3 // USRP - Universal Software Radio Peripheral
5 // Copyright (C) 2003,2004 Matt Ettus
6 // Copyright 2007 Free Software Foundation, Inc.
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA
26 `include "../../../firmware/include/fpga_regs_common.v"
27 `include "../../../firmware/include/fpga_regs_standard.v"
29 module usrp_inband_usb
30 (output MYSTERY_SIGNAL,
41 input wire [11:0] rx_a_a,
42 input wire [11:0] rx_b_a,
43 input wire [11:0] rx_a_b,
44 input wire [11:0] rx_b_b,
46 output wire [13:0] tx_a,
47 output wire [13:0] tx_b,
54 input wire [2:0] usbctl,
55 output wire [1:0] usbrdy,
56 inout [15:0] usbdata, // NB Careful, inout
58 // These are the general purpose i/o's that go to the daughterboard slots
59 inout wire [15:0] io_tx_a,
60 inout wire [15:0] io_tx_b,
61 inout wire [15:0] io_rx_a,
62 inout wire [15:0] io_rx_b
64 wire [15:0] debugdata,debugctrl;
65 assign MYSTERY_SIGNAL = 1'b0;
73 wire have_space, have_pkt_rdy;
74 assign usbrdy[0] = have_space;
75 assign usbrdy[1] = have_pkt_rdy;
78 wire clear_status = FX2_1;
79 assign FX2_2 = rx_overrun;
80 assign FX2_3 = (tx_underrun == 0);
82 wire [15:0] usbdata_out;
84 wire [3:0] dac0mux,dac1mux,dac2mux,dac3mux;
87 wire [3:0] rx_numchan;
88 wire [2:0] tx_numchan;
90 wire [7:0] interp_rate, decim_rate;
91 wire [15:0] tx_debugbus, rx_debugbus;
93 wire enable_tx, enable_rx;
94 wire tx_dsp_reset, rx_dsp_reset, tx_bus_reset, rx_bus_reset;
97 // Tri-state bus macro
98 bustri bustri( .data(usbdata_out),.enabledt(OE),.tridata(usbdata) );
100 assign clk64 = master_clk;
102 wire [15:0] ch0tx,ch1tx,ch2tx,ch3tx; //,ch4tx,ch5tx,ch6tx,ch7tx;
103 wire [15:0] ch0rx,ch1rx,ch2rx,ch3rx,ch4rx,ch5rx,ch6rx,ch7rx;
106 wire [15:0] i_out_0,i_out_1,q_out_0,q_out_1;
107 wire [15:0] bb_tx_i0,bb_tx_q0,bb_tx_i1,bb_tx_q1; // bb_tx_i2,bb_tx_q2,bb_tx_i3,bb_tx_q3;
109 wire strobe_interp, tx_sample_strobe;
113 wire [6:0] serial_addr;
114 wire [31:0] serial_data;
116 reg [15:0] debug_counter;
117 reg [15:0] loopback_i_0,loopback_q_0;
120 //Connection RX inband <-> TX inband
122 wire [15:0] rx_databus;
125 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
128 assign bb_tx_i0 = ch0tx;
129 assign bb_tx_q0 = ch1tx;
130 assign bb_tx_i1 = ch2tx;
131 assign bb_tx_q1 = ch3tx;
134 wire [31:0] reg_data_out;
135 wire [31:0] reg_data_in;
136 wire [1:0] reg_io_enable;
137 wire [31:0] rssi_threshhold;
138 wire [31:0] rssi_wait;
140 register_io register_control
141 (.clk(clk64),.reset(1'b0),.enable(reg_io_enable),.addr(reg_addr),.datain(reg_data_in),
142 .dataout(reg_data_out),.rssi_0(rssi_0), .rssi_1(rssi_1), .rssi_2(rssi_2),
143 .rssi_3(rssi_3), .threshhold(rssi_threshhold), .rssi_wait(rssi_wait));
144 wire [1:0] tx_overrun;
145 wire [1:0] tx_underrun;
148 tx_buffer_inband tx_buffer
149 ( .usbclk(usbclk),.bus_reset(tx_bus_reset),.reset(tx_dsp_reset),
150 .usbdata(usbdata),.WR(WR),.have_space(have_space),
151 .tx_underrun(tx_underrun),.channels({tx_numchan,1'b0}),
