diff options
Diffstat (limited to 'usrp2/sdr_lib/tx_frontend.v')
| -rw-r--r-- | usrp2/sdr_lib/tx_frontend.v | 61 |
1 files changed, 38 insertions, 23 deletions
diff --git a/usrp2/sdr_lib/tx_frontend.v b/usrp2/sdr_lib/tx_frontend.v index d8525dd25..1e7f0bf31 100644 --- a/usrp2/sdr_lib/tx_frontend.v +++ b/usrp2/sdr_lib/tx_frontend.v @@ -1,7 +1,8 @@ module tx_frontend #(parameter BASE=0, - parameter WIDTH_OUT=16) + parameter WIDTH_OUT=16, + parameter IQCOMP_EN=0) (input clk, input rst, input set_stb, input [7:0] set_addr, input [31:0] set_data, input [23:0] tx_i, input [23:0] tx_q, input run, @@ -37,30 +38,44 @@ module tx_frontend (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr), .in(set_data),.out(mux_ctrl),.changed()); - // IQ Balance - MULT18X18S mult_mag_corr - (.P(corr_i), .A(tx_i[23:6]), .B(mag_corr), .C(clk), .CE(1), .R(rst) ); - - MULT18X18S mult_phase_corr - (.P(corr_q), .A(tx_i[23:6]), .B(phase_corr), .C(clk), .CE(1), .R(rst) ); - - add2_and_clip_reg #(.WIDTH(24)) add_clip_i - (.clk(clk), .rst(rst), - .in1(tx_i), .in2({{4{corr_i[35]}},corr_i[35:16]}), .strobe_in(1'b1), - .sum(i_bal), .strobe_out()); - - add2_and_clip_reg #(.WIDTH(24)) add_clip_q - (.clk(clk), .rst(rst), - .in1(tx_q), .in2({{4{corr_q[35]}},corr_q[35:16]}), .strobe_in(1'b1), - .sum(q_bal), .strobe_out()); + generate + if(IQCOMP_EN==1) + begin + // IQ Balance + MULT18X18S mult_mag_corr + (.P(corr_i), .A(tx_i[23:6]), .B(mag_corr), .C(clk), .CE(1), .R(rst) ); + + MULT18X18S mult_phase_corr + (.P(corr_q), .A(tx_i[23:6]), .B(phase_corr), .C(clk), .CE(1), .R(rst) ); + + add2_and_clip_reg #(.WIDTH(24)) add_clip_i + (.clk(clk), .rst(rst), + .in1(tx_i), .in2({{4{corr_i[35]}},corr_i[35:16]}), .strobe_in(1'b1), + .sum(i_bal), .strobe_out()); + + add2_and_clip_reg #(.WIDTH(24)) add_clip_q + (.clk(clk), .rst(rst), + .in1(tx_q), .in2({{4{corr_q[35]}},corr_q[35:16]}), .strobe_in(1'b1), + .sum(q_bal), .strobe_out()); - // DC Offset - add2_and_clip_reg #(.WIDTH(24)) add_dco_i - (.clk(clk), .rst(rst), .in1(i_dco), .in2(i_bal), .strobe_in(1'b1), .sum(i_ofs), .strobe_out()); + // DC Offset + add2_and_clip_reg #(.WIDTH(24)) add_dco_i + (.clk(clk), .rst(rst), .in1(i_dco), .in2(i_bal), .strobe_in(1'b1), .sum(i_ofs), .strobe_out()); + + add2_and_clip_reg #(.WIDTH(24)) add_dco_q + (.clk(clk), .rst(rst), .in1(q_dco), .in2(q_bal), .strobe_in(1'b1), .sum(q_ofs), .strobe_out()); + end // if (IQCOMP_EN==1) + else + begin + // DC Offset + add2_and_clip_reg #(.WIDTH(24)) add_dco_i + (.clk(clk), .rst(rst), .in1(i_dco), .in2(tx_i), .strobe_in(1'b1), .sum(i_ofs), .strobe_out()); + + add2_and_clip_reg #(.WIDTH(24)) add_dco_q + (.clk(clk), .rst(rst), .in1(q_dco), .in2(tx_q), .strobe_in(1'b1), .sum(q_ofs), .strobe_out()); + end // else: !if(IQCOMP_EN==1) + endgenerate - add2_and_clip_reg #(.WIDTH(24)) add_dco_q - (.clk(clk), .rst(rst), .in1(q_dco), .in2(q_bal), .strobe_in(1'b1), .sum(q_ofs), .strobe_out()); - // Rounding round_sd #(.WIDTH_IN(24),.WIDTH_OUT(WIDTH_OUT)) round_i (.clk(clk), .reset(rst), .in(i_ofs),.strobe_in(1'b1), .out(i_final), .strobe_out()); |