Merge branch 'fpga_next' into uhd_next

1 files changed, 173 insertions, 0 deletions

diff --git a/fpga/usrp2/top/B100/u1plus.v b/fpga/usrp2/top/B100/u1plus.v
new file mode 100644
index 000000000..5e3200580
--- /dev/null
+++ b/fpga/usrp2/top/B100/u1plus.v
@@ -0,0 +1,173 @@
+//
+// Copyright 2011 Ettus Research 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 3 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, see <http://www.gnu.org/licenses/>.
+//
+
+`timescale 1ns / 1ps
+//////////////////////////////////////////////////////////////////////////////////
+
+module u1plus
+  (input CLK_FPGA_P, input CLK_FPGA_N,  // Diff
+   output [2:0] debug_led, output [31:0] debug, output [1:0] debug_clk,
+   output FPGA_TXD, input FPGA_RXD,
+
+   // GPIF
+   inout [15:0] GPIF_D, input [3:0] GPIF_CTL, output [3:0] GPIF_RDY,
+   output FX2_PA7_FLAGD, output FX2_PA6_PKTEND, output FX2_PA2_SLOE,
+   input IFCLK,
+   
+   inout SDA_FPGA, inout SCL_FPGA, // I2C
+
+   output SCLK_TX_DB, output SEN_TX_DB, output MOSI_TX_DB, input MISO_TX_DB,   // DB TX SPI
+   output SCLK_RX_DB, output SEN_RX_DB, output MOSI_RX_DB, input MISO_RX_DB,   // DB TX SPI
+   output SCLK_CODEC, output SEN_CODEC, output MOSI_CODEC, input MISO_CODEC,   // AD9862 main SPI
+
+   input cgen_st_status, input cgen_st_ld, input cgen_st_refmon, output cgen_sync_b, output cgen_ref_sel,
+   
+   inout [15:0] io_tx, inout [15:0] io_rx,
+
+   output [13:0] dac, output TXSYNC, output TXBLANK,
+   input [11:0] adc, input RXSYNC,
+  
+   input PPS_IN,
+   input reset_n, output reset_codec
+   );
+
+   assign reset_codec = 1;  // Believed to be active low
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // Clocking
+   wire  clk_fpga, clk_fpga_in, reset;
+   
+   IBUFGDS #(.IOSTANDARD("LVDS_33"), .DIFF_TERM("TRUE")) 
+   clk_fpga_pin (.O(clk_fpga_in),.I(CLK_FPGA_P),.IB(CLK_FPGA_N));
+
+   BUFG clk_fpga_BUFG (.I(clk_fpga_in), .O(clk_fpga));
+   
+   reset_sync reset_sync(.clk(clk_fpga), .reset_in(~reset_n), .reset_out(reset));
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // SPI
+   wire  mosi, sclk, miso;
+   assign { SCLK_TX_DB, MOSI_TX_DB } = ~SEN_TX_DB ? {sclk,mosi} : 2'b0;
+   assign { SCLK_RX_DB, MOSI_RX_DB } = ~SEN_RX_DB ? {sclk,mosi} : 2'b0;
+   assign { SCLK_CODEC, MOSI_CODEC } = ~SEN_CODEC ? {sclk,mosi} : 2'b0;
+   assign miso = (~SEN_TX_DB & MISO_TX_DB) | (~SEN_RX_DB & MISO_RX_DB) |
+		 (~SEN_CODEC & MISO_CODEC);
+
+   // /////////////////////////////////////////////////////////////////////////
+   // TX DAC -- handle the interleaved data bus to DAC, with clock doubling DLL
+
+   assign TXBLANK = 0;
+   wire [13:0] tx_i, tx_q;
+
+   genvar i;
+   generate
+      for(i=0;i<14;i=i+1)
+	begin : gen_dacout
+	   ODDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1" 
+		   .INIT(1'b0),            // Sets initial state of the Q output to 1'b0 or 1'b1
+		   .SRTYPE("SYNC"))        // Specifies "SYNC" or "ASYNC" set/reset
+	   ODDR2_inst (.Q(dac[i]),      // 1-bit DDR output data
+		       .C0(clk_fpga),  // 1-bit clock input
+		       .C1(~clk_fpga), // 1-bit clock input
+		       .CE(1'b1),      // 1-bit clock enable input
+		       .D0(tx_i[i]),   // 1-bit data input (associated with C0)
+		       .D1(tx_q[i]),   // 1-bit data input (associated with C1)
+		       .R(1'b0),       // 1-bit reset input
+		       .S(1'b0));      // 1-bit set input
+	end // block: gen_dacout
+      endgenerate
