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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/fifo72_to_fifo36.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
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Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/fifo/fifo72_to_fifo36.v')
-rw-r--r--fpga/usrp2/fifo/fifo72_to_fifo36.v80
1 files changed, 0 insertions, 80 deletions
diff --git a/fpga/usrp2/fifo/fifo72_to_fifo36.v b/fpga/usrp2/fifo/fifo72_to_fifo36.v
deleted file mode 100644
index c365f0196..000000000
--- a/fpga/usrp2/fifo/fifo72_to_fifo36.v
+++ /dev/null
@@ -1,80 +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/>.
-//
-
-
-// Parameter LE tells us if we are little-endian.
-// Little-endian means send lower 16 bits first.
-// Default is big endian (network order), send upper bits first.
-
-module fifo72_to_fifo36
- #(parameter LE=0)
- (input clk, input reset, input clear,
- input [71:0] f72_datain,
- input f72_src_rdy_i,
- output f72_dst_rdy_o,
-
- output [35:0] f36_dataout,
- output f36_src_rdy_o,
- input f36_dst_rdy_i );
-
- wire [35:0] f36_data_int;
- wire f36_src_rdy_int, f36_dst_rdy_int;
- wire [71:0] f72_data_int;
- wire f72_src_rdy_int, f72_dst_rdy_int;
-
- // Shortfifo on input to guarantee no deadlock
- fifo_short #(.WIDTH(72)) head_fifo
- (.clk(clk),.reset(reset),.clear(clear),
- .datain(f72_datain), .src_rdy_i(f72_src_rdy_i), .dst_rdy_o(f72_dst_rdy_o),
- .dataout(f72_data_int), .src_rdy_o(f72_src_rdy_int), .dst_rdy_i(f72_dst_rdy_int),
- .space(),.occupied() );
-
- // Main fifo72_to_fifo36, needs shortfifos to guarantee no deadlock
- wire [2:0] f72_occ_int = f72_data_int[68:66];
- wire f72_sof_int = f72_data_int[64];
- wire f72_eof_int = f72_data_int[65];
-
- reg phase;
- wire half_line = f72_eof_int & ( (f72_occ_int==1)|(f72_occ_int==2)|(f72_occ_int==3)|(f72_occ_int==4) );
-
- assign f36_data_int[31:0] = (LE ^ phase) ? f72_data_int[31:0] : f72_data_int[63:32];
- assign f36_data_int[32] = phase ? 0 : f72_sof_int;
- assign f36_data_int[33] = phase ? f72_eof_int : half_line;
- assign f36_data_int[35:34] = f36_data_int[33] ? f72_occ_int[1:0] : 2'b00;
-
- assign f36_src_rdy_int = f72_src_rdy_int;
- assign f72_dst_rdy_int = (phase | half_line) & f36_dst_rdy_int;
-
- wire f36_xfer = f36_src_rdy_int & f36_dst_rdy_int;
- wire f72_xfer = f72_src_rdy_int & f72_dst_rdy_int;
-
- always @(posedge clk)
- if(reset)
- phase <= 0;
- else if(f72_xfer)
- phase <= 0;
- else if(f36_xfer)
- phase <= 1;
-
- // Shortfifo on output to guarantee no deadlock
- fifo_short #(.WIDTH(36)) tail_fifo
- (.clk(clk),.reset(reset),.clear(clear),
- .datain(f36_data_int), .src_rdy_i(f36_src_rdy_int), .dst_rdy_o(f36_dst_rdy_int),
- .dataout(f36_dataout), .src_rdy_o(f36_src_rdy_o), .dst_rdy_i(f36_dst_rdy_i),
- .space(),.occupied() );
-
-endmodule // fifo72_to_fifo36