diff options
Diffstat (limited to 'usrp/fpga/sdr_lib/adc_interface.v')
-rw-r--r-- | usrp/fpga/sdr_lib/adc_interface.v | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/usrp/fpga/sdr_lib/adc_interface.v b/usrp/fpga/sdr_lib/adc_interface.v deleted file mode 100644 index f18ffc104..000000000 --- a/usrp/fpga/sdr_lib/adc_interface.v +++ /dev/null @@ -1,71 +0,0 @@ - - -`include "../../firmware/include/fpga_regs_common.v" -`include "../../firmware/include/fpga_regs_standard.v" - -module adc_interface - (input clock, input reset, input enable, - input wire [6:0] serial_addr, input wire [31:0] serial_data, input serial_strobe, - input wire [11:0] rx_a_a, input wire [11:0] rx_b_a, input wire [11:0] rx_a_b, input wire [11:0] rx_b_b, - output wire [31:0] rssi_0, output wire [31:0] rssi_1, output wire [31:0] rssi_2, output wire [31:0] rssi_3, - output reg [15:0] ddc0_in_i, output reg [15:0] ddc0_in_q, - output reg [15:0] ddc1_in_i, output reg [15:0] ddc1_in_q, - output reg [15:0] ddc2_in_i, output reg [15:0] ddc2_in_q, - output reg [15:0] ddc3_in_i, output reg [15:0] ddc3_in_q, - output wire [3:0] rx_numchan); - - // Buffer at input to chip - reg [11:0] adc0,adc1,adc2,adc3; - always @(posedge clock) - begin - adc0 <= #1 rx_a_a; - adc1 <= #1 rx_b_a; - adc2 <= #1 rx_a_b; - adc3 <= #1 rx_b_b; - end - - // then scale and subtract dc offset - wire [3:0] dco_en; - wire [15:0] adc0_corr,adc1_corr,adc2_corr,adc3_corr; - - setting_reg #(`FR_DC_OFFSET_CL_EN) sr_dco_en(.clock(clock),.reset(reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data), - .out(dco_en)); - - rx_dcoffset #(`FR_ADC_OFFSET_0) rx_dcoffset0(.clock(clock),.enable(dco_en[0]),.reset(reset),.adc_in({adc0[11],adc0,3'b0}),.adc_out(adc0_corr), - .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe)); - rx_dcoffset #(`FR_ADC_OFFSET_1) rx_dcoffset1(.clock(clock),.enable(dco_en[1]),.reset(reset),.adc_in({adc1[11],adc1,3'b0}),.adc_out(adc1_corr), - .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe)); - rx_dcoffset #(`FR_ADC_OFFSET_2) rx_dcoffset2(.clock(clock),.enable(dco_en[2]),.reset(reset),.adc_in({adc2[11],adc2,3'b0}),.adc_out(adc2_corr), - .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe)); - rx_dcoffset #(`FR_ADC_OFFSET_3) rx_dcoffset3(.clock(clock),.enable(dco_en[3]),.reset(reset),.adc_in({adc3[11],adc3,3'b0}),.adc_out(adc3_corr), - .serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe)); - - // Level sensing for AGC - rssi rssi_block_0 (.clock(clock),.reset(reset),.enable(enable),.adc(adc0),.rssi(rssi_0[15:0]),.over_count(rssi_0[31:16])); - rssi rssi_block_1 (.clock(clock),.reset(reset),.enable(enable),.adc(adc1),.rssi(rssi_1[15:0]),.over_count(rssi_1[31:16])); - rssi rssi_block_2 (.clock(clock),.reset(reset),.enable(enable),.adc(adc2),.rssi(rssi_2[15:0]),.over_count(rssi_2[31:16])); - rssi rssi_block_3 (.clock(clock),.reset(reset),.enable(enable),.adc(adc3),.rssi(rssi_3[15:0]),.over_count(rssi_3[31:16])); - - // And mux to the appropriate outputs - wire [3:0] ddc3mux,ddc2mux,ddc1mux,ddc0mux; - wire rx_realsignals; - - setting_reg #(`FR_RX_MUX) sr_rxmux(.clock(clock),.reset(reset),.strobe(serial_strobe),.addr(serial_addr), - .in(serial_data),.out({ddc3mux,ddc2mux,ddc1mux,ddc0mux,rx_realsignals,rx_numchan[3:1]})); - assign rx_numchan[0] = 1'b0; - - always @(posedge clock) - begin - ddc0_in_i <= #1 ddc0mux[1] ? (ddc0mux[0] ? adc3_corr : adc2_corr) : (ddc0mux[0] ? adc1_corr : adc0_corr); - ddc0_in_q <= #1 rx_realsignals ? 16'd0 : ddc0mux[3] ? (ddc0mux[2] ? adc3_corr : adc2_corr) : (ddc0mux[2] ? adc1_corr : adc0_corr); - ddc1_in_i <= #1 ddc1mux[1] ? (ddc1mux[0] ? adc3_corr : adc2_corr) : (ddc1mux[0] ? adc1_corr : adc0_corr); - ddc1_in_q <= #1 rx_realsignals ? 16'd0 : ddc1mux[3] ? (ddc1mux[2] ? adc3_corr : adc2_corr) : (ddc1mux[2] ? adc1_corr : adc0_corr); - ddc2_in_i <= #1 ddc2mux[1] ? (ddc2mux[0] ? adc3_corr : adc2_corr) : (ddc2mux[0] ? adc1_corr : adc0_corr); - ddc2_in_q <= #1 rx_realsignals ? 16'd0 : ddc2mux[3] ? (ddc2mux[2] ? adc3_corr : adc2_corr) : (ddc2mux[2] ? adc1_corr : adc0_corr); - ddc3_in_i <= #1 ddc3mux[1] ? (ddc3mux[0] ? adc3_corr : adc2_corr) : (ddc3mux[0] ? adc1_corr : adc0_corr); - ddc3_in_q <= #1 rx_realsignals ? 16'd0 : ddc3mux[3] ? (ddc3mux[2] ? adc3_corr : adc2_corr) : (ddc3mux[2] ? adc1_corr : adc0_corr); - end - -endmodule // adc_interface - - |