diff options
Diffstat (limited to 'fpga/usrp1/sdr_lib/master_control.v')
| -rw-r--r-- | fpga/usrp1/sdr_lib/master_control.v | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/fpga/usrp1/sdr_lib/master_control.v b/fpga/usrp1/sdr_lib/master_control.v new file mode 100644 index 000000000..3bce55f23 --- /dev/null +++ b/fpga/usrp1/sdr_lib/master_control.v @@ -0,0 +1,163 @@ +// -*- verilog -*- +// +// USRP - Universal Software Radio Peripheral +// +// Copyright (C) 2003,2005 Matt Ettus +// Copyright (C) 2007 Corgan Enterprises LLC +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA +// + +// Clock, enable, and reset controls for whole system + +module master_control + ( input master_clk, input usbclk, + input wire [6:0] serial_addr, input wire [31:0] serial_data, input wire serial_strobe, + output tx_bus_reset, output rx_bus_reset, + output wire tx_dsp_reset, output wire rx_dsp_reset, + output wire enable_tx, output wire enable_rx, + output wire [7:0] interp_rate, output wire [7:0] decim_rate, + output tx_sample_strobe, output strobe_interp, + output rx_sample_strobe, output strobe_decim, + input tx_empty, + input wire [15:0] debug_0,input wire [15:0] debug_1,input wire [15:0] debug_2,input wire [15:0] debug_3, + output wire [15:0] reg_0, output wire [15:0] reg_1, output wire [15:0] reg_2, output wire [15:0] reg_3 + ); + + // FIXME need a separate reset for all control settings + // Master Controls assignments + wire [7:0] master_controls; + setting_reg #(`FR_MASTER_CTRL) sr_mstr_ctrl(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(master_controls)); + assign enable_tx = master_controls[0]; + assign enable_rx = master_controls[1]; + assign tx_dsp_reset = master_controls[2]; + assign rx_dsp_reset = master_controls[3]; + // Unused - 4-7 + + // Strobe Generators + setting_reg #(`FR_INTERP_RATE) sr_interp(.clock(master_clk),.reset(tx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(interp_rate)); + setting_reg #(`FR_DECIM_RATE) sr_decim(.clock(master_clk),.reset(rx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(decim_rate)); + + strobe_gen da_strobe_gen + ( .clock(master_clk),.reset(tx_dsp_reset),.enable(enable_tx), + .rate(8'd1),.strobe_in(1'b1),.strobe(tx_sample_strobe) ); + + strobe_gen tx_strobe_gen + ( .clock(master_clk),.reset(tx_dsp_reset),.enable(enable_tx), + .rate(interp_rate),.strobe_in(tx_sample_strobe),.strobe(strobe_interp) ); + + assign rx_sample_strobe = 1'b1; + + strobe_gen decim_strobe_gen + ( .clock(master_clk),.reset(rx_dsp_reset),.enable(enable_rx), + .rate(decim_rate),.strobe_in(rx_sample_strobe),.strobe(strobe_decim) ); + + // Reset syncs for bus (usbclk) side + // The RX bus side reset isn't used, the TX bus side one may not be needed + reg tx_reset_bus_sync1, rx_reset_bus_sync1, tx_reset_bus_sync2, rx_reset_bus_sync2; + + always @(posedge usbclk) + begin + tx_reset_bus_sync1 <= #1 tx_dsp_reset; + rx_reset_bus_sync1 <= #1 rx_dsp_reset; + tx_reset_bus_sync2 <= #1 tx_reset_bus_sync1; + rx_reset_bus_sync2 <= #1 rx_reset_bus_sync1; + end + + assign tx_bus_reset = tx_reset_bus_sync2; + assign rx_bus_reset = rx_reset_bus_sync2; + + wire [7:0] txa_refclk, rxa_refclk, txb_refclk, rxb_refclk; + wire txaclk,txbclk,rxaclk,rxbclk; + wire [3:0] debug_en, txcvr_ctrl; + + wire [31:0] txcvr_rxlines, txcvr_txlines; + + setting_reg #(`FR_TX_A_REFCLK) sr_txaref(.clock(master_clk),.reset(tx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(txa_refclk)); + setting_reg #(`FR_RX_A_REFCLK) sr_rxaref(.clock(master_clk),.reset(rx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(rxa_refclk)); + setting_reg #(`FR_TX_B_REFCLK) sr_txbref(.clock(master_clk),.reset(tx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(txb_refclk)); + setting_reg #(`FR_RX_B_REFCLK) sr_rxbref(.clock(master_clk),.reset(rx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(rxb_refclk)); + + setting_reg #(`FR_DEBUG_EN) sr_debugen(.clock(master_clk),.reset(rx_dsp_reset|tx_dsp_reset),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(debug_en)); + + clk_divider clk_div_0 (.reset(tx_dsp_reset),.in_clk(master_clk),.out_clk(txaclk),.ratio(txa_refclk[6:0])); + clk_divider clk_div_1 (.reset(rx_dsp_reset),.in_clk(master_clk),.out_clk(rxaclk),.ratio(rxa_refclk[6:0])); + clk_divider clk_div_2 (.reset(tx_dsp_reset),.in_clk(master_clk),.out_clk(txbclk),.ratio(txb_refclk[6:0])); + clk_divider clk_div_3 (.reset(rx_dsp_reset),.in_clk(master_clk),.out_clk(rxbclk),.ratio(rxb_refclk[6:0])); + + reg [15:0] io_0_reg,io_1_reg,io_2_reg,io_3_reg; + // Upper 16 bits are mask for lower 16 + always @(posedge master_clk) + if(serial_strobe) + case(serial_addr) + `FR_IO_0 : io_0_reg + <= #1 (io_0_reg & ~serial_data[31:16]) | (serial_data[15:0] & serial_data[31:16] ); + `FR_IO_1 : io_1_reg + <= #1 (io_1_reg & ~serial_data[31:16]) | (serial_data[15:0] & serial_data[31:16] ); + `FR_IO_2 : io_2_reg + <= #1 (io_2_reg & ~serial_data[31:16]) | (serial_data[15:0] & serial_data[31:16] ); + `FR_IO_3 : io_3_reg + <= #1 (io_3_reg & ~serial_data[31:16]) | (serial_data[15:0] & serial_data[31:16] ); + endcase // case(serial_addr) + + wire transmit_now; + wire atr_ctl; + wire [11:0] atr_tx_delay, atr_rx_delay; + wire [15:0] atr_mask_0, atr_txval_0, atr_rxval_0, atr_mask_1, atr_txval_1, atr_rxval_1, atr_mask_2, atr_txval_2, atr_rxval_2, atr_mask_3, atr_txval_3, atr_rxval_3; + + setting_reg #(`FR_ATR_MASK_0) sr_atr_mask_0(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_mask_0)); + setting_reg #(`FR_ATR_TXVAL_0) sr_atr_txval_0(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_txval_0)); + setting_reg #(`FR_ATR_RXVAL_0) sr_atr_rxval_0(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_rxval_0)); + + setting_reg #(`FR_ATR_MASK_1) sr_atr_mask_1(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_mask_1)); + setting_reg #(`FR_ATR_TXVAL_1) sr_atr_txval_1(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_txval_1)); + setting_reg #(`FR_ATR_RXVAL_1) sr_atr_rxval_1(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_rxval_1)); + + setting_reg #(`FR_ATR_MASK_2) sr_atr_mask_2(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_mask_2)); + setting_reg #(`FR_ATR_TXVAL_2) sr_atr_txval_2(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_txval_2)); + setting_reg #(`FR_ATR_RXVAL_2) sr_atr_rxval_2(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_rxval_2)); + + setting_reg #(`FR_ATR_MASK_3) sr_atr_mask_3(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_mask_3)); + setting_reg #(`FR_ATR_TXVAL_3) sr_atr_txval_3(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_txval_3)); + setting_reg #(`FR_ATR_RXVAL_3) sr_atr_rxval_3(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_rxval_3)); + + //setting_reg #(`FR_ATR_CTL) sr_atr_ctl(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_ctl)); + setting_reg #(`FR_ATR_TX_DELAY) sr_atr_tx_delay(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_tx_delay)); + setting_reg #(`FR_ATR_RX_DELAY) sr_atr_rx_delay(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(atr_rx_delay)); + + assign atr_ctl = 1'b1; + + atr_delay atr_delay(.clk_i(master_clk),.rst_i(tx_dsp_reset),.ena_i(atr_ctl),.tx_empty_i(tx_empty), + .tx_delay_i(atr_tx_delay),.rx_delay_i(atr_rx_delay),.atr_tx_o(transmit_now)); + + wire [15:0] atr_selected_0 = transmit_now ? atr_txval_0 : atr_rxval_0; + wire [15:0] io_0 = ({{16{atr_ctl}}} & atr_mask_0 & atr_selected_0) | (~({{16{atr_ctl}}} & atr_mask_0) & io_0_reg); + + wire [15:0] atr_selected_1 = transmit_now ? atr_txval_1 : atr_rxval_1; + wire [15:0] io_1 = ({{16{atr_ctl}}} & atr_mask_1 & atr_selected_1) | (~({{16{atr_ctl}}} & atr_mask_1) & io_1_reg); + + wire [15:0] atr_selected_2 = transmit_now ? atr_txval_2 : atr_rxval_2; + wire [15:0] io_2 = ({{16{atr_ctl}}} & atr_mask_2 & atr_selected_2) | (~({{16{atr_ctl}}} & atr_mask_2) & io_2_reg); + + wire [15:0] atr_selected_3 = transmit_now ? atr_txval_3 : atr_rxval_3; + wire [15:0] io_3 = ({{16{atr_ctl}}} & atr_mask_3 & atr_selected_3) | (~({{16{atr_ctl}}} & atr_mask_3) & io_3_reg); + + assign reg_0 = debug_en[0] ? debug_0 : txa_refclk[7] ? {io_0[15:1],txaclk} : io_0; + assign reg_1 = debug_en[1] ? debug_1 : rxa_refclk[7] ? {io_1[15:1],rxaclk} : io_1; + assign reg_2 = debug_en[2] ? debug_2 : txb_refclk[7] ? {io_2[15:1],txbclk} : io_2; + assign reg_3 = debug_en[3] ? debug_3 : rxb_refclk[7] ? {io_3[15:1],rxbclk} : io_3; + + +endmodule // master_control |