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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/simple_gemac/ethrx_realign.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
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Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/simple_gemac/ethrx_realign.v')
-rw-r--r--fpga/usrp2/simple_gemac/ethrx_realign.v89
1 files changed, 0 insertions, 89 deletions
diff --git a/fpga/usrp2/simple_gemac/ethrx_realign.v b/fpga/usrp2/simple_gemac/ethrx_realign.v
deleted file mode 100644
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--- a/fpga/usrp2/simple_gemac/ethrx_realign.v
+++ /dev/null
@@ -1,89 +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/>.
-//
-
-
-// NOTE: Will not work with single-line frames
-
-module ethrx_realign
- (input clk, input reset, input clear,
- input [35:0] datain, input src_rdy_i, output dst_rdy_o,
- output [35:0] dataout, output src_rdy_o, input dst_rdy_i);
-
- reg [1:0] state;
- reg [15:0] held;
- reg [1:0] held_occ;
-
- wire xfer_in = src_rdy_i & dst_rdy_o;
- wire xfer_out = src_rdy_o & dst_rdy_i;
-
- wire sof_in = datain[32];
- wire eof_in = datain[33];
- wire [1:0] occ_in = datain[35:34];
- wire sof_out, eof_out;
- wire [1:0] occ_out;
-
- always @(posedge clk)
- if(reset | clear)
- begin
- held <= 0;
- held_occ <= 0;
- end
- else if(xfer_in)
- begin
- held <= datain[15:0];
- held_occ <= datain[35:34];
- end
-
- localparam RE_IDLE = 0;
- localparam RE_HELD = 1;
- localparam RE_DONE = 2;
-
- always @(posedge clk)
- if(reset | clear)
- state <= RE_IDLE;
- else
- case(state)
- RE_IDLE :
- if(src_rdy_i & dst_rdy_i)
- if(eof_in)
- state <= RE_DONE;
- else
- state <= RE_HELD;
-
- RE_HELD :
- if(src_rdy_i & dst_rdy_i & eof_in)
- if((occ_in==0)|(occ_in==3))
- state <= RE_DONE;
- else
- state <= RE_IDLE;
-
- RE_DONE :
- if(dst_rdy_i)
- state <= RE_IDLE;
-
- endcase // case (state)
-
-
- assign sof_out = (state == RE_IDLE);
- assign eof_out = (state == RE_DONE) | (occ_in == 1) | (occ_in == 2);
- assign occ_out = (state == RE_DONE) ? ((held_occ == 3) ? 1 : 2) :
- (occ_in == 1) ? 3 : 0;
-
- assign dataout = {occ_out,eof_out,sof_out,held,datain[31:16]};
- assign src_rdy_o = (state == RE_DONE) | src_rdy_i;
- assign dst_rdy_o = dst_rdy_i & ((state == RE_IDLE)|(state == RE_HELD));
-endmodule // ethrx_realign