i2c_control.vhd

infra pen controller, cmos sensor control and sdram control

--============================================================================
-- Project 		: Video Capture Control
-- Programmer	: Byungchan Son
-- Function		: I2C Bus Control - I2C 滚胶 力绢
-- Language		: VHDL
--============================================================================
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
use ieee.numeric_std.all;
--============================================================================
-- 涝免仿 器飘 沥狼
--============================================================================
entity i2c_control is
	port(
		-- 矫胶袍 脚龋
		reset : in std_logic;
		clock : in std_logic;
		-- data control
		write_addr : in std_logic_vector(11 downto 0);
		write_data : in std_logic_vector(7 downto 0);
		read_data : out std_logic_vector(7 downto 0);
		write_data_req : in std_logic;
		write_data_ack : out std_logic;
		read_data_req : in std_logic;
		read_data_ack : out std_logic;
		-- I2C line
		i2c_scl : out std_logic;
		i2c_sda_in : in std_logic;
		i2c_sda_out : out std_logic;
		i2c_sda_enable : out std_logic
		);
end i2c_control;
--============================================================================
-- 备炼 沥狼