aboutsummaryrefslogtreecommitdiffstats
path: root/fpga/usrp2/top/N2x0
diff options
context:
space:
mode:
Diffstat (limited to 'fpga/usrp2/top/N2x0')
-rw-r--r--fpga/usrp2/top/N2x0/u2plus_core.v113
1 files changed, 43 insertions, 70 deletions
diff --git a/fpga/usrp2/top/N2x0/u2plus_core.v b/fpga/usrp2/top/N2x0/u2plus_core.v
index 4d612bfab..dd3d33b37 100644
--- a/fpga/usrp2/top/N2x0/u2plus_core.v
+++ b/fpga/usrp2/top/N2x0/u2plus_core.v
@@ -129,7 +129,7 @@ module u2plus_core
// External RAM
input [35:0] RAM_D_pi,
output [35:0] RAM_D_po,
- output RAM_D_poe,
+ output RAM_D_poe,
output [20:0] RAM_A,
output RAM_CE1n,
output RAM_CENn,
@@ -163,6 +163,7 @@ module u2plus_core
localparam SR_TX_CTRL = 144; // 6
localparam SR_TX_DSP = 160; // 5
+ localparam SR_GPIO = 184; // 5
localparam SR_UDP_SM = 192; // 64
// FIFO Sizes, 9 = 512 lines, 10 = 1024, 11 = 2048
@@ -227,14 +228,14 @@ module u2plus_core
.s1_addr(8'b0100_0000),.s1_mask(8'b1111_0000), // Packet Router (16-20K)
.s2_addr(8'b0101_0000),.s2_mask(8'b1111_1100), // SPI
.s3_addr(8'b0101_0100),.s3_mask(8'b1111_1100), // I2C
- .s4_addr(8'b0101_1000),.s4_mask(8'b1111_1100), // GPIO
+ .s4_addr(8'b0101_1000),.s4_mask(8'b1111_1100), // Unused
.s5_addr(8'b0101_1100),.s5_mask(8'b1111_1100), // Readback
.s6_addr(8'b0110_0000),.s6_mask(8'b1111_0000), // Ethernet MAC
- .s7_addr(8'b0111_0000),.s7_mask(8'b1111_0000), // 20K-24K, Settings Bus (only uses 1K)
+ .s7_addr(8'b0111_0000),.s7_mask(8'b1111_0000), // Settings Bus (only uses 1K)
.s8_addr(8'b1000_0000),.s8_mask(8'b1111_1100), // PIC
.s9_addr(8'b1000_0100),.s9_mask(8'b1111_1100), // Unused
.sa_addr(8'b1000_1000),.sa_mask(8'b1111_1100), // UART
- .sb_addr(8'b1000_1100),.sb_mask(8'b1111_1100), // ATR
+ .sb_addr(8'b1000_1100),.sb_mask(8'b1111_1100), // Unused
.sc_addr(8'b1001_0000),.sc_mask(8'b1111_0000), // Unused
.sd_addr(8'b1010_0000),.sd_mask(8'b1111_0000), // ICAP
.se_addr(8'b1011_0000),.se_mask(8'b1111_0000), // SPI Flash
@@ -275,7 +276,11 @@ module u2plus_core
.se_dat_i(se_dat_i),.se_ack_i(se_ack),.se_err_i(0),.se_rty_i(0),
.sf_dat_o(sf_dat_o),.sf_adr_o(sf_adr),.sf_sel_o(sf_sel),.sf_we_o(sf_we),.sf_cyc_o(sf_cyc),.sf_stb_o(sf_stb),
.sf_dat_i(sf_dat_i),.sf_ack_i(sf_ack),.sf_err_i(0),.sf_rty_i(0));
-
+
+ // Unused Slaves 9, b, c
+ assign s4_ack = 0;
+ assign s9_ack = 0; assign sb_ack = 0; assign sc_ack = 0;
+
// ////////////////////////////////////////////////////////////////////////////////////////
// Reset Controller
@@ -416,18 +421,21 @@ module u2plus_core
assign s3_dat_i[31:8] = 24'd0;
// /////////////////////////////////////////////////////////////////////////
- // GPIOs -- Slave #4
+ // GPIOs
- nsgpio nsgpio(.clk_i(wb_clk),.rst_i(wb_rst),
- .cyc_i(s4_cyc),.stb_i(s4_stb),.adr_i(s4_adr[4:0]),.we_i(s4_we),
- .dat_i(s4_dat_o),.dat_o(s4_dat_i),.ack_o(s4_ack),
- .rx(run_rx0_d1 | rx_rx1_d1), .tx(run_tx), .gpio({io_tx,io_rx}) );
+ wire [31:0] gpio_readback;
+
+ gpio_atr #(.BASE(SR_GPIO), .WIDTH(32))
+ gpio_atr(.clk(dsp_clk),.reset(dsp_rst),
+ .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+ .rx(run_rx0_d1 | run_rx1_d1), .tx(run_tx),
+ .gpio({io_tx,io_rx}), .gpio_readback(gpio_readback) );
// /////////////////////////////////////////////////////////////////////////
// Buffer Pool Status -- Slave #5
