Clock Gating Network for Low-Power OPIO Bandwidth Readiness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional I/O interfaces in multi-component packages (MCPs) face challenges in reducing power consumption while maintaining high bandwidth and low latency, as they are not optimized for selective clock signal distribution, leading to inefficiencies in power usage and area requirements.
Innovation Solution
The implementation of an On-Package I/O (OPIO) interface with single-ended, high-speed CMOS interfaces, impedance-tuned transmitters and receivers, length-matched routing for forwarded clock signals, and reduced electrostatic discharge protection, allowing for selective disabling of clock signals to reduce power consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional I/O interfaces continuously distribute clock signals to maintain high bandwidth capability, then bandwidth readiness is improved, but power consumption increases
Solution Approach 1:
The clock signal distribution system dynamically adjusts its operational state based on actual data transfer needs. Clock signals are continuously distributed when high bandwidth is required, and selectively disabled when bandwidth demand is low, allowing the system to adapt between performance and power efficiency modes
Solution Approach 2:
The system implements periodic assessment of bandwidth requirements and adjusts clock signal distribution accordingly. Clock signals are enabled during active data transfer periods and disabled during idle periods, creating a rhythmic pattern of high-performance and low-power states that matches actual operational demands
2Speed
If clock signals are continuously distributed to maintain interface readiness, then data transfer speed is improved, but area requirements increase
Solution Approach 1:
The interface infrastructure is designed to be dynamically configurable, allowing clock signal paths to be enabled or disabled based on active data transfer requirements. This dynamic configuration reduces the area occupied by clock distribution infrastructure when full bandwidth capability is not needed
3Use of energy by moving object
If clock signals are selectively disabled to reduce power consumption, then power efficiency is improved, but latency increases
Solution Approach 1:
The system performs preliminary assessment of bandwidth requirements and proactively enables clock signal distribution before data transfer begins. This preliminary action ensures that when data transfer is needed, the clock signals are already distributed, avoiding latency penalties while maintaining power efficiency during idle periods
Data Source
AI summary
Mechanisms for clock gating. A clock generation circuit provides a clock signal over a clock signal distribution network within an integrated circuit package. Gating elements within the clock signal distribution network disable the clock signal to one or more portions of the clock signal distribution network. A digital locked loop (DLL) maintains settings without tracking when the clock signal is disabled.