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-rw-r--r--fpga/usrp2/gpmc/new_write.v82
1 files changed, 0 insertions, 82 deletions
diff --git a/fpga/usrp2/gpmc/new_write.v b/fpga/usrp2/gpmc/new_write.v
deleted file mode 100644
index df0ce19db..000000000
--- a/fpga/usrp2/gpmc/new_write.v
+++ /dev/null
@@ -1,82 +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 new_write
- (input [15:0] EM_D, input [1:0] EM_NBE, input EM_NCS, input EM_NWE,
-
- input bus_clk,
- input fifo_clk, input fifo_rst, input clear,
- output [17:0] data_o, output src_rdy_o, input dst_rdy_i,
-
- input [15:0] frame_len, output reg fifo_ready,
- output reg bus_error );
-
- wire [15:0] fifo_space;
- reg [15:0] counter;
-
- // Synchronize the async control signals
- reg [1:0] cs_del, we_del;
- reg [15:0] data_del[0:1];
-
- always @(posedge bus_clk)
- if(fifo_rst)
- begin
- cs_del <= 2'b11;
- we_del <= 2'b11;
- end
- else
- begin
- cs_del <= { cs_del[0], EM_NCS };
- we_del <= { we_del[0], EM_NWE };
- data_del[1] <= data_del[0];
- data_del[0] <= EM_D;
- end
-
- wire first_write = (counter == 0);
- wire last_write = ((counter+1) == frame_len);
-
- wire [17:0] data_int = {last_write,first_write,data_del[1]};
- wire src_rdy_int = (~cs_del[1] & ~we_del[1] & we_del[0]); // rising edge
- wire dst_rdy_int;
-
- always @(posedge bus_clk)
- if(fifo_rst | clear)
- counter <= 0;
- else if(src_rdy_int)
- if(last_write)
- counter <= 0;
- else
- counter <= counter + 1;
-
- always @(posedge bus_clk)
- if(fifo_rst | clear)
- fifo_ready <= 0;
- else
- fifo_ready <= /* first_write & */ (fifo_space > 16'd1023);
-
- always @(posedge bus_clk)
- if(fifo_rst | clear)
- bus_error <= 0;
- else if(src_rdy_int & ~dst_rdy_int)
- bus_error <= 1;
-
- fifo_2clock_cascade #(.WIDTH(18), .SIZE(10)) tx_fifo
- (.wclk(bus_clk), .datain(data_int), .src_rdy_i(src_rdy_int), .dst_rdy_o(dst_rdy_int), .space(fifo_space),
- .rclk(fifo_clk), .dataout(data_o), .src_rdy_o(src_rdy_o), .dst_rdy_i(dst_rdy_i), .occupied(), .arst(fifo_rst));
-
-endmodule // new_write