git.gag.com Git - debian/gnuradio/blob - usrp/fpga/toplevel/mrfm/mrfm_proc.v

   1
   2 `include "mrfm.vh"
   3 `include "../../../firmware/include/fpga_regs_common.v"
   4 `include "../../../firmware/include/fpga_regs_standard.v"
   5
   6 module mrfm_proc (input clock, input reset, input enable,
   7                   input [6:0] serial_addr, input [31:0] serial_data, input serial_strobe,
   8                   input [15:0] signal_in, output wire [15:0] signal_out, output wire sync_out,
   9                   output wire [15:0] i, output wire [15:0] q,
  10                   output wire [15:0] ip, output wire [15:0] qp,
  11                   output wire strobe_out, output wire [63:0] debugbus);
  12
  13    // Strobes
  14    wire        sample_strobe, strobe_0, strobe_1, strobe_2;
  15    assign      sample_strobe = 1'b1;
  16    wire [7:0]  rate_0, rate_1, rate_2;
  17
  18    setting_reg #(`FR_MRFM_DECIM) sr_decim(.clock(clock),.reset(reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out({rate_2,rate_1,rate_0}));
  19
  20    strobe_gen strobe_gen_0
  21      ( .clock(clock),.reset(reset),.enable(enable),
  22        .rate(rate_0),.strobe_in(sample_strobe),.strobe(strobe_0) );
  23    strobe_gen strobe_gen_1
  24      ( .clock(clock),.reset(reset),.enable(enable),
  25        .rate(rate_1),.strobe_in(strobe_0),.strobe(strobe_1) );
  26
  27    wire [31:0] phase;
  28
  29    assign      sync_out = phase[31];
  30    wire [15:0] i_decim_0, i_decim_1, i_decim_2;
  31    wire [15:0] q_decim_0, q_decim_1, q_decim_2;
  32
  33    wire [15:0] i_interp_0, i_interp_1, i_interp_2;
  34    wire [15:0] q_interp_0, q_interp_1, q_interp_2;
  35
  36    wire [15:0] i_filt, q_filt, i_comp, q_comp;
  37
  38    assign      ip=i_comp;
  39    assign      qp=q_comp;
  40
  41    phase_acc #(`FR_MRFM_FREQ,`FR_MRFM_PHASE,32) rx_phase_acc
  42      (.clk(clock),.reset(reset),.enable(enable),
  43       .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
  44       .strobe(sample_strobe),.phase(phase) );
  45
  46    cordic rx_cordic (.clock(clock),.reset(reset),.enable(enable),
  47                      .xi(signal_in),.yi(16'd0),.zi(phase[31:16]),
  48                      .xo(i_decim_0),.yo(q_decim_0),.zo() );
  49
  50    cic_decim cic_decim_i_0 (.clock(clock),.reset(reset),.enable(enable),
  51                             .rate(rate_0),.strobe_in(sample_strobe),.strobe_out(strobe_0),
  52                             .signal_in(i_decim_0),.signal_out(i_decim_1));
  53    cic_decim cic_decim_i_1 (.clock(clock),.reset(reset),.enable(enable),
  54                             .rate(rate_1),.strobe_in(strobe_0),.strobe_out(strobe_1),
  55                             .signal_in(i_decim_1),.signal_out(i));
  56
  57    cic_decim cic_decim_q_0 (.clock(clock),.reset(reset),.enable(enable),
  58                             .rate(rate_0),.strobe_in(sample_strobe),.strobe_out(strobe_0),
  59                             .signal_in(q_decim_0),.signal_out(q_decim_1));
  60    cic_decim cic_decim_q_1 (.clock(clock),.reset(reset),.enable(enable),
  61                             .rate(rate_1),.strobe_in(strobe_0),.strobe_out(strobe_1),
  62                             .signal_in(q_decim_1),.signal_out(q));
  63
  64    assign      strobe_out = strobe_1;
  65
  66    biquad_2stage iir_i (.clock(clock),.reset(reset),.strobe_in(strobe_1),
  67                         .serial_strobe(serial_strobe),.serial_addr(serial_addr),.serial_data(serial_data),
  68                         .sample_in(i),.sample_out(i_filt),.debugbus(debugbus));
  69
  70    biquad_2stage iir_q (.clock(clock),.reset(reset),.strobe_in(strobe_1),
  71                         .serial_strobe(serial_strobe),.serial_addr(serial_addr),.serial_data(serial_data),
  72                         .sample_in(q),.sample_out(q_filt),.debugbus());
  73
  74    mrfm_compensator compensator (.clock(clock),.reset(reset),.strobe_in(strobe_1),
  75                                  .serial_strobe(serial_strobe),.serial_addr(serial_addr),.serial_data(serial_data),
  76                                  .i_in(i_filt),.q_in(q_filt),.i_out(i_comp),.q_out(q_comp));
  77
  78    cic_interp cic_interp_i_0 (.clock(clock),.reset(reset),.enable(enable),
  79                             .rate(rate_1),.strobe_in(strobe_1),.strobe_out(strobe_0),
  80                             .signal_in(i_comp),.signal_out(i_interp_0));
  81    cic_interp cic_interp_i_1 (.clock(clock),.reset(reset),.enable(enable),
  82                             .rate(rate_0),.strobe_in(strobe_0),.strobe_out(sample_strobe),
  83                             .signal_in(i_interp_0),.signal_out(i_interp_1));
  84
  85    cic_interp cic_interp_q_0 (.clock(clock),.reset(reset),.enable(enable),
  86                             .rate(rate_1),.strobe_in(strobe_1),.strobe_out(strobe_0),
  87                             .signal_in(q_comp),.signal_out(q_interp_0));
  88    cic_interp cic_interp_q_1 (.clock(clock),.reset(reset),.enable(enable),
  89                             .rate(rate_0),.strobe_in(strobe_0),.strobe_out(sample_strobe),
  90                             .signal_in(q_interp_0),.signal_out(q_interp_1));
  91
  92    cordic tx_cordic (.clock(clock),.reset(reset),.enable(enable),
  93                      .xi(i_interp_1),.yi(q_interp_1),.zi(-phase[31:16]),
  94                      .xo(signal_out),.yo(),.zo() );
  95
  96 endmodule // mrfm_proc