diff options
Diffstat (limited to 'fpga/usrp2/simple_gemac/ll8_to_txmac.v')
-rw-r--r-- | fpga/usrp2/simple_gemac/ll8_to_txmac.v | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/fpga/usrp2/simple_gemac/ll8_to_txmac.v b/fpga/usrp2/simple_gemac/ll8_to_txmac.v deleted file mode 100644 index ac81afa63..000000000 --- a/fpga/usrp2/simple_gemac/ll8_to_txmac.v +++ /dev/null @@ -1,60 +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_txmac - (input clk, input reset, input clear, - input [7:0] ll_data, input ll_sof, input ll_eof, input ll_src_rdy, output ll_dst_rdy, - output [7:0] tx_data, output tx_valid, output tx_error, input tx_ack ); - - reg [2:0] xfer_state; - - localparam XFER_IDLE = 0; - localparam XFER_ACTIVE = 1; - localparam XFER_WAIT1 = 2; - localparam XFER_UNDERRUN = 3; - localparam XFER_DROP = 4; - - always @(posedge clk) - if(reset | clear) - xfer_state <= XFER_IDLE; - else - case(xfer_state) - XFER_IDLE : - if(tx_ack) - xfer_state <= XFER_ACTIVE; - XFER_ACTIVE : - if(~ll_src_rdy) - xfer_state <= XFER_UNDERRUN; - else if(ll_eof) - xfer_state <= XFER_WAIT1; - XFER_WAIT1 : - xfer_state <= XFER_IDLE; - XFER_UNDERRUN : - xfer_state <= XFER_DROP; - XFER_DROP : - if(ll_eof) - xfer_state <= XFER_IDLE; - endcase // case (xfer_state) - - assign ll_dst_rdy = (xfer_state == XFER_ACTIVE) | tx_ack | (xfer_state == XFER_DROP); - assign tx_valid = (ll_src_rdy & (xfer_state == XFER_IDLE))|(xfer_state == XFER_ACTIVE); - assign tx_data = ll_data; - assign tx_error = (xfer_state == XFER_UNDERRUN); - -endmodule // ll8_to_txmac - |