//compatibility number -> increment when the fpga has been sufficiently altered
- localparam compat_num = {16'd7, 16'd3}; //major, minor
+ localparam compat_num = {16'd8, 16'd0}; //major, minor
wb_readback_mux buff_pool_status
(.wb_clk_i(wb_clk), .wb_rst_i(wb_rst), .wb_stb_i(s5_stb),
@@ -435,8 +443,8 @@ module u2plus_core
.word00(32'b0),.word01(32'b0),.word02(32'b0),.word03(32'b0),
.word04(32'b0),.word05(32'b0),.word06(32'b0),.word07(32'b0),
- .word08(status),.word09(32'b0),.word10(vita_time[63:32]),
- .word11(vita_time[31:0]),.word12(compat_num),.word13(irq),
+ .word08(status),.word09(gpio_readback),.word10(vita_time[63:32]),
+ .word11(vita_time[31:0]),.word12(compat_num),.word13({18'b0, button, 13'b0}),
.word14(vita_time_pps[63:32]),.word15(vita_time_pps[31:0])
);
@@ -480,16 +488,20 @@ module u2plus_core
wire phy_reset;
assign PHY_RESETn = ~phy_reset;
- setting_reg #(.my_addr(SR_MISC+0),.width(8)) sr_clk (.clk(wb_clk),.rst(wb_rst),.strobe(s7_ack),.addr(set_addr),
- .in(set_data),.out(clock_outs),.changed());
- setting_reg #(.my_addr(SR_MISC+1),.width(8)) sr_ser (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
- .in(set_data),.out(serdes_outs),.changed());
- setting_reg #(.my_addr(SR_MISC+2),.width(8)) sr_adc (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
- .in(set_data),.out(adc_outs),.changed());
- setting_reg #(.my_addr(SR_MISC+4),.width(1)) sr_phy (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
- .in(set_data),.out(phy_reset),.changed());
- setting_reg #(.my_addr(SR_MISC+5),.width(1)) sr_bld (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
- .in(set_data),.out(bldr_done),.changed());
+ setting_reg #(.my_addr(SR_MISC+0),.width(8)) sr_clk
+ (.clk(wb_clk),.rst(wb_rst),.strobe(s7_ack),.addr(set_addr),.in(set_data),.out(clock_outs),.changed());
+
+ setting_reg #(.my_addr(SR_MISC+1),.width(8)) sr_ser
+ (.clk(dsp_clk),.rst(dsp_rst),.strobe(set_stb_dsp),.addr(set_addr_dsp),.in(set_data_dsp),.out(serdes_outs),.changed());
+
+ setting_reg #(.my_addr(SR_MISC+2),.width(8)) sr_adc
+ (.clk(dsp_clk),.rst(dsp_rst),.strobe(set_stb_dsp),.addr(set_addr_dsp),.in(set_data_dsp),.out(adc_outs),.changed());
+
+ setting_reg #(.my_addr(SR_MISC+4),.width(1)) sr_phy
+ (.clk(dsp_clk),.rst(dsp_rst),.strobe(set_stb_dsp),.addr(set_addr_dsp),.in(set_data_dsp),.out(phy_reset),.changed());
+
+ setting_reg #(.my_addr(SR_MISC+5),.width(1)) sr_bld
+ (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),.in(set_data),.out(bldr_done),.changed());
// /////////////////////////////////////////////////////////////////////////
// LEDS
@@ -500,48 +512,27 @@ module u2plus_core
wire [7:0] led_src, led_sw;
wire [7:0] led_hw = {run_tx, (run_rx0_d1 | run_rx1_d1), clk_status, serdes_link_up & good_sync, 1'b0};
- setting_reg #(.my_addr(SR_MISC+3),.width(8)) sr_led (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
- .in(set_data),.out(led_sw),.changed());
+ setting_reg #(.my_addr(SR_MISC+3),.width(8)) sr_led
+ (.clk(dsp_clk),.rst(dsp_rst),.strobe(set_stb_dsp),.addr(set_addr_dsp),.in(set_data_dsp),.out(led_sw),.changed());
- setting_reg #(.my_addr(SR_MISC+6),.width(8), .at_reset(8'b0001_1110))
- sr_led_src (.clk(wb_clk),.rst(wb_rst), .strobe(set_stb),.addr(set_addr), .in(set_data),.out(led_src),.changed());
