Interconnect Bridge Repeater Die Signal Integrity
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Solution Overview
Problem
Microelectronic devices face signal loss and degradation over longer interconnect bridges and higher data transfer rates, limiting the distance and configuration possibilities of silicon dies attached to a substrate.
Innovation Solution
Incorporating a repeater die or repeater circuit electrically coupled to the interconnect bridge, which can be passive or active, made of materials like silicon, glass, or ceramic, to periodically boost signals and maintain signal integrity over longer distances and higher data rates, allowing for more efficient die configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the interconnect bridge length is increased to allow greater distance between silicon dies, then the flexibility of die configuration is improved, but signal loss and degradation increase
Solution Approach 1:
The patent divides the long interconnect bridge into multiple segments by inserting repeater dies at intermediate positions. Each segment becomes a shorter, manageable transmission path that maintains signal integrity, while the overall system achieves the desired long-distance connectivity through cascaded segments.
Solution Approach 2:
The repeater die acts as an intermediary component between the transmitting and receiving silicon dies. It receives degraded signals from one die, regenerates them, and retransmits them to the next die, thereby maintaining signal quality across long interconnect bridge distances.
2Productivity
If the data transfer rate is increased to improve communication speed, then productivity is improved, but signal loss and degradation increase
Solution Approach 1:
The repeater die performs preliminary signal regeneration before the signal degrades completely. By detecting and retransmitting signals at intermediate points along the interconnect bridge, the system maintains high data transfer rates without suffering from cumulative signal degradation that would occur in a single long transmission path.
3Reliability
If a repeater die is added to mitigate signal loss in long interconnect bridges, then signal integrity is improved, but device complexity increases
Solution Approach 1:
The repeater die serves multiple functions: it acts as a signal amplifier, a buffer, and an active component in the interconnect bridge. By integrating these functions into a single die, the patent reduces the need for multiple separate components, thereby managing device complexity while maintaining signal integrity.
Solution Approach 2:
The patent merges the repeater functionality directly into the interconnect bridge structure, creating an integrated solution where the repeater die becomes an inherent part of the communication path rather than a separate add-on component. This integration simplifies the overall device architecture.
Data Source
AI summary
A device and method of utilizing a repeater circuit to extend the viable length of an interconnect bridge. Integrated circuit packages using a repeater circuit in a repeater die, embedded in a substrate, and included in an interconnect bridge are show. Methods of connecting semiconductor dies using interconnect bridges coupled with repeater circuits are shown.