diff options
Diffstat (limited to 'usrp2/top')
| -rwxr-xr-x | usrp2/top/u2_rev3/u2_core.v | 2 | ||||
| -rw-r--r-- | usrp2/top/u2_rev3/u2_core_udp.v | 4 | ||||
| -rw-r--r-- | usrp2/top/u2_rev3/u2_rev3.ucf | 1 | ||||
| -rw-r--r-- | usrp2/top/u2_rev3/u2_rev3.v | 99 |
4 files changed, 101 insertions, 5 deletions
diff --git a/usrp2/top/u2_rev3/u2_core.v b/usrp2/top/u2_rev3/u2_core.v index 9ba3cc136..a5963f6b1 100755 --- a/usrp2/top/u2_rev3/u2_core.v +++ b/usrp2/top/u2_rev3/u2_core.v @@ -123,7 +123,7 @@ module u2_core output [18:0] RAM_A, output RAM_CE1n, output RAM_CENn, - output RAM_CLK, + // output RAM_CLK, output RAM_WEn, output RAM_OEn, output RAM_LDn, diff --git a/usrp2/top/u2_rev3/u2_core_udp.v b/usrp2/top/u2_rev3/u2_core_udp.v index 2682926f6..bcbaa1f30 100644 --- a/usrp2/top/u2_rev3/u2_core_udp.v +++ b/usrp2/top/u2_rev3/u2_core_udp.v @@ -125,7 +125,7 @@ module u2_core output [18:0] RAM_A, output RAM_CE1n, output RAM_CENn, - output RAM_CLK, + // output RAM_CLK, output RAM_WEn, output RAM_OEn, output RAM_LDn, @@ -775,7 +775,7 @@ module u2_core -----/\----- EXCLUDED -----/\----- */ //assign RAM_CLK = wb_clk; - assign RAM_CLK = clk_to_mac; + //assign RAM_CLK = clk_to_mac; // ///////////////////////////////////////////////////////////////////////// diff --git a/usrp2/top/u2_rev3/u2_rev3.ucf b/usrp2/top/u2_rev3/u2_rev3.ucf index bf9569fe4..175fbec8d 100644 --- a/usrp2/top/u2_rev3/u2_rev3.ucf +++ b/usrp2/top/u2_rev3/u2_rev3.ucf @@ -324,6 +324,7 @@ NET "ser_rx_clk" TNM_NET = "ser_rx_clk"; TIMESPEC "TS_ser_rx_clk" = PERIOD "ser_rx_clk" 10 ns HIGH 50 %; NET "cpld_clk" CLOCK_DEDICATED_ROUTE = FALSE; +NET "GMII_RX_CLK" CLOCK_DEDICATED_ROUTE = FALSE; #NET "adc_a<*>" TNM_NET = ADC_DATA_GRP; #NET "adc_b<*>" TNM_NET = ADC_DATA_GRP; diff --git a/usrp2/top/u2_rev3/u2_rev3.v b/usrp2/top/u2_rev3/u2_rev3.v index 8d9a18345..e9f8d76eb 100644 --- a/usrp2/top/u2_rev3/u2_rev3.v +++ b/usrp2/top/u2_rev3/u2_rev3.v @@ -370,14 +370,109 @@ module u2_rev3 ); 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(clk125_ext_RST_IN), + .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 = "NONE"; + 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 = 0; + 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_i2 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(clk125_int_RST_IN), + .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 #(.RAM_SIZE(32768)) u2_core(.dsp_clk (dsp_clk), .wb_clk (wb_clk), .clock_ready (clock_ready), - .clk_to_mac (clk_to_mac), + .clk_to_mac (clk125_int_buf), .pps_in (pps_in), .leds (leds_int), .debug (debug[31:0]), @@ -460,7 +555,7 @@ module u2_rev3 .RAM_A (RAM_A), .RAM_CE1n (RAM_CE1n), .RAM_CENn (RAM_CENn), - .RAM_CLK (RAM_CLK), + // .RAM_CLK (RAM_CLK), .RAM_WEn (RAM_WEn), .RAM_OEn (RAM_OEn), .RAM_LDn (RAM_LDn), |