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//----------------------------------------------------------------------------
// Copyright (C) 2009 , Olivier Girard
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the authors nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE
//
//----------------------------------------------------------------------------
//
// *File Name: omsp_wakeup_cell.v
//
// *Module Description:
// Generic Wakeup cell
//
// *Author(s):
// - Olivier Girard, olgirard@gmail.com
//
//----------------------------------------------------------------------------
// $Rev: 103 $
// $LastChangedBy: olivier.girard $
// $LastChangedDate: 2011-03-05 15:44:48 +0100 (Sat, 05 Mar 2011) $
//----------------------------------------------------------------------------
module omsp_wakeup_cell (
// OUTPUTs
wkup_out, // Wakup signal (asynchronous)
// INPUTs
scan_clk, // Scan clock
scan_mode, // Scan mode
scan_rst, // Scan reset
wkup_clear, // Glitch free wakeup event clear
wkup_event // Glitch free asynchronous wakeup event
);
// OUTPUTs
//=========
output wkup_out; // Wakup signal (asynchronous)
// INPUTs
//=========
input scan_clk; // Scan clock
input scan_mode; // Scan mode
input scan_rst; // Scan reset
input wkup_clear; // Glitch free wakeup event clear
input wkup_event; // Glitch free asynchronous wakeup event
//=============================================================================
// 1) AND GATE
//=============================================================================
// Scan stuff for the ASIC mode
`ifdef ASIC
wire wkup_rst;
omsp_scan_mux scan_mux_rst (
.scan_mode (scan_mode),
.data_in_scan (scan_rst),
.data_in_func (wkup_clear),
.data_out (wkup_rst)
);
wire wkup_clk;
omsp_scan_mux scan_mux_clk (
.scan_mode (scan_mode),
.data_in_scan (scan_clk),
.data_in_func (wkup_event),
.data_out (wkup_clk)
);
`else
wire wkup_rst = wkup_clear;
wire wkup_clk = wkup_event;
`endif
// Wakeup capture
reg wkup_out;
always @(posedge wkup_clk or posedge wkup_rst)
if (wkup_rst) wkup_out <= 1'b0;
else wkup_out <= 1'b1;
endmodule // omsp_wakeup_cell
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