aboutsummaryrefslogtreecommitdiffstats
path: root/fpga/usrp2/fifo/ll8_to_fifo36.v
diff options
context:
space:
mode:
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/ll8_to_fifo36.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
downloaduhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.gz
uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.bz2
uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.zip
Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/fifo/ll8_to_fifo36.v')
-rw-r--r--fpga/usrp2/fifo/ll8_to_fifo36.v114
1 files changed, 0 insertions, 114 deletions
diff --git a/fpga/usrp2/fifo/ll8_to_fifo36.v b/fpga/usrp2/fifo/ll8_to_fifo36.v
deleted file mode 100644
index b26f745d2..000000000
--- a/fpga/usrp2/fifo/ll8_to_fifo36.v
+++ /dev/null
@@ -1,114 +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/>.
-//
-
-
-module ll8_to_fifo36
- (input clk, input reset, input clear,
- input [7:0] ll_data,
- input ll_sof_n,
- input ll_eof_n,
- input ll_src_rdy_n,
- output ll_dst_rdy_n,
-
- output [35:0] f36_data,
- output f36_src_rdy_o,
- input f36_dst_rdy_i );
-
- wire f36_write = f36_src_rdy_o & f36_dst_rdy_i;
-
- // Why anybody would use active low in an FPGA is beyond me...
- wire ll_sof = ~ll_sof_n;
- wire ll_eof = ~ll_eof_n;
- wire ll_src_rdy = ~ll_src_rdy_n;
- wire ll_dst_rdy;
- assign ll_dst_rdy_n = ~ll_dst_rdy;
-
- reg f36_sof, f36_eof;
- reg [1:0] f36_occ;
-
-
- reg [2:0] state;
- reg [7:0] dat0, dat1, dat2, dat3;
-
- always @(posedge clk)
- if(ll_src_rdy & ((state==0)|f36_write))
- f36_sof <= ll_sof;
-
- always @(posedge clk)
- if(ll_src_rdy & ((state !=4)|f36_write))
- f36_eof <= ll_eof;
-
- always @(posedge clk)
- if(ll_eof)
- f36_occ <= state[1:0] + 1;
- else
- f36_occ <= 0;
-
- always @(posedge clk)
- if(reset)
- state <= 0;
- else
- if(ll_src_rdy)
- case(state)
- 0 :
- if(ll_eof)
- state <= 4;
- else
- state <= 1;
- 1 :
- if(ll_eof)
- state <= 4;
- else
- state <= 2;
- 2 :
- if(ll_eof)
- state <= 4;
- else
- state <= 3;
- 3 : state <= 4;
- 4 :
- if(f36_dst_rdy_i)
- if(ll_eof)
- state <= 4;
- else
- state <= 1;
- endcase // case(state)
- else
- if(f36_write)
- state <= 0;
-
- always @(posedge clk)
- if(ll_src_rdy & (state==3))
- dat3 <= ll_data;
-
- always @(posedge clk)
- if(ll_src_rdy & (state==2))
- dat2 <= ll_data;
-
- always @(posedge clk)
- if(ll_src_rdy & (state==1))
- dat1 <= ll_data;
-
- always @(posedge clk)
- if(ll_src_rdy & ((state==0) | f36_write))
- dat0 <= ll_data;
-
- assign ll_dst_rdy = f36_dst_rdy_i | (state != 4);
- assign f36_data = {f36_occ,f36_eof,f36_sof,dat0,dat1,dat2,dat3}; // FIXME endianess
- assign f36_src_rdy_o = (state == 4);
-
-endmodule // ll8_to_fifo36