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-rw-r--r--fpga/usrp2/top/E1x0/timing.ucf14
-rw-r--r--fpga/usrp2/top/E1x0/u1e.v28
-rw-r--r--fpga/usrp2/top/E1x0/u1e_core.v24
3 files changed, 24 insertions, 42 deletions
diff --git a/fpga/usrp2/top/E1x0/timing.ucf b/fpga/usrp2/top/E1x0/timing.ucf
index 8df28c9d3..f94685438 100644
--- a/fpga/usrp2/top/E1x0/timing.ucf
+++ b/fpga/usrp2/top/E1x0/timing.ucf
@@ -2,8 +2,22 @@
NET "CLK_FPGA_P" TNM_NET = "CLK_FPGA_P";
TIMESPEC "TS_clk_fpga_p" = PERIOD "CLK_FPGA_P" 15625 ps HIGH 50 %;
+NET "EM_CLK" TNM_NET = "EM_CLK";
+TIMESPEC "TS_em_clk" = PERIOD "EM_CLK" 12048 ps HIGH 50 %;
+#constrain GPMC IO
+NET "EM_D<*>" MAXDELAY = 5 ns;
+NET "EM_A<*>" MAXDELAY = 5 ns;
+NET "EM_NBE<*>" MAXDELAY = 5 ns;
+NET "EM_NCS4" MAXDELAY = 5 ns;
+NET "EM_NCS6" MAXDELAY = 5 ns;
+NET "EM_NWE" MAXDELAY = 5 ns;
+NET "EM_NOE" MAXDELAY = 5 ns;
+#constrain interrupt lines
+NET "overo_gpio144" MAXDELAY = 5 ns; #have space
+NET "overo_gpio146" MAXDELAY = 5 ns; #have data
+NET "overo_gpio147" MAXDELAY = 5 ns; #have msg/aux spi miso
#NET "adc_a<*>" TNM_NET = ADC_DATA_GRP;
#NET "adc_b<*>" TNM_NET = ADC_DATA_GRP;
diff --git a/fpga/usrp2/top/E1x0/u1e.v b/fpga/usrp2/top/E1x0/u1e.v
index dbd6173f3..ff2e08394 100644
--- a/fpga/usrp2/top/E1x0/u1e.v
+++ b/fpga/usrp2/top/E1x0/u1e.v
@@ -53,32 +53,10 @@ module u1e
// /////////////////////////////////////////////////////////////////////////
// Clocking
- wire clk_fpga, clk_fpga_in;
-
+ wire clk_fpga;
+
IBUFGDS #(.IOSTANDARD("LVDS_33"), .DIFF_TERM("TRUE"))
- clk_fpga_pin (.O(clk_fpga_in),.I(CLK_FPGA_P),.IB(CLK_FPGA_N));
-
- wire clk_2x, dcm_rst, dcm_locked, clk_fb;
- DCM #(.CLK_FEEDBACK ( "1X" ),
- .CLKDV_DIVIDE ( 2 ),
- .CLKFX_DIVIDE ( 2 ),
- .CLKFX_MULTIPLY ( 2 ),
- .CLKIN_DIVIDE_BY_2 ( "FALSE" ),
- .CLKIN_PERIOD ( 15.625 ),
- .CLKOUT_PHASE_SHIFT ( "NONE" ),
- .DESKEW_ADJUST ( "SYSTEM_SYNCHRONOUS" ),
- .DFS_FREQUENCY_MODE ( "LOW" ),
- .DLL_FREQUENCY_MODE ( "LOW" ),
- .DUTY_CYCLE_CORRECTION ( "TRUE" ),
- .FACTORY_JF ( 16'h8080 ),
- .PHASE_SHIFT ( 0 ),
- .STARTUP_WAIT ( "FALSE" ))
- clk_doubler (.CLKFB(clk_fb), .CLKIN(clk_fpga_in), .RST(dcm_rst),
- .DSSEN(0), .PSCLK(0), .PSEN(0), .PSINCDEC(0), .PSDONE(),
- .CLKDV(), .CLKFX(), .CLKFX180(),
- .CLK2X(), .CLK2X180(),
- .CLK0(clk_fb), .CLK90(clk_fpga), .CLK180(), .CLK270(),
- .LOCKED(dcm_locked), .STATUS());
+ clk_fpga_pin (.O(clk_fpga),.I(CLK_FPGA_P),.IB(CLK_FPGA_N));
// /////////////////////////////////////////////////////////////////////////
// SPI
diff --git a/fpga/usrp2/top/E1x0/u1e_core.v b/fpga/usrp2/top/E1x0/u1e_core.v
index 8cd51fc10..20dd98a36 100644
--- a/fpga/usrp2/top/E1x0/u1e_core.v
+++ b/fpga/usrp2/top/E1x0/u1e_core.v
@@ -36,7 +36,7 @@ module u1e_core
output [13:0] tx_i, output [13:0] tx_q,
input [11:0] rx_i, input [11:0] rx_q,
- input pps_in, output proc_int
+ input pps_in, output reg proc_int
);
localparam TXFIFOSIZE = 13;
@@ -60,7 +60,7 @@ module u1e_core
localparam SR_CLEAR_TX_FIFO = 62; // 1 reg
localparam SR_GLOBAL_RESET = 63; // 1 reg
- wire [7:0] COMPAT_NUM = 8'd5;
+ wire [7:0] COMPAT_NUM = 8'd6;
wire wb_clk = clk_fpga;
wire wb_rst, global_reset;
@@ -102,10 +102,7 @@ module u1e_core