+   ODDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1" 
+	   .INIT(1'b0),            // Sets initial state of the Q output to 1'b0 or 1'b1
+	   .SRTYPE("SYNC"))        // Specifies "SYNC" or "ASYNC" set/reset
+   ODDR2_txsnc (.Q(TXSYNC),      // 1-bit DDR output data
+		.C0(clk_fpga),  // 1-bit clock input
+		.C1(~clk_fpga), // 1-bit clock input
+		.CE(1'b1),      // 1-bit clock enable input
+		.D0(1'b0),   // 1-bit data input (associated with C0)
+		.D1(1'b1),   // 1-bit data input (associated with C1)
+		.R(1'b0),       // 1-bit reset input
+		.S(1'b0));      // 1-bit set input
+
+   // /////////////////////////////////////////////////////////////////////////
+   // RX ADC -- handles deinterleaving
+
+   reg [11:0] rx_i, rx_q;
+   wire [11:0] rx_a, rx_b;
+   
+   genvar      j;
+   generate
+      for(j=0;j<12;j=j+1)
+	begin : gen_adcin
+	   IDDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1"
+		   .INIT_Q0(1'b0),         // Sets initial state of the Q0 output to 1’b0 or 1’b1
+		   .INIT_Q1(1'b0),         // Sets initial state of the Q1 output to 1’b0 or 1’b1
+		   .SRTYPE("SYNC"))        // Specifies "SYNC" or "ASYNC" set/reset
+	   IDDR2_inst (.Q0(rx_a[j]),      // 1-bit output captured with C0 clock
+		       .Q1(rx_b[j]),      // 1-bit output captured with C1 clock
+		       .C0(clk_fpga),     // 1-bit clock input
+		       .C1(~clk_fpga),    // 1-bit clock input
+		       .CE(1'b1),         // 1-bit clock enable input
+		       .D(adc[j]),        // 1-bit DDR data input
+		       .R(1'b0),          // 1-bit reset input
+		       .S(1'b0));         // 1-bit set input
+	end // block: gen_adcin
+   endgenerate
+   
+   IDDR2 #(.DDR_ALIGNMENT("NONE"), // Sets output alignment to "NONE", "C0" or "C1"
+	   .INIT_Q0(1'b0),         // Sets initial state of the Q0 output to 1’b0 or 1’b1
+	   .INIT_Q1(1'b0),         // Sets initial state of the Q1 output to 1’b0 or 1’b1
+	   .SRTYPE("SYNC"))        // Specifies "SYNC" or "ASYNC" set/reset
+   IDDR2_sync (.Q0(rxsync_0),      // 1-bit output captured with C0 clock
+	       .Q1(rxsync_1),      // 1-bit output captured with C1 clock
+	       .C0(clk_fpga),     // 1-bit clock input
+	       .C1(~clk_fpga),    // 1-bit clock input
+	       .CE(1'b1),         // 1-bit clock enable input
+	       .D(RXSYNC),        // 1-bit DDR data input
+	       .R(1'b0),          // 1-bit reset input
+	       .S(1'b0));         // 1-bit set input
+
+   always @(posedge clk_fpga)
+     if(rxsync_0)
+       begin
+	  rx_i <= rx_b;
+	  rx_q <= rx_a;
+       end
+     else
+       begin
+	  rx_i <= rx_a;
+	  rx_q <= rx_b;
+       end
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // Main U1E Core
+   u1plus_core u1p_c(.clk_fpga(clk_fpga), .rst_fpga(reset),
+		     .debug_led(debug_led), .debug(debug), .debug_clk(debug_clk),
+		     .debug_txd(FPGA_TXD), .debug_rxd(FPGA_RXD),
+		     .gpif_d(GPIF_D), .gpif_ctl(GPIF_CTL), .gpif_rdy(GPIF_RDY),
+		     .gpif_misc({FX2_PA7_FLAGD,FX2_PA6_PKTEND,FX2_PA2_SLOE}),
+		     .gpif_clk(IFCLK),
+
+		     .db_sda(SDA_FPGA), .db_scl(SCL_FPGA),
+		     .sclk(sclk), .sen({SEN_CODEC,SEN_TX_DB,SEN_RX_DB}), .mosi(mosi), .miso(miso),
+		     .cgen_st_status(cgen_st_status), .cgen_st_ld(cgen_st_ld),.cgen_st_refmon(cgen_st_refmon), 
+		     .cgen_sync_b(cgen_sync_b), .cgen_ref_sel(cgen_ref_sel),
+		     .io_tx(io_tx), .io_rx(io_rx),
+		     .tx_i(tx_i), .tx_q(tx_q), 
+		     .rx_i(rx_i), .rx_q(rx_q),
+		     .pps_in(PPS_IN) );
+
+endmodule // u1plus