lots of renaming and moving around of toplevel directories to reflect product names

1 files changed, 572 insertions, 0 deletions

diff --git a/usrp2/top/USRP2/u2_rev3.v b/usrp2/top/USRP2/u2_rev3.v
new file mode 100644
index 000000000..bc7ae5f16
--- /dev/null
+++ b/usrp2/top/USRP2/u2_rev3.v
@@ -0,0 +1,572 @@
+`timescale 1ns / 1ps
+//////////////////////////////////////////////////////////////////////////////////
+
+module u2_rev3
+  (
+   // Misc, debug
+   output [5:0] leds,
+   output [31:0] debug,
+   output [1:0] debug_clk,
+   output uart_tx_o,
+   input uart_rx_i,
+   
+   // Expansion
+   input exp_time_in_p, // Diff
+   input exp_time_in_n, // Diff
+   output exp_time_out_p, // Diff 
+   output exp_time_out_n, // Diff 
+   
+   // GMII
+   //   GMII-CTRL
+   input GMII_COL,
+   input GMII_CRS,
+
+   //   GMII-TX
+   output reg [7:0] GMII_TXD,
+   output reg GMII_TX_EN,
+   output reg GMII_TX_ER,
+   output GMII_GTX_CLK,
+   input GMII_TX_CLK,  // 100mbps clk
+
+   //   GMII-RX
+   input [7:0] GMII_RXD,
+   input GMII_RX_CLK,
+   input GMII_RX_DV,
+   input GMII_RX_ER,
+
+   //   GMII-Management
+   inout MDIO,
+   output MDC,
+   input PHY_INTn,   // open drain
+   output PHY_RESETn,
+   input PHY_CLK,   // possibly use on-board osc
+
+   // RAM
+   inout [17:0] RAM_D,
+   output [18:0] RAM_A,
+   output RAM_CE1n,
+   output RAM_CENn,
+   output RAM_CLK,
+   output RAM_WEn,
+   output RAM_OEn,
+   output RAM_LDn,
+   
+   // SERDES
+   output ser_enable,
+   output ser_prbsen,
+   output ser_loopen,
+   output ser_rx_en,
+   
+   output ser_tx_clk,
+   output reg [15:0] ser_t,
+   output reg ser_tklsb,
+   output reg ser_tkmsb,
+
+   input ser_rx_clk,
+   input [15:0] ser_r,
+   input ser_rklsb,
+   input ser_rkmsb,
+   
+   // CPLD interface
+   output cpld_start,  // AA9
+   output cpld_mode,   // U12
+   output cpld_done,   // V12
+   input cpld_din,     // AA14 Now shared with CFG_Din
+   input cpld_clk,     // AB14 serial clock
+   input cpld_detached,// V11 unused
+   output cpld_init_b,  // W12 unused dual purpose
+   output cpld_misc,  // Y12 
+
+   // Watchdog interface
+   input POR,
+   output WDI,
+   
+   // ADC
+   input [13:0] adc_a,
+   input adc_ovf_a,
+   output adc_oen_a,
+   output adc_pdn_a,
+   
+   input [13:0] adc_b,
+   input adc_ovf_b,
+   output adc_oen_b,
+   output adc_pdn_b,
+   
+   // DAC
+   output reg [15:0] dac_a,
+   output reg [15:0] dac_b,
+   input dac_lock,     // unused for now
+   
+   // I2C
+   inout SCL,
+   inout SDA,
+
+   // Clock Gen Control
+   output [1:0] clk_en,
+   output [1:0] clk_sel,
+   input clk_func,        // FIXME is an input to control the 9510
+   input clk_status,
+
+   // Clocks
+   input clk_fpga_p,  // Diff
+   input clk_fpga_n,  // Diff
+   input clk_to_mac,
+   input pps_in,
+   
+   // Generic SPI
+   output sclk,
+   output sen_clk,