152 .tx_i_0(ch0tx),.tx_q_0(ch1tx),
153 .tx_i_1(ch2tx),.tx_q_1(ch3tx),
156 .txclk(clk64),.txstrobe(strobe_interp),
157 .clear_status(clear_status),
160 .rx_databus(rx_databus),
161 .rx_WR_done(rx_WR_done),
162 .rx_WR_enabled(rx_WR_enabled),
164 .reg_data_out(reg_data_out),
165 .reg_data_in(reg_data_in),
166 .reg_io_enable(reg_io_enable),
168 .rssi_0(rssi_0), .rssi_1(rssi_1), .rssi_2(rssi_2),
169 .rssi_3(rssi_3), .threshhold(rssi_threshhold), .rssi_wait(rssi_wait));
172 ( .usbclk(usbclk),.bus_reset(tx_bus_reset),.reset(tx_dsp_reset),
173 .usbdata(usbdata),.WR(WR),.have_space(have_space),.tx_underrun(tx_underrun),
174 .channels({tx_numchan,1'b0}),
175 .tx_i_0(ch0tx),.tx_q_0(ch1tx),
176 .tx_i_1(ch2tx),.tx_q_1(ch3tx),
179 .txclk(clk64),.txstrobe(strobe_interp),
180 .clear_status(clear_status),
181 .tx_empty(tx_empty));
186 ( .clock(clk64),.reset(tx_dsp_reset),.enable(enable_tx),
187 .interp_rate(interp_rate),.sample_strobe(tx_sample_strobe),
188 .interpolator_strobe(strobe_interp),.freq(),
189 .i_in(bb_tx_i0),.q_in(bb_tx_q0),.i_out(i_out_0),.q_out(q_out_0) );
191 assign i_out_0=16'd0;
192 assign q_out_0=16'd0;
197 ( .clock(clk64),.reset(tx_dsp_reset),.enable(enable_tx),
198 .interp_rate(interp_rate),.sample_strobe(tx_sample_strobe),
199 .interpolator_strobe(strobe_interp),.freq(),
200 .i_in(bb_tx_i1),.q_in(bb_tx_q1),.i_out(i_out_1),.q_out(q_out_1) );
202 assign i_out_1=16'd0;
203 assign q_out_1=16'd0;
206 setting_reg #(`FR_TX_MUX)
207 sr_txmux(.clock(clk64),.reset(tx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),
208 .out({dac3mux,dac2mux,dac1mux,dac0mux,tx_realsignals,tx_numchan}));
210 wire [15:0] tx_a_a = dac0mux[3] ? (dac0mux[1] ? (dac0mux[0] ? q_out_1 : i_out_1) : (dac0mux[0] ? q_out_0 : i_out_0)) : 16'b0;
211 wire [15:0] tx_b_a = dac1mux[3] ? (dac1mux[1] ? (dac1mux[0] ? q_out_1 : i_out_1) : (dac1mux[0] ? q_out_0 : i_out_0)) : 16'b0;
212 wire [15:0] tx_a_b = dac2mux[3] ? (dac2mux[1] ? (dac2mux[0] ? q_out_1 : i_out_1) : (dac2mux[0] ? q_out_0 : i_out_0)) : 16'b0;
213 wire [15:0] tx_b_b = dac3mux[3] ? (dac3mux[1] ? (dac3mux[0] ? q_out_1 : i_out_1) : (dac3mux[0] ? q_out_0 : i_out_0)) : 16'b0;
215 wire txsync = tx_sample_strobe;
216 assign TXSYNC_A = txsync;
217 assign TXSYNC_B = txsync;
219 assign tx_a = txsync ? tx_b_a[15:2] : tx_a_a[15:2];
220 assign tx_b = txsync ? tx_b_b[15:2] : tx_a_b[15:2];
221 `endif // `ifdef TX_ON
223 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
226 wire rx_sample_strobe,strobe_decim,hb_strobe;
227 wire [15:0] bb_rx_i0,bb_rx_q0,bb_rx_i1,bb_rx_q1,
228 bb_rx_i2,bb_rx_q2,bb_rx_i3,bb_rx_q3;
230 wire loopback = settings[0];
231 wire counter = settings[1];
233 always @(posedge clk64)
235 debug_counter <= #1 16'd0;
237 debug_counter <= #1 16'd0;
239 debug_counter <=#1 debug_counter + 16'd2;
241 always @(posedge clk64)
244 loopback_i_0 <= #1 ch0tx;
245 loopback_q_0 <= #1 ch1tx;
248 assign ch0rx = counter ? debug_counter : loopback ? loopback_i_0 : bb_rx_i0;
