diff options
Diffstat (limited to 'fpga/usrp1/toplevel/mrfm/mrfm_proc.v')
| -rw-r--r-- | fpga/usrp1/toplevel/mrfm/mrfm_proc.v | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/fpga/usrp1/toplevel/mrfm/mrfm_proc.v b/fpga/usrp1/toplevel/mrfm/mrfm_proc.v new file mode 100644 index 000000000..7da934a6e --- /dev/null +++ b/fpga/usrp1/toplevel/mrfm/mrfm_proc.v @@ -0,0 +1,96 @@ + +`include "mrfm.vh" +`include "../../common/fpga_regs_common.v" +`include "../../common/fpga_regs_standard.v" + +module mrfm_proc (input clock, input reset, input enable, + input [6:0] serial_addr, input [31:0] serial_data, input serial_strobe, + input [15:0] signal_in, output wire [15:0] signal_out, output wire sync_out, + output wire [15:0] i, output wire [15:0] q, + output wire [15:0] ip, output wire [15:0] qp, + output wire strobe_out, output wire [63:0] debugbus); + + // Strobes + wire sample_strobe, strobe_0, strobe_1, strobe_2; + assign sample_strobe = 1'b1; + wire [7:0] rate_0, rate_1, rate_2; + + 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})); + + strobe_gen strobe_gen_0 + ( .clock(clock),.reset(reset),.enable(enable), + .rate(rate_0),.strobe_in(sample_strobe),.strobe(strobe_0) ); + strobe_gen strobe_gen_1 + ( .clock(clock),.reset(reset),.enable(enable), + .rate(rate_1),.strobe_in(strobe_0),.strobe(strobe_1) ); + + wire [31:0] phase; + + assign sync_out = phase[31]; + wire [15:0] i_decim_0, i_decim_1, i_decim_2; + wire [15:0] q_decim_0, q_decim_1, q_decim_2; + + wire [15:0] i_interp_0, i_interp_1, i_interp_2; + wire [15:0] q_interp_0, q_interp_1, q_interp_2; + + wire [15:0] i_filt, q_filt, i_comp, q_comp; + + assign ip=i_comp; + assign qp=q_comp; + + phase_acc #(`FR_MRFM_FREQ,`FR_MRFM_PHASE,32) rx_phase_acc + (.clk(clock),.reset(reset),.enable(enable), + .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe), + .strobe(sample_strobe),.phase(phase) ); + + cordic rx_cordic (.clock(clock),.reset(reset),.enable(enable), + .xi(signal_in),.yi(16'd0),.zi(phase[31:16]), + .xo(i_decim_0),.yo(q_decim_0),.zo() ); + + cic_decim cic_decim_i_0 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_0),.strobe_in(sample_strobe),.strobe_out(strobe_0), + .signal_in(i_decim_0),.signal_out(i_decim_1)); + cic_decim cic_decim_i_1 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_1),.strobe_in(strobe_0),.strobe_out(strobe_1), + .signal_in(i_decim_1),.signal_out(i)); + + cic_decim cic_decim_q_0 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_0),.strobe_in(sample_strobe),.strobe_out(strobe_0), + .signal_in(q_decim_0),.signal_out(q_decim_1)); + cic_decim cic_decim_q_1 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_1),.strobe_in(strobe_0),.strobe_out(strobe_1), + .signal_in(q_decim_1),.signal_out(q)); + + assign strobe_out = strobe_1; + + biquad_2stage iir_i (.clock(clock),.reset(reset),.strobe_in(strobe_1), + .serial_strobe(serial_strobe),.serial_addr(serial_addr),.serial_data(serial_data), + .sample_in(i),.sample_out(i_filt),.debugbus(debugbus)); + + biquad_2stage iir_q (.clock(clock),.reset(reset),.strobe_in(strobe_1), + .serial_strobe(serial_strobe),.serial_addr(serial_addr),.serial_data(serial_data), + .sample_in(q),.sample_out(q_filt),.debugbus()); + + mrfm_compensator compensator (.clock(clock),.reset(reset),.strobe_in(strobe_1), + .serial_strobe(serial_strobe),.serial_addr(serial_addr),.serial_data(serial_data), + .i_in(i_filt),.q_in(q_filt),.i_out(i_comp),.q_out(q_comp)); + + cic_interp cic_interp_i_0 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_1),.strobe_in(strobe_1),.strobe_out(strobe_0), + .signal_in(i_comp),.signal_out(i_interp_0)); + cic_interp cic_interp_i_1 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_0),.strobe_in(strobe_0),.strobe_out(sample_strobe), + .signal_in(i_interp_0),.signal_out(i_interp_1)); + + cic_interp cic_interp_q_0 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_1),.strobe_in(strobe_1),.strobe_out(strobe_0), + .signal_in(q_comp),.signal_out(q_interp_0)); + cic_interp cic_interp_q_1 (.clock(clock),.reset(reset),.enable(enable), + .rate(rate_0),.strobe_in(strobe_0),.strobe_out(sample_strobe), + .signal_in(q_interp_0),.signal_out(q_interp_1)); + + cordic tx_cordic (.clock(clock),.reset(reset),.enable(enable), + .xi(i_interp_1),.yi(q_interp_1),.zi(-phase[31:16]), + .xo(signal_out),.yo(),.zo() ); + +endmodule // mrfm_proc |