+   output sen_dac,
+   output sdi,
+   input sdo,
+   
+   // TX DBoard
+   output sen_tx_db,
+   output sclk_tx_db,
+   input sdo_tx_db,
+   output sdi_tx_db,
+
+   output sen_tx_adc,
+   output sclk_tx_adc,
+   input sdo_tx_adc,
+   output sdi_tx_adc,
+
+   output sen_tx_dac,
+   output sclk_tx_dac,
+   output sdi_tx_dac,
+
+   inout [15:0] io_tx,
+
+   // RX DBoard
+   output sen_rx_db,
+   output sclk_rx_db,
+   input sdo_rx_db,
+   output sdi_rx_db,
+
+   output sen_rx_adc,
+   output sclk_rx_adc,
+   input sdo_rx_adc,
+   output sdi_rx_adc,
+
+   output sen_rx_dac,
+   output sclk_rx_dac,
+   output sdi_rx_dac,
+   
+   inout [15:0] io_rx   
+   );
+
+   assign 	cpld_init_b = 0;
+   // FPGA-specific pins connections
+   wire 	clk_fpga, dsp_clk, clk_div, dcm_out, wb_clk, clock_ready;
+   wire 	clk90, clk180, clk270;
+
+   // reset the watchdog continuously
+   reg [15:0] 	wd;
+   wire 	config_success;
+   
+   always @(posedge wb_clk)
+     if(~config_success)
+       wd <= 0;
+     else
+       wd <= wd + 1;
+   assign 	WDI = wd[15];
+   
+   wire 	clk_fpga_unbuf;
+
+   IBUFGDS clk_fpga_pin (.O(clk_fpga_unbuf),.I(clk_fpga_p),.IB(clk_fpga_n));
+   BUFG clk_fpga_BUF (.O(clk_fpga),.I(clk_fpga_unbuf));
+
+   defparam 	clk_fpga_pin.IOSTANDARD = "LVPECL_25";
+
+   wire 	cpld_clock_buf;
+   BUFG cpld_clock_BUF (.O(cpld_clock_buf),.I(cpld_clock));
+   
+   wire 	exp_time_in;
+   IBUFDS exp_time_in_pin (.O(exp_time_in),.I(exp_time_in_p),.IB(exp_time_in_n));
+   defparam 	exp_time_in_pin.IOSTANDARD = "LVDS_25";
+   
+   wire 	exp_time_out;
+   OBUFDS exp_time_out_pin (.O(exp_time_out_p),.OB(exp_time_out_n),.I(exp_time_out));
+   defparam 	exp_time_out_pin.IOSTANDARD = "LVDS_25";
+
+   reg [5:0] 	clock_ready_d;
+   always @(posedge clk_fpga)
+     clock_ready_d[5:0] <= {clock_ready_d[4:0],clock_ready};
+   wire 	dcm_rst = ~&clock_ready_d & |clock_ready_d;
+   
+   wire 	adc_on_a, adc_on_b, adc_oe_a, adc_oe_b;
+   assign 	adc_oen_a = ~adc_oe_a;
+   assign 	adc_oen_b = ~adc_oe_b;
+   assign 	adc_pdn_a = ~adc_on_a; 	
+   assign 	adc_pdn_b = ~adc_on_b; 	
+
+   reg [13:0] 	 adc_a_reg1, adc_b_reg1, adc_a_reg2, adc_b_reg2;
+   reg 		 adc_ovf_a_reg1, adc_ovf_a_reg2, adc_ovf_b_reg1, adc_ovf_b_reg2;
+
+    // ADC A and B are swapped in schematic to facilitate clean layout
+   always @(posedge dsp_clk)
+     begin
+	adc_a_reg1 <= adc_b;
+	adc_b_reg1 <= adc_a;
+	adc_ovf_a_reg1 <= adc_ovf_b;
+	adc_ovf_b_reg1 <= adc_ovf_a;
+     end
+   
+   always @(posedge dsp_clk)
+     begin
+	adc_a_reg2 <= adc_a_reg1;
+	adc_b_reg2 <= adc_b_reg1;
+	adc_ovf_a_reg2 <= adc_ovf_a_reg1;
+	adc_ovf_b_reg2 <= adc_ovf_b_reg1;
+     end // always @ (posedge dsp_clk)
+
+   // Handle Clocks
+   DCM DCM_INST (.CLKFB(dsp_clk), 
+                 .CLKIN(clk_fpga), 
+                 .DSSEN(0), 
+                 .PSCLK(0), 
+                 .PSEN(0), 
