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White Rabbit core collection
Commit b35d0eb3 authored by Tomasz Wlostowski's avatar Tomasz Wlostowski Committed by Grzegorz Daniluk
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wr_gtx_phy_lp: fixed early link detection FSM

parent 74e929a1
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Showing with 17 additions and 15 deletions
platform/xilinx/wr_gtp_phy/virtex6-low-phase-drift/gtx_comma_detect_lp.vhd
View file @ b35d0eb3
......@@ -27,7 +27,7 @@ architecture rtl of gtx_comma_detect_lp is
type t_state is (SYNC_LOST, SYNC_CHECK, SYNC_ACQUIRED);
constant c_IDLE_LENGTH_UP : integer := 40;
constant c_IDLE_LENGTH_UP : integer := 500;
constant c_IDLE_LENGTH_LOSS : integer := 1000;
constant c_COMMA_SHIFT_WE_WANT : std_logic_vector(6 downto 0) := "0110000";
......@@ -88,11 +88,11 @@ architecture rtl of gtx_comma_detect_lp is
begin
gen1 : if g_id = 0 generate
--chipscope_icon_1 : chipscope_icon
gen1 : if g_id = 5 generate
-- chipscope_icon_1 : chipscope_icon
-- port map (
-- CONTROL0 => CONTROL);
--chipscope_ila_1 : chipscope_ila
-- chipscope_ila_1 : chipscope_ila
-- port map (
-- CONTROL => CONTROL,
-- CLK => clk_rx_i,
......@@ -101,14 +101,15 @@ begin
-- TRIG2 => TRIG2,
-- TRIG3 => TRIG3);
--trig0 (19 downto 0) <= rx_data_raw_i;
--trig1 (19 downto 0) <= comma_found;
--trig0(20) <= comma_pos_valid;
--trig0(21) <= link_up;
--trig0(22) <= link_aligned;
--trig2(15 downto 0) <= rx_data_i;
--trig2(17 downto 16) <= rx_k_i;
--trig2(18) <= rx_error_i;
trig0 (19 downto 0) <= rx_data_raw_i;
trig1 (19 downto 0) <= comma_found;
trig0(20) <= comma_pos_valid;
trig0(21) <= link_up;
trig0(22) <= link_aligned;
trig2(15 downto 0) <= rx_data_i;
trig2(17 downto 16) <= rx_k_i;
trig2(18) <= rx_error_i;
trig3(15 downto 0) <= std_logic_vector(cnt);
end generate gen1;
......@@ -159,11 +160,12 @@ begin
when SYNC_CHECK =>
if comma_pos = first_comma and comma_pos_valid = '1' then
if cnt < 2 * c_IDLE_LENGTH_UP then
cnt <= cnt + 4;
end if;
cnt <= cnt + 4;
elsif cnt > 0 then
cnt <= cnt - 1;
if cnt = 1 then
state <= SYNC_LOST;
end if;
end if;
if cnt >= c_IDLE_LENGTH_UP then
......
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