249 assign ch1rx = counter ? debug_counter + 16'd1 : loopback ? loopback_q_0 : bb_rx_q0;
250 assign ch2rx = bb_rx_i1;
251 assign ch3rx = bb_rx_q1;
252 assign ch4rx = bb_rx_i2;
253 assign ch5rx = bb_rx_q2;
254 assign ch6rx = bb_rx_i3;
255 assign ch7rx = bb_rx_q3;
257 wire [15:0] ddc0_in_i,ddc0_in_q,ddc1_in_i,ddc1_in_q,ddc2_in_i,ddc2_in_q,ddc3_in_i,ddc3_in_q;
258 wire [31:0] rssi_0,rssi_1,rssi_2,rssi_3;
259 adc_interface adc_interface(.clock(clk64),.reset(rx_dsp_reset),.enable(1'b1),
260 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
261 .rx_a_a(rx_a_a),.rx_b_a(rx_b_a),.rx_a_b(rx_a_b),.rx_b_b(rx_b_b),
262 .rssi_0(rssi_0),.rssi_1(rssi_1),.rssi_2(rssi_2),.rssi_3(rssi_3),
263 .ddc0_in_i(ddc0_in_i),.ddc0_in_q(ddc0_in_q),
264 .ddc1_in_i(ddc1_in_i),.ddc1_in_q(ddc1_in_q),
265 .ddc2_in_i(ddc2_in_i),.ddc2_in_q(ddc2_in_q),
266 .ddc3_in_i(ddc3_in_i),.ddc3_in_q(ddc3_in_q),.rx_numchan(rx_numchan));
268 rx_buffer_inband rx_buffer
269 ( .usbclk(usbclk),.bus_reset(rx_bus_reset),.reset(rx_dsp_reset),
270 .reset_regs(rx_dsp_reset),
271 .usbdata(usbdata_out),.RD(RD),.have_pkt_rdy(have_pkt_rdy),.rx_overrun(rx_overrun),
272 .channels(rx_numchan),
273 .ch_0(ch0rx),.ch_1(ch1rx),
274 .ch_2(ch2rx),.ch_3(ch3rx),
275 .ch_4(ch4rx),.ch_5(ch5rx),
276 .ch_6(ch6rx),.ch_7(ch7rx),
277 .rxclk(clk64),.rxstrobe(hb_strobe),
278 .clear_status(clear_status),
279 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
281 .rx_databus(rx_databus),
282 .rx_WR_done(rx_WR_done),
283 .rx_WR_enabled(rx_WR_enabled),
284 .debugbus(tx_debugbus),
285 .rssi_0(rssi_0), .rssi_1(rssi_1), .rssi_2(rssi_2), .rssi_3(rssi_3),
286 .tx_overrun(tx_overrun), .tx_underrun(tx_underrun));
289 ( .usbclk(usbclk),.bus_reset(rx_bus_reset),.reset(rx_dsp_reset),
290 .reset_regs(rx_dsp_reset),
291 .usbdata(usbdata_out),.RD(RD),.have_pkt_rdy(have_pkt_rdy),.rx_overrun(rx_overrun),
292 .channels(rx_numchan),
293 .ch_0(ch0rx),.ch_1(ch1rx),
294 .ch_2(ch2rx),.ch_3(ch3rx),
295 .ch_4(ch4rx),.ch_5(ch5rx),
296 .ch_6(ch6rx),.ch_7(ch7rx),
297 .rxclk(clk64),.rxstrobe(hb_strobe),
298 .clear_status(clear_status),
299 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe));
303 rx_chain #(`FR_RX_FREQ_0,`FR_RX_PHASE_0) rx_chain_0
304 ( .clock(clk64),.reset(1'b0),.enable(enable_rx),
305 .decim_rate(decim_rate),.sample_strobe(rx_sample_strobe),.decimator_strobe(strobe_decim),.hb_strobe(hb_strobe),
306 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
307 .i_in(ddc0_in_i),.q_in(ddc0_in_q),.i_out(bb_rx_i0),.q_out(bb_rx_q0),.debugdata(debugdata),.debugctrl(debugctrl));
309 assign bb_rx_i0=16'd0;
310 assign bb_rx_q0=16'd0;
314 rx_chain #(`FR_RX_FREQ_1,`FR_RX_PHASE_1) rx_chain_1
315 ( .clock(clk64),.reset(1'b0),.enable(enable_rx),
316 .decim_rate(decim_rate),.sample_strobe(rx_sample_strobe),.decimator_strobe(strobe_decim),.hb_strobe(),
317 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
318 .i_in(ddc1_in_i),.q_in(ddc1_in_q),.i_out(bb_rx_i1),.q_out(bb_rx_q1));
