FreeCalypso > hg > fc-sim-sniff
view fpga/sniffer-pps/spenh_ctrl.v @ 34:c2fc75655937
doc/PPS-catcher-FSM: it has been implemented
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 29 Aug 2023 22:58:26 +0000 |
parents | ab37fcb71744 |
children |
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/* * This module implements speed enhancement control based on signals * from the PPS catcher block. */ module spenh_ctrl (IntClk, SIM_RST_sync, Rx_strobe, Rx_char, pos_PPS_resp_PPS1, pos_PPS_resp_PCK, speed_enh_mode, speed_enh_mult); input IntClk; input SIM_RST_sync; input Rx_strobe; input [7:0] Rx_char; input pos_PPS_resp_PPS1, pos_PPS_resp_PCK; output reg speed_enh_mode; output reg [1:0] speed_enh_mult; always @(posedge IntClk) if (!SIM_RST_sync) speed_enh_mode <= 1'b0; else if (Rx_strobe && pos_PPS_resp_PCK) speed_enh_mode <= 1'b1; always @(posedge IntClk) if (Rx_strobe && pos_PPS_resp_PPS1) speed_enh_mult <= Rx_char[1:0]; endmodule