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- .CMBF
- Overview
- This reserved word in a functional equation allows you to customize
- a flip-flop for dynamic register bypass.
-
-
- Syntax───────────────────────────────────────────────────────────────
- Pn.CMBF Assignment Operator Expression
-
- ─────────────────────────────────────────────────────────────────────
-
- Device Support: PAL32VX10
- ·
- Syntax
-
- You include this functional equation only in the equations segment of
- either Boolean or state designs.
-
- Syntax───────────────────────────────────────────────────────────────
- Pn.CMBF Assignment Operator Expression
-
- Example──────────────────────────────────────────────────────────────
- OUT1.CMBF = IN4 * /IN3
- ─────────────────────────────────────────────────────────────────────
- ·
- Definitions
-
- Pn.CMBF A pin or node name followed by the reserved word,
- .CMBF. The name must be defined in an earlier pin or
- node statement in the declaration segment.
-
- ■ You cannot use negative polarity on the left side
- of the equation.
-
- ■ You can use the group, string, and vector notation
- features to define signals, which is an excellent
- way to assign this statement to several pins and
- nodes.
-
- Assignment A symbol that defines a specific operation as
- Operator interpreted by the software when processing design
- files.
-
- Expression Identifies the logic that you assign to define the
- flip-flop that's to be bypassed. In the syntax
- example, when IN4 and /IN3 are true, OUT1 is true and
- the flip-flop associated with OUT1 is bypassed.
- ·
- Use
- The .CMBF statement overrides the pin or node type you defined as
- registered in the pin and node statement in the declaration segment.
- The default case is set to combinatorial.
-
- If you have multiple functional equations for the same pin or node, an
- error occurs during assembly.
- ·
- Related Topics
- Boolean Equation
- COMBINATORIAL
- EXPRESSION
- Functional Equation
- REGISTERED
- ·
-