Multi-Cable Interconnect Layout for Flexible PCB Breakout Routing

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Solution Overview

Problem

Existing connection systems for pluggable modules in computer systems restrict users to using cables that are either too long or too short, making it difficult to efficiently connect multiple lanes of pluggable modules to various breakouts on a PCB without redesigning the system.

Innovation Solution

A connection system comprising cage-side connectors and PCB-side connectors, with individually managed cables of varying lengths, allowing independent connection of each lane of a pluggable module to multiple breakouts on a PCB or multiple PCBs, facilitating quick and efficient routing configurations without requiring system redesign.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single cable connects a pluggable module to a PCB breakout, then the connection is simple, but the cable length is either too long or too short and cannot be adjusted

Engineering Contradiction:

Improvecable connection flexibilityVSAvoidcable length adaptability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent divides a single cable connection into multiple separate cable connections. Each lane of the pluggable module has its own dedicated cable connecting to the PCB breakout, allowing independent length selection for each cable based on the specific physical layout and distance requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a universal cable management system where multiple cables with different lengths can be used to connect the same pluggable module to different PCB breakouts. The system accommodates various cable lengths (e.g., 6 inches, 12 inches, 18 inches) to adapt to different device configurations and spacing arrangements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If cables are individually managed with varying lengths, then connection flexibility improves, but system complexity increases

Engineering Contradiction:

Improveconnection configuration flexibilityVSAvoidcable management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a dynamic cable management approach where the system can be configured differently based on specific needs. Cables can be routed through different paths (e.g., through the cage wall, along the PCB edge, or directly), and the number of cables can be adjusted based on how many lanes need to be connected to the PCB breakout.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies different cable routing strategies and lengths to different lanes based on their specific requirements. Not all lanes need to be connected to the PCB breakout, and cables for different lanes may have different lengths depending on the physical distance and routing path chosen for each connection.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250322981A1Multi-cable interconnect connection system

Publication Date: 2025.10.16 MELLANOX TECHNOLOGIES LTD(IL)

AI summary

A system for connecting cage-side connectors to PCB-side connectors. The system enables OSFP and QSFP pluggable modules to be connected to breakouts on PCBs within a networking device. The system includes one or more cage-side connectors connected via one or more cables to one or more PCB-side connectors. Keyed PCB-side connectors and unique lengths of cables ensure proper connections to headers on a PCB.