wire [35:0] tx_data, rx_data, tx_err_data;
wire tx_src_rdy, tx_dst_rdy, rx_src_rdy, rx_dst_rdy,
tx_err_src_rdy, tx_err_dst_rdy;
- reg [15:0] tx_frame_len;
- wire [15:0] rx_frame_len;
- wire bus_error;
wire clear_tx, clear_rx;
setting_reg #(.my_addr(SR_CLEAR_RX_FIFO), .width(1)) sr_clear_rx
@@ -116,14 +113,13 @@ module u1e_core
(.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
.in(set_data),.out(),.changed(clear_tx));
- gpmc_async #(.TXFIFOSIZE(TXFIFOSIZE), .RXFIFOSIZE(RXFIFOSIZE))
+ gpmc #(.TXFIFOSIZE(TXFIFOSIZE), .RXFIFOSIZE(RXFIFOSIZE))
gpmc (.arst(wb_rst),
.EM_CLK(EM_CLK), .EM_D(EM_D), .EM_A(EM_A), .EM_NBE(EM_NBE),
.EM_WAIT0(EM_WAIT0), .EM_NCS4(EM_NCS4), .EM_NCS6(EM_NCS6), .EM_NWE(EM_NWE),
.EM_NOE(EM_NOE),
.rx_have_data(rx_have_data), .tx_have_space(tx_have_space),
- .bus_error(bus_error), .bus_reset(0),
.wb_clk(wb_clk), .wb_rst(wb_rst),
.wb_adr_o(m0_adr), .wb_dat_mosi(m0_dat_mosi), .wb_dat_miso(m0_dat_miso),
@@ -133,8 +129,7 @@ module u1e_core
.fifo_clk(wb_clk), .fifo_rst(wb_rst), .clear_tx(clear_tx), .clear_rx(clear_rx),
.tx_data_o(tx_data), .tx_src_rdy_o(tx_src_rdy), .tx_dst_rdy_i(tx_dst_rdy),
.rx_data_i(rx_data), .rx_src_rdy_i(rx_src_rdy), .rx_dst_rdy_o(rx_dst_rdy),
-
- .tx_frame_len(tx_frame_len), .rx_frame_len(rx_frame_len),
+
.tx_underrun(tx_underrun_gpmc), .rx_overrun(rx_overrun_gpmc),
.test_rate(test_rate), .test_ctrl(test_ctrl),
@@ -313,8 +308,6 @@ module u1e_core
localparam REG_CGEN_CTRL = 7'd4; // out
localparam REG_CGEN_ST = 7'd6; // in
localparam REG_TEST = 7'd8; // out
- localparam REG_RX_FRAMELEN = 7'd10; // in
- localparam REG_TX_FRAMELEN = 7'd12; // out
localparam REG_XFER_RATE = 7'd14; // out
localparam REG_COMPAT = 7'd16; // in
@@ -324,7 +317,6 @@ module u1e_core
reg_leds <= 0;
reg_cgen_ctrl <= 2'b11;
reg_test <= 0;
- tx_frame_len <= 0;
xfer_rate <= 0;
end
else
@@ -336,8 +328,6 @@ module u1e_core
reg_cgen_ctrl <= s0_dat_mosi;
REG_TEST :
reg_test <= s0_dat_mosi;
- REG_TX_FRAMELEN :
- tx_frame_len <= s0_dat_mosi;
REG_XFER_RATE :
xfer_rate <= s0_dat_mosi;
endcase // case (s0_adr[6:0])
@@ -352,7 +342,6 @@ module u1e_core
(s0_adr[6:0] == REG_CGEN_CTRL) ? reg_cgen_ctrl :
(s0_adr[6:0] == REG_CGEN_ST) ? {13'b0,cgen_st_status,cgen_st_ld,cgen_st_refmon} :
(s0_adr[6:0] == REG_TEST) ? reg_test :
- (s0_adr[6:0] == REG_RX_FRAMELEN) ? rx_frame_len :
(s0_adr[6:0] == REG_COMPAT) ? { 8'd0, COMPAT_NUM } :
16'hBEEF;
@@ -433,7 +422,7 @@ module u1e_core
// Wishbone interface to RAM
.wb_clk_i(wb_clk), .wb_rst_i(wb_rst),
.wb_we_i(s5_we), .wb_stb_i(s5_stb),
- .wb_adr_i(s5_adr), .wb_dat_i({16'b0, s5_dat_mosi}),
+ .wb_adr_i({5'b0,s5_adr}), .wb_dat_i({16'b0, s5_dat_mosi}),
.wb_dat_o(err_data32), .wb_ack_o(s5_ack),
// Write FIFO Interface
.wr_data_i(_tx_err_data), .wr_ready_i(_tx_err_src_rdy), .wr_ready_o(_tx_err_dst_rdy),
@@ -444,7 +433,8 @@ module u1e_core
////////////////////////////////////////////////////////////////////////////
// Interrupts
- assign proc_int = (|err_status[1:0]);
+ always @(posedge wb_clk)
+ proc_int <= (|err_status[1:0]);
// /////////////////////////////////////////////////////////////////////////
// Settings Bus -- Slave #8 + 9
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 05:43:43 +0000