Clock Buffer Delay Tuning for Multi-Core Frequency and Yield

The patent implements dynamic clock delay adjustment by making the delay mechanism controllable and switchable. The system can enable clock delays when operating at high frequencies to compensate for manufacturing variations, and disable them when operating at low speeds or low voltages. This dynamic adaptation resolves the contradiction by allowing the system to optimize for high-frequency performance only when needed, while maintaining acceptable operation at lower frequencies.

The patent applies local quality by implementing clock delays selectively rather than universally. Instead of applying fixed delays to all cores regardless of their actual performance characteristics, the system identifies specific cores that benefit from delay compensation and applies delays only to those cores. This selective approach maintains high processing speed for optimized cores while preserving the yield of other cores that do not require delay compensation.

The system dynamically adjusts clock delays based on operating conditions, enabling delays only when high-frequency operation is required. During low-frequency or low-voltage operation, the delays are disabled, preventing the minimum delay issues that would otherwise force higher voltage operation and increased power consumption. This dynamic control allows the system to achieve maximum frequency when needed while conserving power during normal operation.