diff options
Diffstat (limited to 'fpga/usrp2/gpmc/fifo_to_gpmc_sync.v')
-rw-r--r-- | fpga/usrp2/gpmc/fifo_to_gpmc_sync.v | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/fpga/usrp2/gpmc/fifo_to_gpmc_sync.v b/fpga/usrp2/gpmc/fifo_to_gpmc_sync.v deleted file mode 100644 index 9da9caf86..000000000 --- a/fpga/usrp2/gpmc/fifo_to_gpmc_sync.v +++ /dev/null @@ -1,43 +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/>. -// - - -// Assumes a GPMC cycle with GPMC clock, as in the timing diagrams -// If a packet bigger or smaller than we are told is sent, behavior is undefined. -// If dst_rdy_i is low when we get data, behavior is undefined and we signal bus error. -// If there is a bus error, we should be reset - -module fifo_to_gpmc_sync - (input arst, - input [17:0] data_i, input src_rdy_i, output dst_rdy_o, - input EM_CLK, output [15:0] EM_D, input EM_NCS, input EM_NOE, - output fifo_ready, - output reg bus_error); - - assign EM_D = data_i[15:0]; - wire read_access = ~EM_NCS & ~EM_NOE; - - assign dst_rdy_o = read_access; - - always @(posedge EM_CLK or posedge arst) - if(arst) - bus_error <= 0; - else if(dst_rdy_o & ~src_rdy_i) - bus_error <= 1; - - -endmodule // fifo_to_gpmc_sync |