diff options
Diffstat (limited to 'fpga/usrp2/top/u2_rev3')
| -rw-r--r-- | fpga/usrp2/top/u2_rev3/Makefile | 2 | ||||
| -rw-r--r-- | fpga/usrp2/top/u2_rev3/u2_rev3.ucf | 2 | ||||
| -rw-r--r-- | fpga/usrp2/top/u2_rev3/u2_rev3.v | 15 |
3 files changed, 15 insertions, 4 deletions
diff --git a/fpga/usrp2/top/u2_rev3/Makefile b/fpga/usrp2/top/u2_rev3/Makefile index 1fd8638d9..867fb5cab 100644 --- a/fpga/usrp2/top/u2_rev3/Makefile +++ b/fpga/usrp2/top/u2_rev3/Makefile @@ -199,7 +199,7 @@ top/u2_rev3/u2_rev3.v # Process Properties ################################################## export SYNTHESIZE_PROPERTIES := \ -"Number of Clock Buffers" 6 \ +"Number of Clock Buffers" 8 \ "Pack I/O Registers into IOBs" Yes \ "Optimization Effort" High \ "Optimize Instantiated Primitives" TRUE \ diff --git a/fpga/usrp2/top/u2_rev3/u2_rev3.ucf b/fpga/usrp2/top/u2_rev3/u2_rev3.ucf index 255a298ac..6aa699d2a 100644 --- a/fpga/usrp2/top/u2_rev3/u2_rev3.ucf +++ b/fpga/usrp2/top/u2_rev3/u2_rev3.ucf @@ -331,3 +331,5 @@ NET "cpld_clk" CLOCK_DEDICATED_ROUTE = FALSE; #NET "adc_a<*>" OFFSET = IN 1 ns VALID 5 ns BEFORE "clk_fpga_p" RISING; #NET "adc_b<*>" OFFSET = IN 1 ns VALID 5 ns BEFORE "clk_fpga_p" RISING; + +TIMESPEC "TS_clk_div_to_dsp_clk" = FROM "clk_div" TO "dcm_out" 10 ns; diff --git a/fpga/usrp2/top/u2_rev3/u2_rev3.v b/fpga/usrp2/top/u2_rev3/u2_rev3.v index 23a825007..3a43e4ffe 100644 --- a/fpga/usrp2/top/u2_rev3/u2_rev3.v +++ b/fpga/usrp2/top/u2_rev3/u2_rev3.v @@ -171,8 +171,15 @@ module u2_rev3 wd <= wd + 1; assign WDI = wd[15]; - IBUFGDS clk_fpga_pin (.O(clk_fpga),.I(clk_fpga_p),.IB(clk_fpga_n)); + 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_pps_in; IBUFDS exp_pps_in_pin (.O(exp_pps_in),.I(exp_pps_in_p),.IB(exp_pps_in_n)); @@ -310,7 +317,9 @@ module u2_rev3 reg [15:0] ser_r_int; reg ser_rklsb_int, ser_rkmsb_int; - always @(posedge ser_rx_clk) + 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; @@ -367,7 +376,7 @@ module u2_rev3 .ser_t (ser_t_unreg[15:0]), .ser_tklsb (ser_tklsb_unreg), .ser_tkmsb (ser_tkmsb_unreg), - .ser_rx_clk (ser_rx_clk), + .ser_rx_clk (ser_rx_clk_buf), .ser_r (ser_r_int[15:0]), .ser_rklsb (ser_rklsb_int), .ser_rkmsb (ser_rkmsb_int), |