diff options
Diffstat (limited to 'usrp2')
| -rw-r--r-- | usrp2/sdr_lib/dsp_core_rx.v | 12 | ||||
| -rw-r--r-- | usrp2/sdr_lib/rx_frontend.v | 8 |
2 files changed, 12 insertions, 8 deletions
diff --git a/usrp2/sdr_lib/dsp_core_rx.v b/usrp2/sdr_lib/dsp_core_rx.v index ac8fbc6eb..e5cb95fd9 100644 --- a/usrp2/sdr_lib/dsp_core_rx.v +++ b/usrp2/sdr_lib/dsp_core_rx.v @@ -21,8 +21,8 @@ module dsp_core_rx (input clk, input rst, input set_stb, input [7:0] set_addr, input [31:0] set_data, - input [17:0] adc_i, input adc_ovf_i, - input [17:0] adc_q, input adc_ovf_q, + input [23:0] adc_i, input adc_ovf_i, + input [23:0] adc_q, input adc_ovf_q, output [31:0] sample, input run, @@ -46,7 +46,7 @@ module dsp_core_rx wire enable_hb1, enable_hb2; wire [7:0] cic_decim_rate; - reg [17:0] adc_i_mux, adc_q_mux; + reg [23:0] adc_i_mux, adc_q_mux; wire realmode; wire swap_iq; @@ -70,12 +70,12 @@ module dsp_core_rx if(swap_iq) begin adc_i_mux <= adc_q; - adc_q_mux <= realmode ? 18'd0 : adc_i; + adc_q_mux <= realmode ? 24'd0 : adc_i; end else begin adc_i_mux <= adc_i; - adc_q_mux <= realmode ? 18'd0 : adc_q; + adc_q_mux <= realmode ? 24'd0 : adc_q; end always @(posedge clk) @@ -88,7 +88,7 @@ module dsp_core_rx cordic_z24 #(.bitwidth(25)) cordic(.clock(clk), .reset(rst), .enable(run), - .xi({adc_i_mux[17],adc_i_mux,6'd0}),. yi({adc_q_mux[17],adc_q_mux,6'd0}), .zi(phase[31:8]), + .xi({adc_i_mux[23],adc_i_mux}),. yi({adc_q_mux[23],adc_q_mux}), .zi(phase[31:8]), .xo(i_cordic),.yo(q_cordic),.zo() ); clip_reg #(.bits_in(25), .bits_out(24)) clip_i (.clk(clk), .in(i_cordic), .out(i_cordic_clip)); diff --git a/usrp2/sdr_lib/rx_frontend.v b/usrp2/sdr_lib/rx_frontend.v index a95110240..04b14787e 100644 --- a/usrp2/sdr_lib/rx_frontend.v +++ b/usrp2/sdr_lib/rx_frontend.v @@ -7,7 +7,7 @@ module rx_frontend input [15:0] adc_a, input adc_ovf_a, input [15:0] adc_b, input adc_ovf_b, - output [17:0] i_out, output [17:0] q_out, + output [23:0] i_out, output [23:0] q_out, input run, output [31:0] debug ); @@ -60,10 +60,14 @@ module rx_frontend .in1({adc_q_ofs,6'd0}), .in2({{4{corr_q[35]}},corr_q[35:16]}), .strobe_in(1'b1), .sum(q_final), .strobe_out()); + assign i_out = i_final; + assign q_out = q_final; + + /* round_sd #(.WIDTH_IN(24),.WIDTH_OUT(18)) round_i (.clk(clk), .reset(rst), .in(i_final), .strobe_in(1'b1), .out(i_out), .strobe_out()); round_sd #(.WIDTH_IN(24),.WIDTH_OUT(18)) round_q (.clk(clk), .reset(rst), .in(q_final), .strobe_in(1'b1), .out(q_out), .strobe_out()); - + */ endmodule // rx_frontend |