MRIOV Switch Dynamic Clocking Power Reduction

The patent implements dynamic power management by making the switch operational state dependent on actual traffic needs. The switch transitions between full operational state (all ports active, complete functionality) and reduced power state (ports inactive, minimal functionality) based on whether data packets are being transmitted. This dynamic adaptation allows the switch to maintain I/O device sharing capability when needed while reducing power consumption during idle periods.

The patent changes operational parameters (power state, clock rate, port activity) based on traffic conditions. When no data packets are being transmitted, the switch changes its power parameter from high to low state, adjusts clock rates downward, and deactivates ports. This parameter adjustment resolves the contradiction by allowing the switch to provide full I/O device sharing functionality only when required, rather than continuously consuming high power.

The patent designs the switch to perform multiple functions within a single integrated circuit. The same physical switch infrastructure supports I/O device sharing across multiple hosts, handles data packet routing, performs arbitration, and provides power management all through unified hardware components. This multi-functionality reduces the need for separate dedicated circuits for each function, thereby reducing overall silicon area while maintaining full I/O device sharing capability.

The patent merges multiple switch instances into a single shared MRIOV aware switch infrastructure. Instead of implementing separate switches for different host-I/O device connections, the patent combines them into one switch that handles traffic from multiple hosts to multiple I/O devices through virtualization and arbitration mechanisms. This merging reduces redundant hardware components and minimizes silicon area utilization while preserving comprehensive I/O device sharing functionality.

The patent implements dynamic clock rate configuration that adjusts processing speed based on actual link requirements. When data packets are being transmitted over high-speed links, the clock rate increases to match the required processing speed. When links are inactive or operating at lower speeds, the clock rate decreases accordingly. This dynamic adjustment resolves the contradiction by ensuring processing speed matches actual operational needs, reducing power consumption during low-demand periods while maintaining high processing speed when required.

The patent changes the clock rate parameter dynamically based on negotiated link width and speed parameters. The switch monitors link configuration and adjusts its internal clock rate to match the operational requirements of active connections. This parameter change strategy allows the system to reduce power consumption by lowering clock rates during idle or low-bandwidth periods while maintaining high processing speeds when full-performance links are active.