+                 .PSINCDEC(0), 
+                 .RST(dcm_rst), 
+                 .CLKDV(clk_div), 
+                 .CLKFX(), 
+                 .CLKFX180(), 
+                 .CLK0(dcm_out), 
+                 .CLK2X(), 
+                 .CLK2X180(), 
+                 .CLK90(clk90), 
+                 .CLK180(clk180), 
+                 .CLK270(clk270), 
+                 .LOCKED(LOCKED_OUT), 
+                 .PSDONE(), 
+                 .STATUS());
+   defparam DCM_INST.CLK_FEEDBACK = "1X";
+   defparam DCM_INST.CLKDV_DIVIDE = 2.0;
+   defparam DCM_INST.CLKFX_DIVIDE = 1;
+   defparam DCM_INST.CLKFX_MULTIPLY = 4;
+   defparam DCM_INST.CLKIN_DIVIDE_BY_2 = "FALSE";
+   defparam DCM_INST.CLKIN_PERIOD = 10.000;
+   defparam DCM_INST.CLKOUT_PHASE_SHIFT = "NONE";
+   defparam DCM_INST.DESKEW_ADJUST = "SYSTEM_SYNCHRONOUS";
+   defparam DCM_INST.DFS_FREQUENCY_MODE = "LOW";
+   defparam DCM_INST.DLL_FREQUENCY_MODE = "LOW";
+   defparam DCM_INST.DUTY_CYCLE_CORRECTION = "TRUE";
+   defparam DCM_INST.FACTORY_JF = 16'h8080;
+   defparam DCM_INST.PHASE_SHIFT = 0;
+   defparam DCM_INST.STARTUP_WAIT = "FALSE";
+
+   BUFG dspclk_BUFG (.I(dcm_out), .O(dsp_clk));
+   BUFG wbclk_BUFG (.I(clk_div), .O(wb_clk));
+
+   // I2C -- Don't use external transistors for open drain, the FPGA implements this
+   IOBUF scl_pin(.O(scl_pad_i), .IO(SCL), .I(scl_pad_o), .T(scl_pad_oen_o));
+   IOBUF sda_pin(.O(sda_pad_i), .IO(SDA), .I(sda_pad_o), .T(sda_pad_oen_o));
+
+   // LEDs are active low outputs
+   wire [5:0] leds_int;
+   assign     leds = 6'b011111 ^ leds_int;  // all except eth are active-low
+   
+   // SPI
+   wire 	miso, mosi, sclk_int;
+   assign 	{sclk,sdi} = (~sen_clk | ~sen_dac) ? {sclk_int,mosi} : 2'b0;
+   assign 	{sclk_tx_db,sdi_tx_db} = ~sen_tx_db ? {sclk_int,mosi} : 2'b0;
+   assign 	{sclk_tx_dac,sdi_tx_dac} = ~sen_tx_dac ? {sclk_int,mosi} : 2'b0;
+   assign 	{sclk_tx_adc,sdi_tx_adc} = ~sen_tx_adc ? {sclk_int,mosi} : 2'b0;
+   assign 	{sclk_rx_db,sdi_rx_db} = ~sen_rx_db ? {sclk_int,mosi} : 2'b0;
+   assign 	{sclk_rx_dac,sdi_rx_dac} = ~sen_rx_dac ? {sclk_int,mosi} : 2'b0;
+   assign 	{sclk_rx_adc,sdi_rx_adc} = ~sen_rx_adc ? {sclk_int,mosi} : 2'b0;
+   
+   assign 	miso = (~sen_clk & sdo) | (~sen_dac & sdo) | 
+		(~sen_tx_db & sdo_tx_db) | (~sen_tx_adc & sdo_tx_adc) |
+		(~sen_rx_db & sdo_rx_db) | (~sen_rx_adc & sdo_rx_adc);
+
+   wire 	GMII_TX_EN_unreg, GMII_TX_ER_unreg;
+   wire [7:0] 	GMII_TXD_unreg;
+   wire 	GMII_GTX_CLK_int;
+   
+   always @(posedge GMII_GTX_CLK_int)
+     begin
+	GMII_TX_EN <= GMII_TX_EN_unreg;
+	GMII_TX_ER <= GMII_TX_ER_unreg;
+	GMII_TXD <= GMII_TXD_unreg;
+     end
+
+   OFDDRRSE OFDDRRSE_gmii_inst 
+     (.Q(GMII_GTX_CLK),      // Data output (connect directly to top-level port)
+      .C0(GMII_GTX_CLK_int),    // 0 degree clock input
+      .C1(~GMII_GTX_CLK_int),    // 180 degree clock input
