Error Response Circuit for Low Power Data Transfer Integrity

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Solution Overview

Problem

In semiconductor integrated circuits, data transfer can be disrupted when a destination circuit enters a low power consumption state, causing the source circuit to fail to receive a response signal, leading to improper data transfer termination and potential system hang-ups.

Innovation Solution

An error response circuit is introduced, comprising an analysis unit to detect data transfer status, a response unit to generate error signals when the destination circuit is in a low power state, and a switching unit to transmit these error signals in place of response signals, ensuring the source circuit can detect transfer failures and take appropriate action.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the destination circuit section enters a low power consumption state during data transfer, then power consumption is reduced, but the source circuit section cannot receive a response signal causing data transfer to stop improperly

Engineering Contradiction:
Improvepower consumptionVSAvoiddata transfer reliability
Core Design Contradiction:
Loss of energyVSReliability

Solution Approach 1:

An error response circuit is introduced as an intermediary between the destination circuit section and the source circuit section. This intermediary detects when the destination enters low power state during data transfer and generates appropriate error response signals to notify the source, thereby maintaining reliable data transfer communication while allowing the destination to enter low power state.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The error response circuit implements a feedback mechanism by monitoring the power state of the destination circuit section and sending error response signals back to the source circuit section when low power state is detected during data transfer. This feedback loop enables the source to recognize and handle the transfer interruption properly.

Inventive Principle:
Principle #23Feedback

2Loss of energy

If the destination circuit section enters low power state during data transfer, then power consumption is reduced, but the source circuit section hangs up and cannot perform processes

Engineering Contradiction:
Improvepower consumptionVSAvoiddata transfer completion
Core Design Contradiction:
Loss of energyVSProductivity

Solution Approach 1:

The error response circuit acts as a mediator that prevents the source circuit section from hanging up by properly communicating the low power state interruption to the source, allowing it to terminate the transfer gracefully and continue with other processes.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

By providing feedback through error response signals, the system enables the source circuit section to recognize when data transfer has been interrupted due to low power state, allowing it to properly terminate the transfer and maintain productivity.

Inventive Principle:
Principle #23Feedback

3Reliability

If error response circuit is introduced to prevent hang-ups, then data transfer reliability is improved, but device complexity increases

Engineering Contradiction:
Improvedata transfer reliabilityVSAvoidcircuit complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The error response circuit is designed as a dedicated intermediary component that simplifies the overall system architecture by centralizing the low power state detection and error signal generation functionality, rather than requiring complex protocols between existing circuit sections.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9898358B2Error response circuit, semiconductor integrated circuit, and data transfer control method
Publication Date: 2018.02.20 SOCIONEXT INC
  • US9898358B2 patent drawing
  • US9898358B2 patent drawing
  • US9898358B2 patent drawing

AI summary

In an error response circuit an analysis circuit unit analyzes a command transmitted from a first circuit section to a second circuit section, and detects a status of data transfer between the first circuit section and the second circuit section. A response circuit unit generates an error signal in accordance with the detected status of the data transfer in response to the second circuit section changing from a first power consumption state to a second power consumption state in which power consumption is lower than power consumption in the first power consumption state. A switching circuit unit transmits the error signal to the first circuit section in place of a response signal that is responsive to the command and transmitted from the second circuit section to the first circuit section.