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diff_decoder : process(reset, clk8x, clk_event_2)
begin
if reset = '0' then
nrz_i_trig <= '0';
elsif clk8x'event and clk8x = '1' then
if clk_event_2 = '1' then
nrz_i_trig <= nrz_i;
end if;
end if;
-- nrz_l_out <= nrz_l;
nrz_l <= nrz_i_trig xor nrz_i;
end process diff_decoder;
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