320 assign bb_rx_i1=16'd0;
321 assign bb_rx_q1=16'd0;
325 rx_chain #(`FR_RX_FREQ_2,`FR_RX_PHASE_2) rx_chain_2
326 ( .clock(clk64),.reset(1'b0),.enable(enable_rx),
327 .decim_rate(decim_rate),.sample_strobe(rx_sample_strobe),.decimator_strobe(strobe_decim),.hb_strobe(),
328 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
329 .i_in(ddc2_in_i),.q_in(ddc2_in_q),.i_out(bb_rx_i2),.q_out(bb_rx_q2));
331 assign bb_rx_i2=16'd0;
332 assign bb_rx_q2=16'd0;
336 rx_chain #(`FR_RX_FREQ_3,`FR_RX_PHASE_3) rx_chain_3
337 ( .clock(clk64),.reset(1'b0),.enable(enable_rx),
338 .decim_rate(decim_rate),.sample_strobe(rx_sample_strobe),.decimator_strobe(strobe_decim),.hb_strobe(),
339 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
340 .i_in(ddc3_in_i),.q_in(ddc3_in_q),.i_out(bb_rx_i3),.q_out(bb_rx_q3));
342 assign bb_rx_i3=16'd0;
343 assign bb_rx_q3=16'd0;
346 `endif // `ifdef RX_ON
348 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
351 wire [31:0] capabilities;
352 assign capabilities[7] = `TX_CAP_HB;
353 assign capabilities[6:4] = `TX_CAP_NCHAN;
354 assign capabilities[3] = `RX_CAP_HB;
355 assign capabilities[2:0] = `RX_CAP_NCHAN;
358 ( .master_clk(clk64),.serial_clock(SCLK),.serial_data_in(SDI),
359 .enable(SEN_FPGA),.reset(1'b0),.serial_data_out(SDO),
360 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
361 .readback_0({io_rx_a,io_tx_a}),.readback_1({io_rx_b,io_tx_b}),.readback_2(capabilities),.readback_3(32'hf0f0931a),
362 .readback_4(rssi_0),.readback_5(rssi_1),.readback_6(rssi_2),.readback_7(rssi_3)
365 wire [15:0] reg_0,reg_1,reg_2,reg_3;
366 master_control master_control
367 ( .master_clk(clk64),.usbclk(usbclk),
368 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
369 .tx_bus_reset(tx_bus_reset),.rx_bus_reset(rx_bus_reset),
370 .tx_dsp_reset(tx_dsp_reset),.rx_dsp_reset(rx_dsp_reset),
371 .enable_tx(enable_tx),.enable_rx(enable_rx),
372 .interp_rate(interp_rate),.decim_rate(decim_rate),
373 .tx_sample_strobe(tx_sample_strobe),.strobe_interp(strobe_interp),
374 .rx_sample_strobe(rx_sample_strobe),.strobe_decim(strobe_decim),
376 //.debug_0(rx_a_a),.debug_1(ddc0_in_i),
377 .debug_0(tx_debugbus),.debug_1(tx_debugbus),
378 .debug_2({rx_sample_strobe,strobe_decim,serial_strobe,serial_addr}),.debug_3({rx_dsp_reset,tx_dsp_reset,rx_bus_reset,tx_bus_reset,enable_rx,(tx_underrun == 0),rx_overrun,decim_rate}),
379 .reg_0(reg_0),.reg_1(reg_1),.reg_2(reg_2),.reg_3(reg_3) );
382 (.io_0(io_tx_a),.io_1(io_rx_a),.io_2(io_tx_b),.io_3(io_rx_b),
383 .reg_0(reg_0),.reg_1(reg_1),.reg_2(reg_2),.reg_3(reg_3),
384 .clock(clk64),.rx_reset(rx_dsp_reset),.tx_reset(tx_dsp_reset),
385 .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe));
387 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
389 setting_reg #(`FR_MODE) sr_misc(.clock(clk64),.reset(rx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(settings));
391 endmodule // usrp_inband_usb