diff options
Diffstat (limited to 'fpga/usrp3/lib/xge_interface/xge_handshake.v')
| -rw-r--r-- | fpga/usrp3/lib/xge_interface/xge_handshake.v | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/fpga/usrp3/lib/xge_interface/xge_handshake.v b/fpga/usrp3/lib/xge_interface/xge_handshake.v deleted file mode 100644 index 251099f57..000000000 --- a/fpga/usrp3/lib/xge_interface/xge_handshake.v +++ /dev/null @@ -1,60 +0,0 @@ -// -// Copyright 2013 Ettus Research LLC -// - -// -// -// Provide required handshake to Opencores XGE MAC to initiate Rx of one available packet -// -// - - -module xge_handshake - ( - input clk, - input reset, - output reg pkt_rx_ren, - input pkt_rx_avail, - input pkt_rx_eop - ); - - localparam IDLE=0; - localparam RX=1; - - reg state; - - - always @(posedge clk) - if (reset) begin - pkt_rx_ren <= 0; - state <= IDLE; - end else begin - case (state) - // - // Wait for pkt_rx_avail to be asserted, then assert pkt_rx_ren next cycle - // - IDLE: begin - if (pkt_rx_avail) begin - pkt_rx_ren <= 1; - state <= RX; - end else begin - pkt_rx_ren <= 0; - state <= IDLE; - end - end - // - // Keep pkt_rx_ren asserted until EOF received. - // - RX: begin - if (pkt_rx_eop) begin - pkt_rx_ren <= 0; - state <= IDLE; - end else begin - pkt_rx_ren <= 1; - state <= RX; - end - end - - endcase // case(state) - end // else: !if(reset) -endmodule // xge_handshake |