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authorMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
committerMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
commitfd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch)
tree3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp2/fifo/fifo_cascade.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
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Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/fifo/fifo_cascade.v')
-rw-r--r--fpga/usrp2/fifo/fifo_cascade.v69
1 files changed, 0 insertions, 69 deletions
diff --git a/fpga/usrp2/fifo/fifo_cascade.v b/fpga/usrp2/fifo/fifo_cascade.v
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-//
-// 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/>.
-//
-
-
-
-// This FIFO exists to provide an intermediate point for the data on its
-// long trek from one RAM (in the buffer pool) to another (in the longfifo)
-// The shortfifo is more flexible in its placement since it is based on
-// distributed RAM
-
-// This one has the shortfifo on both the in and out sides.
-module fifo_cascade
- #(parameter WIDTH=32, SIZE=9)
- (input clk, input reset, input clear,
- input [WIDTH-1:0] datain,
- input src_rdy_i,
- output dst_rdy_o,
- output [WIDTH-1:0] dataout,
- output src_rdy_o,
- input dst_rdy_i,
- output [15:0] space,
- output [15:0] occupied);
-
- wire [WIDTH-1:0] data_int, data_int2;
- wire src_rdy_1, dst_rdy_1, src_rdy_2, dst_rdy_2;
-
- wire [4:0] s1_space, s1_occupied, s2_space, s2_occupied;
- wire [15:0] l_space, l_occupied;
-
- fifo_short #(.WIDTH(WIDTH)) head_fifo
- (.clk(clk),.reset(reset),.clear(clear),
- .datain(datain), .src_rdy_i(src_rdy_i), .dst_rdy_o(dst_rdy_o),
- .dataout(data_int), .src_rdy_o(src_rdy_1), .dst_rdy_i(dst_rdy_1),
- .space(s1_space),.occupied(s1_occupied) );
-
- fifo_long #(.WIDTH(WIDTH),.SIZE(SIZE)) middle_fifo
- (.clk(clk),.reset(reset),.clear(clear),
- .datain(data_int), .src_rdy_i(src_rdy_1), .dst_rdy_o(dst_rdy_1),
- .dataout(data_int2), .src_rdy_o(src_rdy_2), .dst_rdy_i(dst_rdy_2),
- .space(l_space),.occupied(l_occupied) );
-
- fifo_short #(.WIDTH(WIDTH)) tail_fifo
- (.clk(clk),.reset(reset),.clear(clear),
- .datain(data_int2), .src_rdy_i(src_rdy_2), .dst_rdy_o(dst_rdy_2),
- .dataout(dataout), .src_rdy_o(src_rdy_o), .dst_rdy_i(dst_rdy_i),
- .space(s2_space),.occupied(s2_occupied) );
-
- assign space = {11'b0,s1_space} + {11'b0,s2_space} + l_space;
- assign occupied = {11'b0,s1_occupied} + {11'b0,s2_occupied} + l_occupied;
-
-endmodule // cascadefifo2
-
-
-
-