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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/ll8_to_fifo36.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/ll8_to_fifo36.v')
-rw-r--r-- | fpga/usrp2/fifo/ll8_to_fifo36.v | 114 |
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 |