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author | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
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committer | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
commit | fd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch) | |
tree | 3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp2/fifo/fifo19_mux.v | |
parent | 3b66804e41891e358c790b453a7a59ec7462dba4 (diff) | |
download | uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.gz uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.bz2 uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.zip |
Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/fifo/fifo19_mux.v')
-rw-r--r-- | fpga/usrp2/fifo/fifo19_mux.v | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/fpga/usrp2/fifo/fifo19_mux.v b/fpga/usrp2/fifo/fifo19_mux.v deleted file mode 100644 index a23ac2bb4..000000000 --- a/fpga/usrp2/fifo/fifo19_mux.v +++ /dev/null @@ -1,94 +0,0 @@ -// -// Copyright 2011 Ettus Research LLC -// -// This program is free software: 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 -// MERCHANTABILITY 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. If not, see <http://www.gnu.org/licenses/>. -// - - -// Mux packets from multiple FIFO interfaces onto a single one. -// Can alternate or give priority to one port (port 0) -// In prio mode, port 1 will never get access if port 0 is always busy - -module fifo19_mux - #(parameter prio = 0) - (input clk, input reset, input clear, - input [18:0] data0_i, input src0_rdy_i, output dst0_rdy_o, - input [18:0] data1_i, input src1_rdy_i, output dst1_rdy_o, - output [18:0] data_o, output src_rdy_o, input dst_rdy_i); - - wire [18:0] data0_int, data1_int; - wire src0_rdy_int, dst0_rdy_int, src1_rdy_int, dst1_rdy_int; - - fifo_short #(.WIDTH(19)) mux_fifo_in0 - (.clk(clk), .reset(reset), .clear(clear), - .datain(data0_i), .src_rdy_i(src0_rdy_i), .dst_rdy_o(dst0_rdy_o), - .dataout(data0_int), .src_rdy_o(src0_rdy_int), .dst_rdy_i(dst0_rdy_int)); - - fifo_short #(.WIDTH(19)) mux_fifo_in1 - (.clk(clk), .reset(reset), .clear(clear), - .datain(data1_i), .src_rdy_i(src1_rdy_i), .dst_rdy_o(dst1_rdy_o), - .dataout(data1_int), .src_rdy_o(src1_rdy_int), .dst_rdy_i(dst1_rdy_int)); - - localparam MUX_IDLE0 = 0; - localparam MUX_DATA0 = 1; - localparam MUX_IDLE1 = 2; - localparam MUX_DATA1 = 3; - - reg [1:0] state; - - wire eof0 = data0_int[17]; - wire eof1 = data1_int[17]; - - wire [18:0] data_int; - wire src_rdy_int, dst_rdy_int; - - always @(posedge clk) - if(reset | clear) - state <= MUX_IDLE0; - else - case(state) - MUX_IDLE0 : - if(src0_rdy_int) - state <= MUX_DATA0; - else if(src1_rdy_int) - state <= MUX_DATA1; - - MUX_DATA0 : - if(src0_rdy_int & dst_rdy_int & eof0) - state <= prio ? MUX_IDLE0 : MUX_IDLE1; - - MUX_IDLE1 : - if(src1_rdy_int) - state <= MUX_DATA1; - else if(src0_rdy_int) - state <= MUX_DATA0; - - MUX_DATA1 : - if(src1_rdy_int & dst_rdy_int & eof1) - state <= MUX_IDLE0; - - default : - state <= MUX_IDLE0; - endcase // case (state) - - assign dst0_rdy_int = (state==MUX_DATA0) ? dst_rdy_int : 0; - assign dst1_rdy_int = (state==MUX_DATA1) ? dst_rdy_int : 0; - assign src_rdy_int = (state==MUX_DATA0) ? src0_rdy_int : (state==MUX_DATA1) ? src1_rdy_int : 0; - assign data_int = (state==MUX_DATA0) ? data0_int : data1_int; - - fifo_short #(.WIDTH(19)) mux_fifo - (.clk(clk), .reset(reset), .clear(clear), - .datain(data_int), .src_rdy_i(src_rdy_int), .dst_rdy_o(dst_rdy_int), - .dataout(data_o), .src_rdy_o(src_rdy_o), .dst_rdy_i(dst_rdy_i)); -endmodule // fifo19_mux |