Two-Channel Transceiver Pin Configurations for 10G Jitter Mitigation
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Solution Overview
Problem
Existing high-port density networking equipment struggles to effectively manage high-jitter tendencies of 10 G signals, leading to degraded signal quality, as they lack dedicated pin configurations for bidirectional communication paths, especially at enhanced data rates.
Innovation Solution
A two-channel transceiver unit with a specific pin configuration, utilizing signal-signal-ground (SSG) and ground-signal-signal-ground (GSSG) pin assignments for each data channel, combined with clock data recovery (CDR) units and DC blocking capacitors, to mitigate jitter and ensure reliable bidirectional 10 G communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-port density networking equipment is deployed to support 10 G signals, then port density and productivity are improved, but signal quality deteriorates due to unmanaged jitter
Solution Approach 1:
The patent segments the signal transmission path by introducing separate receive and transmit pin groups for each data channel. Instead of sharing pins bidirectionally, the system divides the pin allocation into distinct segments (receive pins and transmit pins) for each channel, allowing independent optimization of signal paths and reducing jitter interference between channels.
Solution Approach 2:
The patent applies local quality by assigning specific pin configurations (SSG or GSSG) to specific data channels based on their individual requirements. Each channel receives tailored pin assignments that optimize its signal quality, rather than using a uniform pin configuration for all channels. This allows each channel to have optimized ground and signal pin placements localized to its specific transmission path.
2Adaptability or versatility
If bidirectional communication is enabled at enhanced data rates, then communication capability is improved, but jitter increases and signal quality degrades
Solution Approach 1:
The patent segments the bidirectional communication into separate receive and transmit pin groups for each data channel. By dividing the pin allocation into distinct segments rather than sharing pins, the system eliminates the jitter interference that occurs when pins are shared for bidirectional signals at enhanced data rates.
Solution Approach 2:
The patent introduces ground pins as intermediaries between signal pins in the SSG and GSSG configurations. These ground pins act as mediators that stabilize the signal paths by providing reference grounds between adjacent signal pins, reducing electromagnetic interference and jitter in the bidirectional communication paths.
3Reliability
If dedicated pin configurations are allocated for each data channel, then signal quality is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by using the same SSG and GSSG pin configuration patterns across multiple data channels. Instead of creating entirely new pin assignments for each channel, the system reuses these standardized configurations, reducing the overall complexity while maintaining optimized signal quality for each channel.
Solution Approach 2:
The patent changes the pin configuration parameters (switching between SSG and GSSG patterns) rather than creating entirely new pin assignments. By varying the ground and signal pin arrangements according to channel requirements while using the same fundamental configuration framework, the system optimizes signal quality without proportionally increasing device complexity.
Data Source
AI summary
An apparatus and method are provided for two-channel bidirectional communications between devices for enhanced data signals. In particular, the techniques describe a first transceiver channel configured to receive first data communications from a first transceiver port. A second transceiver channel is also configured to receive second data communications from a second transceiver port. A set of signal pins are configured to receive the first data communications from the first transceiver port at a first group of signal pins and to receive the second data communications from the second transceiver port at a second group of signal pins. The first group of signal pins comprises signal pins in a signal-signal-ground configuration and the second group of signal pins comprises signal pins in a ground-signal-signal-ground configuration.