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xoddr.v
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////////////////////////////////////////////////////////////////////////////////
//
// Filename: xoddr.v
// {{{
// Project: A Set of Wishbone Controlled SPI Flash Controllers
//
// Purpose:
//
// Creator: Dan Gisselquist, Ph.D.
// Gisselquist Technology, LLC
//
////////////////////////////////////////////////////////////////////////////////
// }}}
// Copyright (C) 2015-2021, Gisselquist Technology, LLC
// {{{
// This program is free software (firmware): you can redistribute it and/or
// modify it under the terms of the GNU General Public License as published
// by the Free Software Foundation, either version 3 of the License, or (at
// your option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. (It's in the $(ROOT)/doc directory. Run make with no
// target there if the PDF file isn't present.) If not, see
// <http://www.gnu.org/licenses/> for a copy.
// }}}
// License: GPL, v3, as defined and found on www.gnu.org,
// {{{
// http://www.gnu.org/licenses/gpl.html
//
//
////////////////////////////////////////////////////////////////////////////////
//
//
`default_nettype none
// }}}
module xoddr(
// {{{
input wire i_clk,
input wire [1:0] i_v,
output wire o_pin
// }}}
);
wire w_internal;
reg last;
always @(posedge i_clk)
last <= i_v[1];
ODDR #(
// {{{
.DDR_CLK_EDGE("SAME_EDGE"),
.INIT(1'b0),
.SRTYPE("SYNC")
// }}}
) ODDRi(
// {{{
.Q(o_pin),
.C(i_clk),
.CE(1'b1),
.D1(last), // Negative clock edge (goes first)
.D2(i_v[0]), // Positive clock edge
.R(1'b0),
.S(1'b0));
// }}}
endmodule