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Altera_Forum
Honored Contributor
16 years agoHow to implement this logic in one Marocell?
Hello: The macrocell has 1 register. How many product terms of 1 macrocell? 16? And a ring lcells can be implemented inside 1 macrocell? Can 1 register plus 1 lcell be implemented ...
Altera_Forum
Honored Contributor
16 years agoIt's not possible. The longest logic cell delay times can be achieved with CPLD by routing a signal to a spare I/O pin and reading it back through the input buffer. You know about the achievable delay range. External RC or LC delay circuits are another option if synchronous counters or shift registers can't be used.