+      .CE(1),    // Clock enable input
+      .D0(0),    // Posedge data input
+      .D1(1),    // Negedge data input
+      .R(0),      // Synchronous reset input
+      .S(0)       // Synchronous preset input
+      );
+   
+   wire ser_tklsb_unreg, ser_tkmsb_unreg;
+   wire [15:0] ser_t_unreg;
+   wire        ser_tx_clk_int;
+   
+   always @(posedge ser_tx_clk_int)
+     begin
+	ser_tklsb <= ser_tklsb_unreg;
+	ser_tkmsb <= ser_tkmsb_unreg;
+	ser_t <= ser_t_unreg;
+     end
+
+   assign ser_tx_clk = clk_fpga;
+
+   reg [15:0] ser_r_int;
+   reg 	      ser_rklsb_int, ser_rkmsb_int;
+
+   wire       ser_rx_clk_buf;
+   BUFG ser_rx_clk_BUF (.O(ser_rx_clk_buf),.I(ser_rx_clk));
+   always @(posedge ser_rx_clk_buf)
+     begin
+	ser_r_int <= ser_r;
+	ser_rklsb_int <= ser_rklsb;
+	ser_rkmsb_int <= ser_rkmsb;
+     end
+
+   wire [15:0] dac_a_int, dac_b_int;
+   // DAC A and B are swapped in schematic to facilitate clean layout
+   // DAC A is also inverted in schematic to facilitate clean layout
+   always @(posedge dsp_clk) dac_a <= ~dac_b_int;
+   always @(posedge dsp_clk) dac_b <= dac_a_int;
+
+   /*
+   OFDDRRSE OFDDRRSE_serdes_inst 
+     (.Q(ser_tx_clk),      // Data output (connect directly to top-level port)
+      .C0(ser_tx_clk_int),    // 0 degree clock input
+      .C1(~ser_tx_clk_int),    // 180 degree clock input
+      .CE(1),    // Clock enable input
+      .D0(0),    // Posedge data input
+      .D1(1),    // Negedge data input
+      .R(0),      // Synchronous reset input
+      .S(0)       // Synchronous preset input
+      );
+   */
+
+   wire [17:0] RAM_D_pi;
+   wire [17:0] RAM_D_po;
+   wire        RAM_D_poe;
+   
+   genvar      i;
+
+   //
+   // Instantiate IO for Bidirectional bus to SRAM
+   //
+   
+   generate  
+      for (i=0;i<18;i=i+1)
+        begin : gen_RAM_D_IO
+
+	   IOBUF #(
+		   .DRIVE(12),
+		   .IOSTANDARD("LVCMOS25"),
+		   .SLEW("FAST")
+		   )
+	     RAM_D_i (
+		      .O(RAM_D_pi[i]),
+		      .I(RAM_D_po[i]),
+		      .IO(RAM_D[i]),
+		      .T(RAM_D_poe)
+		      );
+	end // block: gen_RAM_D_IO
+   endgenerate
+
+   //
+   // DCM edits start here
+   //
+
+ 
+   wire RAM_CLK_buf;
+   wire clk_to_mac_buf;
+   wire clk125_ext_clk0;
+   wire clk125_ext_clk180;
+   wire clk125_ext_clk0_buf;
+   wire clk125_ext_clk180_buf;
+   wire clk125_int_buf;
+   wire clk125_int;
+   
+   IBUFG clk_to_mac_buf_i1 (.I(clk_to_mac), 
+			    .O(clk_to_mac_buf));
+   
+   DCM DCM_INST1 (.CLKFB(RAM_CLK_buf), 
+                  .CLKIN(clk_to_mac_buf), 
+                  .DSSEN(1'b0), 
+                  .PSCLK(1'b0), 
+                  .PSEN(1'b0), 
+                  .PSINCDEC(1'b0), 
+                  .RST(1'b0), 
+                  .CLK0(clk125_ext_clk0), 
+                  .CLK180(clk125_ext_clk180) );
+   defparam DCM_INST1.CLK_FEEDBACK = "1X";
