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Line 81... |
signal c_transfer_size_rom : std_logic_vector(31 downto 0) := x"0000000E";
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signal c_transfer_size_rom : std_logic_vector(31 downto 0) := x"0000000E";
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-- we will transmitt 1 MiB data when the pseude random number generator
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-- we will transmitt 1 MiB data when the pseude random number generator
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-- is used:
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-- is used:
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--signal c_transfer_size_prng : std_logic_vector(31 downto 0) := x"00100000";
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--signal c_transfer_size_prng : std_logic_vector(31 downto 0) := x"00100000";
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signal c_transfer_size_prng : std_logic_vector(31 downto 0) := x"00000FA0";
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signal c_transfer_size_prng : std_logic_vector(31 downto 0) := x"00000001";
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-----------------------------------------------------------------------------
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-----------------------------------------------------------------------------
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-- COMPONENTS
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-- COMPONENTS
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-----------------------------------------------------------------------------
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-----------------------------------------------------------------------------
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Line 334... |
send_counter : process (i_sysclk, i_nReset)
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send_counter : process (i_sysclk, i_nReset)
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begin -- process send_counter
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begin -- process send_counter
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if i_nReset = '0' then -- asynchronous reset (active low)
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if i_nReset = '0' then -- asynchronous reset (active low)
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s_send_counter_value <= (others => '0');
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s_send_counter_value <= (others => '0');
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elsif i_sysclk'event and i_sysclk = '1' then -- rising clock edge
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elsif i_sysclk'event and i_sysclk = '1' then -- rising clock edge
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if s_send_counter_reset = '1' then
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if s_send_counter_reset = '1' and s_send_counter_en = '0' then
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s_send_counter_value <= (others => '0');
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s_send_counter_value <= (others => '0');
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end if;
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end if;
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if s_send_counter_en = '1' then
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if s_send_counter_reset = '0' and s_send_counter_en = '1' then
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s_send_counter_value(31 downto 2) <=
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s_send_counter_value(31 downto 2) <=
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s_send_counter_value(31 downto 2) + 1;
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s_send_counter_value(31 downto 2) + 1;
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s_send_counter_value(1 downto 0) <= "00"; -- every fifo write (32bit)
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s_send_counter_value(1 downto 0) <= "00"; -- every fifo write (32bit)
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-- transfers 4 bytes.
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-- transfers 4 bytes.
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end if;
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end if;
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end if;
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end if;
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end process send_counter;
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end process send_counter;
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-- transfer size counter comparator
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-- transfer size counter comparator
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s_send_counter_equals_transfer_size <=
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s_send_counter_equals_transfer_size <=
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'1' when s_send_counter_value >= s_send_transfersize else
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'1' when s_send_counter_value > s_send_transfersize else
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'0';
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'0';
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-- purpose: subracts the send counter end value from the remaining transfer size value
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-- purpose: subracts the send counter end value from the remaining transfer size value
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-- type : combinational
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-- type : combinational
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