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White Rabbit core collection
Commit 4f86239f authored by Grzegorz Daniluk's avatar Grzegorz Daniluk
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spec_top: dedicated clock for gtp transceiver

parent 3bdd3c88
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Showing with 35 additions and 5 deletions
top/spec_1_1/wr_core_demo/spec_top.ucf
View file @ 4f86239f
......@@ -8,6 +8,13 @@ NET "clk_125m_pllref_n_i" IOSTANDARD = "LVDS_25";
NET "clk_125m_pllref_p_i" LOC = G9;
NET "clk_125m_pllref_p_i" IOSTANDARD = "LVDS_25";
NET "fpga_pll_ref_clk_101_n_i" LOC = D11;
NET "fpga_pll_ref_clk_101_n_i" IOSTANDARD = "LVDS_25";
NET "fpga_pll_ref_clk_101_p_i" LOC = C11;
NET "fpga_pll_ref_clk_101_p_i" IOSTANDARD = "LVDS_25";
NET "dac_cs1_n_o" LOC = A3;
NET "dac_cs1_n_o" IOSTANDARD = "LVCMOS25";
......@@ -621,6 +628,10 @@ NET "clk_125m_pllref_p_i" TNM_NET = clk_125m_pllref_p_i;
TIMESPEC TS_clk_125m_pllref_p_i = PERIOD "clk_125m_pllref_p_i" 8 ns HIGH 50%;
NET "clk_125m_pllref_n_i" TNM_NET = clk_125m_pllref_n_i;
TIMESPEC TS_clk_125m_pllref_n_i = PERIOD "clk_125m_pllref_n_i" 8 ns HIGH 50%;
NET "fpga_pll_ref_clk_101_p_i" TNM_NET = fpga_pll_ref_clk_101_p_i;
TIMESPEC TS_fpga_pll_ref_clk_101_p_i = PERIOD "fpga_pll_ref_clk_101_p_i" 8 ns HIGH 50%;
NET "fpga_pll_ref_clk_101_n_i" TNM_NET = fpga_pll_ref_clk_101_n_i;
TIMESPEC TS_fpga_pll_ref_clk_101_n_i = PERIOD "fpga_pll_ref_clk_101_n_i" 8 ns HIGH 50%;
PIN "clk_125m_pllref_BUFG.O" CLOCK_DEDICATED_ROUTE = FALSE;
PIN "U_GTP/U_Rbclk_bufg_ch1.O" CLOCK_DEDICATED_ROUTE = FALSE;
......
top/spec_1_1/wr_core_demo/spec_top.vhd
View file @ 4f86239f
......@@ -28,6 +28,9 @@ entity spec_top is
clk_125m_pllref_p_i : in std_logic; -- 125 MHz PLL reference
clk_125m_pllref_n_i : in std_logic;
fpga_pll_ref_clk_101_p_i : in std_logic; -- Dedicated clock for Xilinx GTP transceiver
fpga_pll_ref_clk_101_n_i : in std_logic;
-- From GN4124 Local bus
L_CLKp : in std_logic; -- Local bus clock (frequency set in GN4124 config registers)
L_CLKn : in std_logic; -- Local bus clock (frequency set in GN4124 config registers)
......@@ -319,8 +322,8 @@ architecture rtl of spec_top is
g_ch0_use_refclk_out : boolean := false;
g_ch1_use_refclk_out : boolean := false);
port (
gtp_clk_i : in std_logic;
ch0_ref_clk_i : in std_logic;
ch0_ref_clk_o : out std_logic;
ch0_tx_data_i : in std_logic_vector(7 downto 0);
ch0_tx_k_i : in std_logic;
ch0_tx_disparity_o : out std_logic;
......@@ -333,7 +336,6 @@ architecture rtl of spec_top is
ch0_rst_i : in std_logic;
ch0_loopen_i : in std_logic;
ch1_ref_clk_i : in std_logic;
ch1_ref_clk_o : out std_logic;
ch1_tx_data_i : in std_logic_vector(7 downto 0) := "00000000";
ch1_tx_k_i : in std_logic := '0';
ch1_tx_disparity_o : out std_logic;
......@@ -409,6 +411,9 @@ architecture rtl of spec_top is
-- LCLK from GN4124 used as system clock
signal l_clk : std_logic;
-- Dedicated clock for GTP transceiver
signal gtp_dedicated_clk : std_logic;
-- P2L colck PLL status
signal p2l_pll_locked : std_logic;
......@@ -643,6 +648,20 @@ begin
);
------------------------------------------------------------------------------
-- Dedicated clock for GTP
------------------------------------------------------------------------------
cmp_gtp_dedicated_clk_buf : IBUFGDS
generic map(
DIFF_TERM => true,
IBUF_LOW_PWR => true,
IOSTANDARD => "DEFAULT")
port map (
O => gtp_dedicated_clk,
I => fpga_pll_ref_clk_101_p_i,
IB => fpga_pll_ref_clk_101_n_i
);
------------------------------------------------------------------------------
-- Active high reset
......@@ -761,7 +780,7 @@ begin
g_aux_clks => 1,
g_ep_rxbuf_size => 1024,
g_dpram_initf => "",
g_dpram_size => 20480, --16384,
g_dpram_size => 20480, --16384,
g_interface_mode => PIPELINED,
g_address_granularity => WORD)
port map (
......@@ -875,8 +894,9 @@ begin
generic map (
g_simulation => 0)
port map (
gtp_clk_i => gtp_dedicated_clk,
ch0_ref_clk_i => clk_125m_pllref,
ch0_ref_clk_o => open,
ch0_tx_data_i => x"00",
ch0_tx_k_i => '0',
ch0_tx_disparity_o => open,
......@@ -890,7 +910,6 @@ begin
ch0_loopen_i => '0',
ch1_ref_clk_i => clk_125m_pllref,
ch1_ref_clk_o => open,
ch1_tx_data_i => phy_tx_data,
ch1_tx_k_i => phy_tx_k,
ch1_tx_disparity_o => phy_tx_disparity,
......
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