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Diffstat (limited to 'tests/openmsp430/rtl/omsp_wakeup_cell.v')
| -rw-r--r-- | tests/openmsp430/rtl/omsp_wakeup_cell.v | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/tests/openmsp430/rtl/omsp_wakeup_cell.v b/tests/openmsp430/rtl/omsp_wakeup_cell.v new file mode 100644 index 000000000..6e5fcd880 --- /dev/null +++ b/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 + + + + |