+   defparam DCM_INST1.CLKDV_DIVIDE = 2.0;
+   defparam DCM_INST1.CLKFX_DIVIDE = 1;
+   defparam DCM_INST1.CLKFX_MULTIPLY = 4;
+   defparam DCM_INST1.CLKIN_DIVIDE_BY_2 = "FALSE";
+   defparam DCM_INST1.CLKIN_PERIOD = 8.000;
+   defparam DCM_INST1.CLKOUT_PHASE_SHIFT = "FIXED";
+   defparam DCM_INST1.DESKEW_ADJUST = "SYSTEM_SYNCHRONOUS";
+   defparam DCM_INST1.DFS_FREQUENCY_MODE = "LOW";
+   defparam DCM_INST1.DLL_FREQUENCY_MODE = "LOW";
+   defparam DCM_INST1.DUTY_CYCLE_CORRECTION = "TRUE";
+   defparam DCM_INST1.FACTORY_JF = 16'h8080;
+   defparam DCM_INST1.PHASE_SHIFT = -64;
+   defparam DCM_INST1.STARTUP_WAIT = "FALSE";
+   
+   IBUFG RAM_CLK_buf_i1 (.I(RAM_CLK), 
+			 .O(RAM_CLK_buf));
+   BUFG  clk125_ext_clk0_buf_i1 (.I(clk125_ext_clk0), 
+				   .O(clk125_ext_clk0_buf));
+   BUFG  clk125_ext_clk180_buf_i1 (.I(clk125_ext_clk180), 
+				   .O(clk125_ext_clk180_buf));
+
+   OFDDRRSE RAM_CLK_i1 (.Q(RAM_CLK),
+			.C0(clk125_ext_clk0_buf),
+			.C1(clk125_ext_clk180_buf),
+			.CE(1'b1),
+			.D0(1'b1),
+			.D1(1'b0),
+			.R(1'b0),
+			.S(1'b0));
+
+//   SRL16 dcm2_rst_i1 (.D(1'b0),
+//		      .CLK(clk_to_mac_buf),
+//		      .Q(dcm2_rst),
+//		      .A0(1'b1),
+//		      .A1(1'b1),
+//		      .A2(1'b1),
+//		      .A3(1'b1));
+   // synthesis attribute init of dcm2_rst_i1 is "000F";
+      
+   DCM DCM_INST2 (.CLKFB(clk125_int_buf), 
+                  .CLKIN(clk_to_mac_buf), 
+                  .DSSEN(1'b0), 
+                  .PSCLK(1'b0), 
+                  .PSEN(1'b0), 
+                  .PSINCDEC(1'b0), 
+                  .RST(1'b0),
+                  .CLK0(clk125_int));
+   defparam DCM_INST2.CLK_FEEDBACK = "1X";
+   defparam DCM_INST2.CLKDV_DIVIDE = 2.0;
+   defparam DCM_INST2.CLKFX_DIVIDE = 1;
+   defparam DCM_INST2.CLKFX_MULTIPLY = 4;
+   defparam DCM_INST2.CLKIN_DIVIDE_BY_2 = "FALSE";
+   defparam DCM_INST2.CLKIN_PERIOD = 8.000;
+   defparam DCM_INST2.CLKOUT_PHASE_SHIFT = "NONE";
+   defparam DCM_INST2.DESKEW_ADJUST = "SYSTEM_SYNCHRONOUS";
+   defparam DCM_INST2.DFS_FREQUENCY_MODE = "LOW";
+   defparam DCM_INST2.DLL_FREQUENCY_MODE = "LOW";
+   defparam DCM_INST2.DUTY_CYCLE_CORRECTION = "TRUE";
+   defparam DCM_INST2.FACTORY_JF = 16'h8080;
+   defparam DCM_INST2.PHASE_SHIFT = 0;
+   defparam DCM_INST2.STARTUP_WAIT = "FALSE";
+  
+   BUFG clk125_int_buf_i1 (.I(clk125_int), 
+                           .O(clk125_int_buf));
+   
+   //
+   // DCM edits end here
+   //
+   
+   
+   u2_core
+     u2_core(.dsp_clk           (dsp_clk),
+	     .wb_clk            (wb_clk),
+	     .clock_ready       (clock_ready),
+	     .clk_to_mac	(clk125_int_buf),
+	     .pps_in		(pps_in),
+	     .leds		(leds_int),
+	     .debug		(debug[31:0]),
+	     .debug_clk		(debug_clk[1:0]),
+	     .exp_time_in	(exp_time_in),
+	     .exp_time_out	(exp_time_out),
+	     .GMII_COL		(GMII_COL),
+	     .GMII_CRS		(GMII_CRS),
