1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
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
|
