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[/] [System09/] [trunk/] [rtl/] [Cyclone2/] [rom2k.vhd] - Rev 221
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LIBRARY ieee; USE ieee.std_logic_1164.all; LIBRARY altera_mf; USE altera_mf.all; ENTITY sprom IS GENERIC ( INIT_FILE : string := ""; WORD_COUNT : natural := 2048; ADDR_WIDTH : natural := 11; DATA_WIDTH : natural := 8; REG_OUT : string := "UNREGISTERED" ); PORT ( clk : IN STD_LOGIC ; addr : IN STD_LOGIC_VECTOR (ADDR_WIDTH-1 DOWNTO 0); wren : IN STD_LOGIC ; data_in : IN STD_LOGIC_VECTOR (DATA_WIDTH-1 DOWNTO 0); data_out : OUT STD_LOGIC_VECTOR (DATA_WIDTH-1 DOWNTO 0) ); END sprom; ARCHITECTURE SYN OF sprom IS COMPONENT altsyncram GENERIC ( clock_enable_input_a : STRING; clock_enable_output_a : STRING; init_file : STRING; intended_device_family : STRING; lpm_hint : STRING; lpm_type : STRING; numwords_a : NATURAL; operation_mode : STRING; outdata_aclr_a : STRING; outdata_reg_a : STRING; power_up_uninitialized : STRING; widthad_a : NATURAL; width_a : NATURAL; width_byteena_a : NATURAL ); PORT ( clock0 : IN STD_LOGIC ; wren_a : IN STD_LOGIC ; address_a : IN STD_LOGIC_VECTOR (ADDR_WIDTH-1 DOWNTO 0); data_a : IN STD_LOGIC_VECTOR (DATA_WIDTH-1 DOWNTO 0); q_a : OUT STD_LOGIC_VECTOR (DATA_WIDTH-1 DOWNTO 0) ); END COMPONENT; BEGIN wren <= cs and not rw; altsyncram_component : altsyncram GENERIC MAP ( clock_enable_input_a => "BYPASS", clock_enable_output_a => "BYPASS", init_file => INIT_FILE, intended_device_family => "Cyclone II", lpm_hint => "ENABLE_RUNTIME_MOD=NO", lpm_type => "altsyncram", numwords_a => WORD_COUNT, operation_mode => "ROM", outdata_aclr_a => "NONE", outdata_reg_a => REG_OUT, power_up_uninitialized => "FALSE", widthad_a => ADDR_WIDTH, width_a => DATA_WIDTH, width_byteena_a => 1 ) PORT MAP ( wren_a => wren, clock0 => clk, address_a => addr, data_a => data_in, q_a => data_out ); END SYN;
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