Reception Interface Circuit Switching Buffer and Termination Modes

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Solution Overview

Problem

As semiconductor integrated circuits operate at higher speeds, increased signal frequencies and reduced signal swing widths lead to performance degradation due to noise, and compatibility issues arise between transmitter and receiver devices with different input-output interfaces, making it difficult to establish transceiver systems and degrade communication efficiency.

Innovation Solution

A reception interface circuit is designed with a termination circuit, buffer, and interface controller that changes termination modes and reception characteristics in response to control signals, allowing the circuit to support multiple communication standards and enhance compatibility between transmitter and receiver devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the operating speed of semiconductor integrated circuits is increased, then productivity is improved, but noise susceptibility increases causing performance degradation

Engineering Contradiction:

Improveoperating speedVSAvoidnoise susceptibility

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The reception interface circuit dynamically adjusts its reception characteristics by switching between different buffer configurations based on the termination mode. The buffer control signal dynamically changes the reception characteristics to match the current termination mode, enabling the circuit to adapt to different operating conditions and maintain performance at high speeds while being less susceptible to noise

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the reception characteristics parameter of the buffer in response to termination control signals. By adjusting the reception characteristics to match different termination modes, the circuit optimizes its performance for high-speed operation while maintaining noise immunity across different communication standards

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If the swing width of transferred signals is decreased to reduce power consumption, then use of energy is improved, but noise susceptibility increases causing performance degradation

Engineering Contradiction:

Improvepower consumptionVSAvoidnoise susceptibility

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The reception interface circuit dynamically adjusts its reception characteristics based on the termination mode to optimize the balance between power consumption and noise immunity. By switching between different buffer configurations, the circuit maintains low power consumption through reduced signal swing while compensating for increased noise susceptibility through adaptive reception characteristic changes

Inventive Principle:

Principle #15Dynamics

3Device complexity

If the input-output interface of the receiver device is made incompatible with the transmitter device, then device complexity is reduced, but adaptability deteriorates making transceiver system establishment difficult

Engineering Contradiction:

Improveinterface complexityVSAvoidcommunication standard compatibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The reception interface circuit is designed with multi-functionality to support multiple communication standards. By including multiple buffers with different reception characteristics and selecting the appropriate buffer based on the termination mode, a single receiver device can interface with multiple different transmitter devices and communication standards, achieving universality without requiring multiple dedicated interfaces

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The interface controller dynamically selects the appropriate buffer configuration based on the termination mode to match different communication standards. This dynamic adaptation allows the receiver to work with various transmitter interfaces without requiring complex hardwired support for every possible standard

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS10291275B2Reception interface circuits supporting multiple communication standards and memory systems including the same

Publication Date: 2019.05.14 SAMSUNG ELECTRONICS CO LTD

AI summary

A reception interface circuit includes a termination circuit, a buffer and an interface controller. The termination circuit is configured to change a termination mode in response to a termination control signal. The buffer is configured to change a reception characteristic in response to a buffer control signal. The interface controller is configured to generate the termination control signal and the buffer control signal such that the reception characteristic of the buffer is changed in association with the change in the termination mode. The reception interface circuit may support various communication standards by changing the reception characteristic of the buffer in association with the termination mode. Using the reception interface circuit, communication efficiency of transceiver systems such as a memory system and/or compatibility between a transmitter device and a receiver device may be improved.