3 module rx_dcoffset (input clock, input enable, input reset,
4 input signed [15:0] adc_in, output signed [15:0] adc_out,
5 input wire [6:0] serial_addr, input wire [31:0] serial_data, input serial_strobe);
8 reg signed [31:0] integrator;
9 wire signed [15:0] scaled_integrator = integrator[31:16] + (integrator[31] & |integrator[15:0]);
10 assign adc_out = adc_in - scaled_integrator;
12 // FIXME do we need signed?
13 //FIXME What do we do when clipping?
14 always @(posedge clock)
16 integrator <= #1 32'd0;
17 else if(serial_strobe & (MYADDR == serial_addr))
18 integrator <= #1 {serial_data[15:0],16'd0};
20 integrator <= #1 integrator + adc_out;
22 endmodule // rx_dcoffset