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- CLKF
- Overview
- This keyword identifies which clock is used for the synchronized
- operation of the state machine.
-
-
- Syntax───────────────────────────────────────────────────────────────
-
- CLKF Assignment Operator Clock_Pin
-
- ─────────────────────────────────────────────────────────────────────
-
- Device Support:
-
- PAL26V12 PALCE29M16 PALCE29MA16 PALCE610
- PLS30S16 MACH 1 MACH 2
- ·
- Syntax
- You can use this statement only in the state segment of state-machine
- designs.
-
- Syntax───────────────────────────────────────────────────────────────
-
- CLKF Assignment Operator Clock_Pin
-
- Example──────────────────────────────────────────────────────────────
-
- CLKF = CLK1
-
- ─────────────────────────────────────────────────────────────────────
- ·
- Definitions
-
- Assignment A symbol that defines a specific operation as
- Operator interpreted by the software when processing design
- files.
-
- Clock_Pin The pin you define as the clock source for the state
- machine.
-
- ■ Specify the name exactly as it's defined in the pin
- statement in the declaration segment.
-
- ■ Place a slash, /, before the equation to select a
- falling edge clock. For example,
-
- /CLKF = CLK1
-
- Note: To define a falling edge clock for PAL29M16,
- you must use NCLKF instead of the polarity
- slash, /.
- ·
- Use
- Without a CLKF equation, you cannot specify a non-default clock pin if
- you use automatic state-bit assignment.
-
- This equation creates clock assignments both for state bits and output
- registers.
- ·
- Related Topics
- Boolean Equation
- .CLKF
- ·
-