3 // USRP - Universal Software Radio Peripheral
5 // Copyright (C) 2007 Corgan Enterprises LLC
7 // This program is free software; you can redistribute it and/or modify
8 // it under the terms of the GNU General Public License as published by
9 // the Free Software Foundation; either version 2 of the License, or
10 // (at your option) any later version.
12 // This program is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA
22 module atr_delay(clk_i,rst_i,ena_i,tx_empty_i,tx_delay_i,rx_delay_i,atr_tx_o);
27 input [11:0] tx_delay_i;
28 input [11:0] rx_delay_i;
34 `define ST_RX_DELAY 4'b0001
36 `define ST_TX_DELAY 4'b0100
39 always @(posedge clk_i)
50 state <= `ST_TX_DELAY;
63 state <= `ST_RX_DELAY;
80 assign atr_tx_o = (state == `ST_TX) | (state == `ST_RX_DELAY);
82 endmodule // atr_delay