diff options
Diffstat (limited to 'fpga/usrp2/simple_gemac/rxmac_to_ll8.v')
-rw-r--r-- | fpga/usrp2/simple_gemac/rxmac_to_ll8.v | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/fpga/usrp2/simple_gemac/rxmac_to_ll8.v b/fpga/usrp2/simple_gemac/rxmac_to_ll8.v deleted file mode 100644 index 5acb08bb7..000000000 --- a/fpga/usrp2/simple_gemac/rxmac_to_ll8.v +++ /dev/null @@ -1,71 +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 rxmac_to_ll8 - (input clk, input reset, input clear, - input [7:0] rx_data, input rx_valid, input rx_error, input rx_ack, - output [7:0] ll_data, output ll_sof, output ll_eof, output ll_error, output ll_src_rdy, input ll_dst_rdy ); - - reg [2:0] xfer_state; - - localparam XFER_IDLE = 0; - localparam XFER_ACTIVE = 1; - localparam XFER_ERROR = 2; - localparam XFER_ERROR2 = 3; - localparam XFER_OVERRUN = 4; - localparam XFER_OVERRUN2 = 5; - - assign ll_data = rx_data; - assign ll_src_rdy = ((rx_valid & (xfer_state != XFER_OVERRUN2) ) - | (xfer_state == XFER_ERROR) - | (xfer_state == XFER_OVERRUN)); - assign ll_sof = ((xfer_state==XFER_IDLE)|(xfer_state==XFER_ERROR)|(xfer_state==XFER_OVERRUN)); - assign ll_eof = (rx_ack | (xfer_state==XFER_ERROR) | (xfer_state==XFER_OVERRUN)); - assign ll_error = (xfer_state == XFER_ERROR)|(xfer_state==XFER_OVERRUN); - - always @(posedge clk) - if(reset | clear) - xfer_state <= XFER_IDLE; - else - case(xfer_state) - XFER_IDLE : - if(rx_valid) - xfer_state <= XFER_ACTIVE; - XFER_ACTIVE : - if(rx_error) - xfer_state <= XFER_ERROR; - else if(~rx_valid) - xfer_state <= XFER_IDLE; - else if(~ll_dst_rdy) - xfer_state <= XFER_OVERRUN; - XFER_ERROR : - if(ll_dst_rdy) - xfer_state <= XFER_ERROR2; - XFER_ERROR2 : - if(~rx_error) - xfer_state <= XFER_IDLE; - XFER_OVERRUN : - if(ll_dst_rdy) - xfer_state <= XFER_OVERRUN2; - XFER_OVERRUN2 : - if(~rx_valid) - xfer_state <= XFER_IDLE; - endcase // case (xfer_state) - - -endmodule // rxmac_to_ll8 |