+	     .GMII_TXD		(GMII_TXD_unreg[7:0]),
+	     .GMII_TX_EN	(GMII_TX_EN_unreg),
+	     .GMII_TX_ER	(GMII_TX_ER_unreg),
+	     .GMII_GTX_CLK	(GMII_GTX_CLK_int),
+	     .GMII_TX_CLK	(GMII_TX_CLK),
+	     .GMII_RXD		(GMII_RXD[7:0]),
+	     .GMII_RX_CLK	(GMII_RX_CLK),
+	     .GMII_RX_DV	(GMII_RX_DV),
+	     .GMII_RX_ER	(GMII_RX_ER),
+	     .MDIO		(MDIO),
+	     .MDC		(MDC),
+	     .PHY_INTn		(PHY_INTn),
+	     .PHY_RESETn	(PHY_RESETn),
+	     .ser_enable	(ser_enable),
+	     .ser_prbsen	(ser_prbsen),
+	     .ser_loopen	(ser_loopen),
+	     .ser_rx_en		(ser_rx_en),
+	     .ser_tx_clk	(ser_tx_clk_int),
+	     .ser_t		(ser_t_unreg[15:0]),
+	     .ser_tklsb		(ser_tklsb_unreg),
+	     .ser_tkmsb		(ser_tkmsb_unreg),
+	     .ser_rx_clk	(ser_rx_clk_buf),
+	     .ser_r		(ser_r_int[15:0]),
+	     .ser_rklsb		(ser_rklsb_int),
+	     .ser_rkmsb		(ser_rkmsb_int),
+	     .cpld_start        (cpld_start),
+	     .cpld_mode         (cpld_mode),
+	     .cpld_done         (cpld_done),
+	     .cpld_din          (cpld_din),
+	     .cpld_clk          (cpld_clk),
+	     .cpld_detached     (cpld_detached),
+	     .cpld_misc         (cpld_misc),
+	     .cpld_init_b       (cpld_init_b),
+	     .por               (~POR),
+	     .config_success    (config_success),
+	     .adc_a		(adc_a_reg2),
+	     .adc_ovf_a		(adc_ovf_a_reg2),
+	     .adc_on_a		(adc_on_a),
+	     .adc_oe_a		(adc_oe_a),
+	     .adc_b		(adc_b_reg2),
+	     .adc_ovf_b		(adc_ovf_b_reg2),
+	     .adc_on_b		(adc_on_b),
+	     .adc_oe_b		(adc_oe_b),
+	     .dac_a		(dac_a_int),
+	     .dac_b		(dac_b_int),
+	     .scl_pad_i		(scl_pad_i),
+	     .scl_pad_o		(scl_pad_o),
+	     .scl_pad_oen_o	(scl_pad_oen_o),
+	     .sda_pad_i		(sda_pad_i),
+	     .sda_pad_o		(sda_pad_o),
+	     .sda_pad_oen_o	(sda_pad_oen_o),
+	     .clk_en		(clk_en[1:0]),
+	     .clk_sel		(clk_sel[1:0]),
+	     .clk_func		(clk_func),
+	     .clk_status	(clk_status),
+	     .sclk		(sclk_int),
+	     .mosi		(mosi),
+	     .miso		(miso),
+	     .sen_clk		(sen_clk),
+	     .sen_dac		(sen_dac),
+	     .sen_tx_db		(sen_tx_db),
+	     .sen_tx_adc	(sen_tx_adc),
+	     .sen_tx_dac	(sen_tx_dac),
+	     .sen_rx_db		(sen_rx_db),
+	     .sen_rx_adc	(sen_rx_adc),
+	     .sen_rx_dac	(sen_rx_dac),
+	     .io_tx		(io_tx[15:0]),
+	     .io_rx		(io_rx[15:0]),
+	     .RAM_D_pi             (RAM_D_pi),
+	     .RAM_D_po             (RAM_D_po),
+	     .RAM_D_poe             (RAM_D_poe),
+	     .RAM_A             (RAM_A),
+	     .RAM_CE1n          (RAM_CE1n),
+	     .RAM_CENn          (RAM_CENn),
+	//     .RAM_CLK           (RAM_CLK),
+	     .RAM_WEn           (RAM_WEn),
+	     .RAM_OEn           (RAM_OEn),
+	     .RAM_LDn           (RAM_LDn), 
+	     .uart_tx_o         (uart_tx_o),
+	     .uart_rx_i         (uart_rx_i),
+	     .uart_baud_o       (),
+	     .sim_mode          (1'b0),
+	     .clock_divider     (2)
+	     );
+   
+endmodule // u2_rev2