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White Rabbit core collection
Commit de8b8f69 authored by Tomasz Wlostowski's avatar Tomasz Wlostowski
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wr_softpll_ng: added support for external DDMTD sampler

parent 9b82c600
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Showing with 29 additions and 10 deletions
modules/wr_softpll_ng/wr_softpll_ng.vhd
View file @ de8b8f69
......@@ -84,6 +84,7 @@ entity wr_softpll_ng is
g_ref_clock_rate : integer := 125000000;
g_ext_clock_rate : integer := 10000000;
g_use_sampled_ref_clocks : boolean := false;
g_interface_mode : t_wishbone_interface_mode := PIPELINED;
g_address_granularity : t_wishbone_address_granularity := WORD
......@@ -99,6 +100,9 @@ entity wr_softpll_ng is
-- Reference inputs (i.e. the RX clocks recovered by the PHYs)
clk_ref_i : in std_logic_vector(g_num_ref_inputs-1 downto 0);
-- Reference inputs (i.e. the RX clocks recovered by the PHYs), externally sampled
clk_ref_sampled_i : in std_logic_vector(g_num_ref_inputs-1 downto 0);
-- Feedback clocks (i.e. the outputs of the main or auxillary oscillator)
-- Note: clk_fb_i(0) must be always connected to the primary board's oscillator
-- (i.e. the one driving the PTP and Ethernet PHY) to ensure correct operation
......@@ -169,30 +173,33 @@ architecture rtl of wr_softpll_ng is
constant c_DBG_FIFO_COALESCE : integer := 100;
constant c_BB_ERROR_BITS : integer := 16;
component dmtd_with_deglitcher
component dmtd_with_deglitcher is
generic (
g_counter_bits : natural;
g_chipscope : boolean := false;
g_divide_input_by_2 : boolean;
g_reverse : boolean);
g_reverse : boolean;
g_use_sampled_clock : boolean);
port (
rst_n_dmtdclk_i : in std_logic;
rst_n_sysclk_i : in std_logic;
clk_in_i : in std_logic;
clk_dmtd_i : in std_logic;
clk_sys_i : in std_logic;
clk_sampled_a_i : in std_logic := '0';
resync_p_a_i : in std_logic := '0';
resync_p_o : out std_logic;
resync_start_p_i : in std_logic;
resync_start_p_i : in std_logic := '0';
resync_done_o : out std_logic;
shift_en_i : in std_logic;
shift_dir_i : in std_logic;
shift_en_i : in std_logic := '0';
shift_dir_i : in std_logic := '0';
clk_dmtd_en_i : in std_logic := '1';
deglitch_threshold_i : in std_logic_vector(15 downto 0);
dbg_dmtdout_o : out std_logic;
tag_o : out std_logic_vector(g_counter_bits-1 downto 0);
tag_stb_p1_o : out std_logic;
dbg_clk_d3_o : out std_logic);
end component;
dbg_clk_d3_o : out std_logic);
end component dmtd_with_deglitcher;
component spll_wb_slave
generic (
......@@ -404,7 +411,8 @@ begin -- rtl
generic map (
g_counter_bits => g_tag_bits,
g_divide_input_by_2 => g_divide_input_by_2,
g_reverse => g_reverse_dmtds)
g_reverse => g_reverse_dmtds,
g_use_sampled_clock => g_use_sampled_ref_clocks)
port map (
rst_n_dmtdclk_i => rst_dmtd_n_i,
rst_n_sysclk_i => rst_n_i,
......@@ -414,6 +422,7 @@ begin -- rtl
clk_sys_i => clk_sys_i,
clk_in_i => clk_ref_i(i),
clk_sampled_a_i => clk_ref_sampled_i(i),
resync_done_o => open,
resync_start_p_i => '0',
......@@ -436,7 +445,8 @@ begin -- rtl
generic map (
g_counter_bits => g_tag_bits,
g_divide_input_by_2 => g_divide_input_by_2,
g_reverse => g_reverse_dmtds)
g_reverse => g_reverse_dmtds,
g_use_sampled_clock => false)
port map (
rst_n_dmtdclk_i => rst_dmtd_n_i,
rst_n_sysclk_i => rst_n_i,
......@@ -477,7 +487,8 @@ begin -- rtl
generic map (
g_counter_bits => g_tag_bits,
g_divide_input_by_2 => g_divide_input_by_2,
g_reverse => g_reverse_dmtds)
g_reverse => g_reverse_dmtds,
g_use_sampled_clock => false)
port map (
rst_n_dmtdclk_i => rst_dmtd_n_i,
rst_n_sysclk_i => rst_n_i,
......
modules/wr_softpll_ng/xwr_softpll_ng.vhd
View file @ de8b8f69
......@@ -78,6 +78,8 @@ entity xwr_softpll_ng is
g_ref_clock_rate : integer := 125000000;
g_ext_clock_rate : integer := 10000000;
g_use_sampled_ref_clocks : boolean := false;
g_interface_mode : t_wishbone_interface_mode := PIPELINED;
g_address_granularity : t_wishbone_address_granularity := BYTE
);
......@@ -91,6 +93,10 @@ entity xwr_softpll_ng is
-- Reference inputs (i.e. the RX clocks recovered by the PHYs)
clk_ref_i : in std_logic_vector(g_num_ref_inputs-1 downto 0);
-- Reference inputs (i.e. the RX clocks recovered by the PHYs), externally sampled
clk_ref_sampled_i : in std_logic_vector(g_num_ref_inputs-1 downto 0);
-- Feedback clocks (i.e. the outputs of the main or aux oscillator)
clk_fb_i : in std_logic_vector(g_num_outputs-1 downto 0);
-- DMTD Offset clock
......@@ -148,6 +154,7 @@ architecture wrapper of xwr_softpll_ng is
g_divide_input_by_2 : boolean;
g_ref_clock_rate : integer;
g_ext_clock_rate : integer;
g_use_sampled_ref_clocks : boolean;
g_interface_mode : t_wishbone_interface_mode;
g_address_granularity : t_wishbone_address_granularity);
port (
......@@ -201,6 +208,7 @@ begin -- behavioral
g_with_ext_clock_input => g_with_ext_clock_input,
g_reverse_dmtds => g_reverse_dmtds,
g_divide_input_by_2 => g_divide_input_by_2,
g_use_sampled_ref_clocks => g_use_sampled_ref_clocks,
g_ref_clock_rate => g_ref_clock_rate,
g_ext_clock_rate => g_ext_clock_rate
)
......
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