Shared-Pad Redriver Bias Switching for Low-Voltage 10 Gbps I/O
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional interfaces operating at lower voltages, such as 1.8 volts, face performance issues due to challenges in biasing, leading to decreased transmission/reception rates when sharing input/output pads, necessitating a high-speed, low-voltage, bi-directional channel interface that can effectively utilize shared pads.
Innovation Solution
A low-voltage, bi-directional channel interface is designed with a transmitter and receiver that share input and output pads, utilizing a switching circuit and resistance circuits for selective biasing, allowing for high-speed operation at 1.8 volts with data rates up to 10 Gbps, and the ability to switch between high-speed and power-saving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the interface operates at lower voltage (1.8 volts) to improve battery life, then energy efficiency is improved, but data transmission rate deteriorates
Solution Approach 1:
The interface circuit dynamically switches between different operating modes (high-speed mode and power-saving mode) based on operational requirements. In high-speed mode, the circuit operates at higher performance levels, while in power-saving mode, it reduces power consumption, allowing the system to adapt between speed and energy efficiency needs
Solution Approach 2:
The patent changes operating parameters (voltage levels, biasing conditions) to achieve different performance characteristics. By adjusting biasing voltages and operating points of the interface circuit, the system can operate efficiently at lower voltages while maintaining acceptable data transmission rates through optimized parameter selection
2Device complexity
If the transmitter and receiver share input/output pads to reduce device complexity, then device complexity is reduced, but data transmission rate deteriorates due to biasing challenges
Solution Approach 1:
The patent introduces intermediary biasing circuits and control logic that mediate between the shared input/output pads and the transmitter/receiver components. These intermediary elements manage the biasing requirements of both transmitter and receiver simultaneously, enabling successful sharing of pads without sacrificing data transmission performance
Solution Approach 2:
The interface circuit dynamically switches between different operating modes (high-speed mode and power-saving mode) based on operational requirements. In high-speed mode, the circuit operates at higher performance levels, while in power-saving mode, it reduces power consumption, allowing the system to adapt between speed and energy efficiency needs
Data Source
AI summary
Various embodiments of the present technology may provide methods and apparatus for an interface. The interface may be configured as a low-voltage, bi-directional channel redriver having a transmitter and a receiver that share input pads and output pads. The interface may provide for selective biasing of the transmitter and receiver using a switching circuit and a resistance circuit connected to the channel's input and output pads.