diff options
Diffstat (limited to 'sdr_lib')
| -rw-r--r-- | sdr_lib/dsp_core_rx.v | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/sdr_lib/dsp_core_rx.v b/sdr_lib/dsp_core_rx.v index 716182f65..ee713e4ac 100644 --- a/sdr_lib/dsp_core_rx.v +++ b/sdr_lib/dsp_core_rx.v @@ -7,6 +7,8 @@ module dsp_core_rx input [13:0] adc_a, input adc_ovf_a, input [13:0] adc_b, input adc_ovf_b, + input [15:0] io_rx, + output [31:0] sample, input run, output strobe, @@ -56,6 +58,11 @@ module dsp_core_rx (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr), .in(set_data),.out(muxctrl),.changed()); + wire [1:0] gpio_ena; + setting_reg #(.my_addr(`DSP_CORE_RX_BASE+9)) sr_9 + (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr), + .in(set_data),.out(gpio_ena),.changed()); + // The TVRX connects to what is called adc_b, thus A and B are // swapped throughout the design. // @@ -151,7 +158,21 @@ module dsp_core_rx round #(.bits_in(18),.bits_out(16)) round_iout (.in(i_hb2),.out(i_out)); round #(.bits_in(18),.bits_out(16)) round_qout (.in(q_hb2),.out(q_out)); - assign sample = {i_out,q_out}; + // Streaming GPIO + // + // io_rx[15] => I channel LSB if gpio_ena[0] high + // io_rx[14] => Q channel LSB if gpio_ena[1] high + + reg [31:0] sample_reg; + always @(posedge clk) + begin + sample_reg[31:17] <= i_out[15:1]; + sample_reg[15:1] <= q_out[15:1]; + sample_reg[16] <= gpio_ena[0] ? io_rx[15] : i_out[0]; + sample_reg[0] <= gpio_ena[1] ? io_rx[14] : q_out[0]; + end + + assign sample = sample_reg; assign strobe = strobe_hb2; assign debug = {enable_hb1, enable_hb2, run, strobe, strobe_cic, strobe_cic_d1, strobe_hb1, strobe_hb2}; |