wbi2cparams.vhd

来自「Routine for I2C in VHDL」· VHDL 代码 · 共 39 行

--	Package File Template
--
--	Purpose: This package defines supplemental types, subtypes, 
--		 constants, and functions 
--
-- $Id: WBi2cParams.vhd 356 2007-11-02 15:22:13Z mafgani $

library IEEE;
use IEEE.STD_LOGIC_1164.all;

package WBi2cParams is

-- Declare constants

   -- Addresses of core registers
   constant PRER_LO  : std_logic_vector(2 downto 0) := b"000";
   constant PRER_HI  : std_logic_vector(2 downto 0) := b"001";
   constant CTR      : std_logic_vector(2 downto 0) := b"010";
   constant TXR      : std_logic_vector(2 downto 0) := b"011";
   constant RXR      : std_logic_vector(2 downto 0) := b"011";
   constant CR       : std_logic_vector(2 downto 0) := b"100";
   constant SR       : std_logic_vector(2 downto 0) := b"100";
   
   constant RD       : std_logic := '1';
   constant WR       : std_logic := '0';
   
   -- Address of the SLAVE I2C device -> EEPROM model
   constant SADR     : std_logic_vector(6 downto 0) := b"1010000";
   
   -- Clock period (100MHz)
   constant PERIOD   : time := 10ns;

end WBi2cParams;


package body WBi2cParams is

end WBi2cParams;