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--

-- Copyright (c) 1994 by AT&T. All rights reserved.

--

-- This source file may be used and distributed without restriction

-- provided that this copyright statement is not removed from the file

-- and that any derivative work contains this copyright notice.

--

-- Package name: ATTRIBUTES

-- File name   : attributes.vhdl

--

-- Updates:

--D  sccsid @(#)attributes.vhdl 1.5 daisy(C) 2/13/95 /files1/SCCS.model/bvhdl/vhdl_packages/dzx/src/s.attributes.vhdl

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package ATTRIBUTES is

  -- Clock attributes:

  -- No need for a attribute indicating what is a clock, since any

  -- signal can be a clock.

  attribute INITIAL_VALUE: CHARACTER; -- only 'L' or 'H'.

  attribute DELAY_TIME: REAL;

  attribute PULSE_WIDTH: REAL;

  attribute TIME_PERIOD: REAL;

  attribute MAX_SKEW: REAL;

  attribute MAX_SKEW_RISING: REAL;

  attribute MAX_SKEW_FALLING: REAL;

  attribute MIN_SKEW: REAL;

  attribute MIN_SKEW_RISING: REAL;

  attribute MIN_SKEW_FALLING: REAL;

  -- Input port attributes:

  attribute ARR_TIME: REAL;

  attribute ARR_TIME_RISING: REAL;

  attribute ARR_TIME_FALLING: REAL;

  attribute ARR_TIME_CLK: STRING;

  attribute ARR_TIME_CLK_RISING: STRING;

  attribute ARR_TIME_CLK_FALLING: STRING;

  attribute DRIVE_STR: REAL;

  attribute DRIVE_STR_RISING: REAL;

  attribute DRIVE_STR_FALLING: REAL;

  attribute SLOPE: REAL;

  attribute SLOPE_RISING: REAL;

  attribute SLOPE_FALLING: REAL;

  -- Output port attributes:

  attribute CAP_LOAD: REAL;

  attribute MAX_REQD_TIME: REAL;

  attribute MIN_REQD_TIME: REAL;

  attribute MAX_REQD_TIME_RISING: REAL;

  attribute MIN_REQD_TIME_RISING: REAL;

  attribute MAX_REQD_TIME_FALLING: REAL;

  attribute MIN_REQD_TIME_FALLING: REAL;

  attribute MAX_REQD_TIME_CLK: STRING;

  attribute MIN_REQD_TIME_CLK: STRING;

  attribute MAX_REQD_TIME_CLK_RISING: STRING;

  attribute MIN_REQD_TIME_CLK_RISING: STRING;

  attribute MAX_REQD_TIME_CLK_FALLING: STRING;

  attribute MIN_REQD_TIME_CLK_FALLING: STRING;

  -- Entity attributes:

  attribute MAX_AREA: REAL;

  -- Merge attribute to collapse hierarchy:

  attribute MERGE: BOOLEAN;

  -- External name attribute:

  attribute EXTNAME: STRING;

  -- Built_in operators attribute:

  attribute BUILT_IN_OPERATORS: BOOLEAN;

  -- Attributes and type for specifying RTL binding and structure info:

  type RTL_LABEL is range 0 to 0;

  attribute RTL_BINDING: STRING;

  attribute RTL_STRUCTURE: STRING;

end ATTRIBUTES;