M-PHY Signal Routing via PCI Connectors
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Solution Overview
Problem
The M-PHY standard lacks defined physical connectors, limiting flexibility in device connections, and existing solutions like PCI-based connectors are not optimized for M-PHY signal integrity.
Innovation Solution
Repurposing PCI-based connectors to accommodate M-PHY standard compliant signals by mapping specific pins to M-PHY data paths, allowing M-PHY devices with PCI-based connectors to communicate effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If M-PHY standard is used for high-speed communication, then data rate is improved, but physical connector compatibility is worsened due to lack of defined connectors
Solution Approach 1:
The patent maps M-PHY differential signal pairs (TXDP/TXDN, RXDP/RXDN) to PCI connector pins, allowing the same physical connector to serve both PCI and M-PHY protocols. This multi-functional approach enables high-speed M-PHY communication while maintaining compatibility with existing PCI connector infrastructure, resolving the contradiction between speed improvement and connector compatibility.
2Reliability
If new dedicated connectors are designed for M-PHY, then signal integrity is improved, but manufacturing complexity and cost are worsened
Solution Approach 1:
By reusing existing PCI connectors for M-PHY signals, the patent avoids the need to design and manufacture entirely new connector types. The same connector housing, contact structures, and assembly processes can be used, significantly reducing manufacturing complexity and cost while still achieving reliable signal integrity through proper pin assignment and impedance control.
Solution Approach 2:
The existing PCI connector infrastructure serves the M-PHY protocol by itself through appropriate signal mapping. Rather than requiring external new connector designs, the mature PCI connector design automatically provides the necessary mechanical and electrical interface when configured with the correct pin assignments for M-PHY differential pairs.
3Ease of operation
If PCI connector pins are repurposed for M-PHY signals, then ease of adoption is improved, but signal optimization is worsened
Solution Approach 1:
The patent applies parameter changes by adjusting the electrical characteristics of the PCI connector pins through impedance control and differential signaling configuration. By modifying the electrical parameters (impedance matching, signal voltage levels, timing) while using the same physical pins, the existing connector achieves optimized M-PHY signal performance without requiring manufacturing precision changes to the connector structure itself.
Data Source
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AI summary
Embodiments disclosed herein include operating the M-PHY communications over peripheral component interconnect (PCI)-based interfaces. Related cables, connectors, systems, and methods are also disclosed. In particular, embodiments disclosed herein take the M-PHY standard compliant signals and direct them through a PCI compliant connector (and optionally cable) so as to allow two M-PHY standard compliant devices having PCI connectors to communicate.