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author | Josh Blum | 2010-03-16 18:22:10 -0700 |
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committer | Josh Blum | 2010-03-16 18:22:10 -0700 |
commit | d43d40813c1a8343a86abb231876a8b7c0e9f806 (patch) | |
tree | e919c7da99aca7918ca5533e899cd7c9bbbf76bd /usrp/fpga/sdr_lib/hb/halfband_interp.v | |
parent | 19d3c0cab37123f8bfd19fdfc576f44b6069300f (diff) | |
parent | ac422b700282e21956dbf7643ee2dfbeeebdaf45 (diff) | |
download | gnuradio-d43d40813c1a8343a86abb231876a8b7c0e9f806.tar.gz gnuradio-d43d40813c1a8343a86abb231876a8b7c0e9f806.tar.bz2 gnuradio-d43d40813c1a8343a86abb231876a8b7c0e9f806.zip |
Merge branch 'master' of http://gnuradio.org/git/gnuradio into uhd
Diffstat (limited to 'usrp/fpga/sdr_lib/hb/halfband_interp.v')
-rw-r--r-- | usrp/fpga/sdr_lib/hb/halfband_interp.v | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/usrp/fpga/sdr_lib/hb/halfband_interp.v b/usrp/fpga/sdr_lib/hb/halfband_interp.v deleted file mode 100644 index cdb11c1f6..000000000 --- a/usrp/fpga/sdr_lib/hb/halfband_interp.v +++ /dev/null @@ -1,121 +0,0 @@ - - -module halfband_interp - (input clock, input reset, input enable, - input strobe_in, input strobe_out, - input [15:0] signal_in_i, input [15:0] signal_in_q, - output reg [15:0] signal_out_i, output reg [15:0] signal_out_q, - output wire [12:0] debug); - - wire [15:0] coeff_ram_out; - wire [15:0] data_ram_out_i; - wire [15:0] data_ram_out_q; - - wire [3:0] data_rd_addr; - reg [3:0] data_wr_addr; - reg [2:0] coeff_rd_addr; - - wire filt_done; - - wire [15:0] mac_out_i; - wire [15:0] mac_out_q; - reg [15:0] delayed_middle_i, delayed_middle_q; - wire [7:0] shift = 8'd9; - - reg stb_out_happened; - - wire [15:0] data_ram_out_i_b; - - always @(posedge clock) - if(strobe_in) - stb_out_happened <= #1 1'b0; - else if(strobe_out) - stb_out_happened <= #1 1'b1; - -assign debug = {filt_done,data_rd_addr,data_wr_addr,coeff_rd_addr}; - - wire [15:0] signal_out_i = stb_out_happened ? mac_out_i : delayed_middle_i; - wire [15:0] signal_out_q = stb_out_happened ? mac_out_q : delayed_middle_q; - -/* always @(posedge clock) - if(reset) - begin - signal_out_i <= #1 16'd0; - signal_out_q <= #1 16'd0; - end - else if(strobe_in) - begin - signal_out_i <= #1 delayed_middle_i; // Multiply by 1 for middle coeff - signal_out_q <= #1 delayed_middle_q; - end - //else if(filt_done&stb_out_happened) - else if(stb_out_happened) - begin - signal_out_i <= #1 mac_out_i; - signal_out_q <= #1 mac_out_q; - end -*/ - - always @(posedge clock) - if(reset) - coeff_rd_addr <= #1 3'd0; - else if(coeff_rd_addr != 3'd0) - coeff_rd_addr <= #1 coeff_rd_addr + 3'd1; - else if(strobe_in) - coeff_rd_addr <= #1 3'd1; - - reg filt_done_d1; - always@(posedge clock) - filt_done_d1 <= #1 filt_done; - - always @(posedge clock) - if(reset) - data_wr_addr <= #1 4'd0; - //else if(strobe_in) - else if(filt_done & ~filt_done_d1) - data_wr_addr <= #1 data_wr_addr + 4'd1; - - always @(posedge clock) - if(coeff_rd_addr == 3'd7) - begin - delayed_middle_i <= #1 data_ram_out_i_b; - // delayed_middle_q <= #1 data_ram_out_q_b; - end - -// always @(posedge clock) -// if(reset) -// data_rd_addr <= #1 4'd0; -// else if(strobe_in) -// data_rd_addr <= #1 data_wr_addr + 4'd1; -// else if(!filt_done) -// data_rd_addr <= #1 data_rd_addr + 4'd1; -// else -// data_rd_addr <= #1 data_wr_addr; - - wire [3:0] data_rd_addr1 = data_wr_addr + {1'b0,coeff_rd_addr}; - wire [3:0] data_rd_addr2 = data_wr_addr + 15 - {1'b0,coeff_rd_addr}; -// always @(posedge clock) -// if(reset) -// filt_done <= #1 1'b1; -// else if(strobe_in) - // filt_done <= #1 1'b0; -// else if(coeff_rd_addr == 4'd0) -// filt_done <= #1 1'b1; - - assign filt_done = (coeff_rd_addr == 3'd0); - - coeff_ram coeff_ram ( .clock(clock),.rd_addr({1'b0,coeff_rd_addr}),.rd_data(coeff_ram_out) ); - - ram16_2sum data_ram_i ( .clock(clock),.write(strobe_in),.wr_addr(data_wr_addr),.wr_data(signal_in_i), - .rd_addr1(data_rd_addr1),.rd_addr2(data_rd_addr2),.rd_data(data_ram_out_i_b),.sum(data_ram_out_i)); - - ram16_2sum data_ram_q ( .clock(clock),.write(strobe_in),.wr_addr(data_wr_addr),.wr_data(signal_in_q), - .rd_addr1(data_rd_addr1),.rd_addr2(data_rd_addr2),.rd_data(data_ram_out_q)); - - mac mac_i (.clock(clock),.reset(reset),.enable(~filt_done),.clear(strobe_in), - .x(data_ram_out_i),.y(coeff_ram_out),.shift(shift),.z(mac_out_i) ); - - mac mac_q (.clock(clock),.reset(reset),.enable(~filt_done),.clear(strobe_in), - .x(data_ram_out_q),.y(coeff_ram_out),.shift(shift),.z(mac_out_q) ); - -endmodule // halfband_interp |