initial import

tests/openmsp430/rtl/omsp_wakeup_cell.v

@@ -0,0 +1,108 @@
+//----------------------------------------------------------------------------
+// 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
+
+
+
+