top module
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// Top module
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module tap_top(
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module tap_top(
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// JTAG pins
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// JTAG pins
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tms_pad_i, tck_pad_i, trst_pad_i, tdi_pad_i, tdo_pad_o, tdo_padoe_o,
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tms_pad_i, tck_pad_i, trst_pad_i, tdi_pad_i, tdo_pad_o, tdo_padoen_o,
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// TAP states
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// TAP states
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ShiftDR, Exit1DR, UpdateDR, UpdateDR_q, CaptureDR,
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ShiftDR, Exit1DR, UpdateDR, UpdateDR_q, CaptureDR,
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// Instructions
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// Instructions
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input tms_pad_i; // JTAG test mode select pad
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input tms_pad_i; // JTAG test mode select pad
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input tck_pad_i; // JTAG test clock pad
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input tck_pad_i; // JTAG test clock pad
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input trst_pad_i; // JTAG test reset pad
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input trst_pad_i; // JTAG test reset pad
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input tdi_pad_i; // JTAG test data input pad
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input tdi_pad_i; // JTAG test data input pad
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output tdo_pad_o; // JTAG test data output pad
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output tdo_pad_o; // JTAG test data output pad
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output tdo_padoe_o; // Output enable for JTAG test data output pad
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output tdo_padoen_o; // Output enable for JTAG test data output pad
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// TAP states
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// TAP states
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output ShiftDR;
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output ShiftDR;
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output Exit1DR;
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output Exit1DR;
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output UpdateDR;
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output UpdateDR;
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endcase
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endcase
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end
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end
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end
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end
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// Tristate control for tdo_pad_o pin
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// Tristate control for tdo_pad_o pin
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assign tdo_padoe_o = ShiftIR | ShiftDR | Exit1IR | Exit1DR | UpdateDR;
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assign tdo_padoen_o = ShiftIR | ShiftDR | Exit1IR | Exit1DR | UpdateDR;
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/**********************************************************************************
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/**********************************************************************************
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* *
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* *
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* End: Multiplexing TDO data *
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* End: Multiplexing TDO data *
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* *
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* *
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