+ setting_reg #(.my_addr(SR_MISC+6),.width(8), .at_reset(8'b0001_1110)) sr_led_src
+ (.clk(dsp_clk),.rst(dsp_rst),.strobe(set_stb_dsp),.addr(set_addr_dsp), .in(set_data_dsp),.out(led_src),.changed());
assign leds = (led_src & led_hw) | (~led_src & led_sw);
// /////////////////////////////////////////////////////////////////////////
// Interrupt Controller, Slave #8
- // Pass interrupts on dsp_clk to wb_clk. These need edge triggering in the pic
- wire underrun_wb, overrun_wb, pps_wb;
-
- oneshot_2clk underrun_1s (.clk_in(dsp_clk), .in(underrun), .clk_out(wb_clk), .out(underrun_wb));
- oneshot_2clk overrun_1s (.clk_in(dsp_clk), .in(overrun0 | overrun1), .clk_out(wb_clk), .out(overrun_wb));
- oneshot_2clk pps_1s (.clk_in(dsp_clk), .in(pps_int), .clk_out(wb_clk), .out(pps_wb));
-
assign irq= {{8'b0},
{uart_tx_int[3:0], uart_rx_int[3:0]},
- {2'b0, button, periodic_int, clk_status, serdes_link_up, 2'b00},
- {pps_wb,overrun_wb,underrun_wb,PHY_INTn,i2c_int,spi_int,onetime_int,buffer_int}};
+ {4'b0, clk_status, 3'b0},
+ {3'b0, PHY_INTn,i2c_int,spi_int,2'b00}};
pic pic(.clk_i(wb_clk),.rst_i(wb_rst),.cyc_i(s8_cyc),.stb_i(s8_stb),.adr_i(s8_adr[4:2]),
.we_i(s8_we),.dat_i(s8_dat_o),.dat_o(s8_dat_i),.ack_o(s8_ack),.int_o(proc_int),
.irq(irq) );
// /////////////////////////////////////////////////////////////////////////
- // Master Timer, Slave #9
-
- // No longer used, replaced with simple_timer below
- assign s9_ack = 0;
-
- // /////////////////////////////////////////////////////////////////////////
- // Simple Timer interrupts
- /*
- simple_timer #(.BASE(SR_SIMTIMER)) simple_timer
- (.clk(wb_clk), .reset(wb_rst),
- .set_stb(set_stb), .set_addr(set_addr), .set_data(set_data),
- .onetime_int(onetime_int), .periodic_int(periodic_int));
- */
- // /////////////////////////////////////////////////////////////////////////
// UART, Slave #10
quad_uart #(.TXDEPTH(3),.RXDEPTH(3)) uart // depth of 3 is 128 entries
@@ -550,24 +541,6 @@ module u2plus_core
.adr_i(sa_adr[6:2]),.dat_i(sa_dat_o),.dat_o(sa_dat_i),
.rx_int_o(uart_rx_int),.tx_int_o(uart_tx_int),
.tx_o(uart_tx_o),.rx_i(uart_rx_i),.baud_o(uart_baud_o));
-
- // /////////////////////////////////////////////////////////////////////////
- // ATR Controller, Slave #11
-
- /*
- atr_controller atr_controller
- (.clk_i(wb_clk),.rst_i(wb_rst),
- .adr_i(sb_adr[5:0]),.sel_i(sb_sel),.dat_i(sb_dat_o),.dat_o(sb_dat_i),
- .we_i(sb_we),.stb_i(sb_stb),.cyc_i(sb_cyc),.ack_o(sb_ack),
- .run_rx(run_rx0_d1 | run_rx1_d1),.run_tx(run_tx),.ctrl_lines(atr_lines) );
- */
-
- // //////////////////////////////////////////////////////////////////////////
- // Time Sync, Slave #12
-
- // No longer used, see time_64bit. Still need to handle mimo time, though
- assign sc_ack = 0;
-
// /////////////////////////////////////////////////////////////////////////
// ICAP for reprogramming the FPGA, Slave #13 (D)
@@ -660,8 +633,8 @@ module u2plus_core
wire clear_tx;
setting_reg #(.my_addr(SR_TX_CTRL+1)) sr_clear_tx
- (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr),
- .in(set_data),.out(),.changed(clear_tx));
+ (.clk(dsp_clk),.rst(dsp_rst),.strobe(set_stb_dsp),.addr(set_addr_dsp),
+ .in(set_data_dsp),.out(),.changed(clear_tx));
assign RAM_A[20:18] = 3'b0;
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-04 04:24:24 +0000