Deterministic Ethernet Bridging Across Automotive Media Types

Media Converter

Low-latency PHY-to-PHY conversion between 10BASE-T1S, 100/1000BASE-T1, and 10/100/1000BASE-T for bench setups and in-vehicle evaluation.

Overview
Variants
Capabilities
Specifications
Use Cases
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Overview

The Omnitrx Media Converter implements PHY-to-PHY translation with low-latency cut-through forwarding, enabling deterministic bridging between Single Pair Ethernet (SPE) and standard BASE-T Ethernet.

It supports link monitoring and frame-level diagnostics across heterogeneous media types, while preserving FD/TX and RX timing to maintain deterministic behavior in TSN and time-sensitive setups. This makes it well-suited for bench testing, interoperability validation, and in-vehicle evaluations where timing correctness matters.

The Media Converter is MCU-controlled, providing stable, predictable operation for standard conversion tasks and link supervision without the complexity of an external host or SBC.

Media Converter Variants

10BASE-T1S ↔ 100/1000BASE-T1
10BASE-T1S ↔ 10/100/1000BASE-T
100/1000BASE-T1 ↔ 10/100/1000BASE-T
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Key Capabilities

Low latency
Low latency PHY to PHY conversion

Cut-through forwarding for realistic real-time and TSN-related testing.

Deterministic timing
Deterministic forwarding

Preserved TX/RX timing across heterogeneous media domains.

Speed range
10 Mb/s to 1 Gb/s operation

Supports a wide speed range depending on the selected variant.

MCU controlled
MCU controlled operation

Mode selection, link management, and fault indication without an external host.

Media compatibility
Broad media compatibility

Compatible with T1S, T1, and classic Ethernet media combinations.

TSN environments
Built for evaluation environments

Designed for TSN testbeds, mixed-media validation, and in-vehicle evaluation.

Specifications

Ethernet & Media Support

SPE + classic Ethernet coverage for mixed-media test setups.

  • 10BASE-T1S IEEE 802.3cg
  • 100/1000BASE-T1 IEEE 802.3bw / 802.3bp
  • 10/100/1000BASE-T IEEE 802.3u / 802.3ab
  • Deterministic PHY-to-PHY media conversion

Latency & Forwarding

Predictable, real-time behavior for lab and bench validation.

  • Cut-through forwarding (no store-and-forward)
  • Fixed, low-latency forwarding
  • Suitable for deterministic test environments

Timing & TSN Transparency

Preserves timing across media boundaries in TSN test networks.

  • RX/TX frame timing preserved across conversion
  • Transparent to TSN traffic
  • Works with external TSN synchronization nodes

Control, Diagnostics & Variants

MCU control, diagnostics, operating modes, and variant flexibility.

  • MCU-controlled data path and configuration
  • Link state monitoring, basic diagnostics, error indication
  • Variants: 10BASE-T1S ↔ 100/1000BASE-T1; 10BASE-T1S ↔ 10/100/1000BASE-T; 100/1000BASE-T1 ↔ 10/100/1000BASE-T
  • Operating modes: transparent conversion; diagnostic / characterization
L

SPE ports (T1-S / T1)

  • 10BASE-T1S (for multidrop or low-speed sensor/actuator networks)
  • 100/1000BASE-T1 (for high-speed automotive SPE links)
L

BASE-T ports (RJ45)

  • 10/100/1000BASE-T (for lab equipment, PCs, switches, or backbones)
L

MCU control & status

  • Local MCU-based management for mode selection, link monitoring, and basic diagnostics
L

PPS / timing (Platform Dependent)

  • Optional PPS I/O when used as part of a TSN timed test setup

Use Cases

Automotive SPE ↔ Lab Ethernet Bridging

Connect 10BASE-T1S or 100/1000BASE-T1 nodes to standard lab equipment (PCs, analysers, switches) using 10/100/1000BASE-T.

Domain A SPE (T1S / T1)
Domain B Lab Ethernet (RJ45)
T1S / T1 PC / analyser RJ45

Related Products

Media Converter Icon
Media Converter
Primary Role: Mixed-media translator
Core Function: Convert T1-S ↔ T1 ↔ BASE-T with low-latency forwarding
Main Interfaces: 1× T1-S, 1× T1, 1× BASE-T
Key Strengths: Deterministic bridging, timestamping, link diagnostics
Best For: Lab testing, automotive SPE interoperability, bridging legacy links
Grandmaster Icon
GM-AS (Grandmaster)
Primary Role: TSN timing master
Core Function: Distribute IEEE 802.1AS/AS-DS synchronized time
Main Interfaces: 1× T1-S, 1× T1, 1× BASE-T, PPS I/O
Key Strengths: Sub-µs timing, robust gPTP servo, multi-domain sync
Best For: TSN timing validation, ECU clock alignment, distributed systems
End Station Icon
End-station (10M–1G)
Primary Role: Deterministic Ethernet node
Core Function: Timestamped communication across 10M–1G
Main Interfaces: 1× T1-S, 1× T1, 1× BASE-T
Key Strengths: Multi-speed support, deterministic timing, flexible control (MCU/SBC)
Best For: Sensor/actuator emulation, ECU prototyping, timing-critical nodes
CAN Gateway Icon
CAN Gateway
Primary Role: CAN/Ethernet bridge
Core Function: Translate CAN/CAN-FD frames to Ethernet
Main Interfaces: 1× T1-S, 1× T1, 1× CAN
Key Strengths: Real-time mapping, low jitter, mixed-network diagnostics
Best For: CAN-to-Ethernet migration, hybrid network setups
LIN Gateway Icon
LIN Gateway
Primary Role: LIN/Ethernet bridge
Core Function: LIN master scheduling + deterministic Ethernet mapping
Main Interfaces: 1× T1-S, 1× T1, LIN via MCU GPIO/UART
Key Strengths: Accurate LIN timing, deterministic mapping, legacy integration
Best For: LIN device migration, actuator/sensor integration, zonal prototypes
Tap Icon
Tap / Probing
Primary Role: Network analyzer
Core Function: Mirror, capture & timestamp Ethernet traffic
Main Interfaces: 1× T1-S, 2× T1, 2× BASE-T
Key Strengths: Non-intrusive monitoring, high-quality timing, deep diagnostics
Best For: TSN debugging, multi-port logging, performance analysis
Aggregator Icon
Aggregator T1→T
Primary Role: Multi-T1 consolidator
Core Function: Merge multiple T1 links into a BASE-T uplink
Main Interfaces: 3× T1, 1× BASE-T
Key Strengths: Multi-stream shaping, timestamp correlation, flexible control
Best For: Sensor cluster consolidation, zonal gateway R&D
Bridged End-station Icon
Bridged End-station
Primary Role: End-station + TSN bridge
Core Function: Mixed-speed bridging with deterministic forwarding
Main Interfaces: 1× T1-S, 2× T1, 2× BASE-T
Key Strengths: TSN shaping, redundancy testing, multi-domain timing
Best For: Complex topology validation, redundancy scenarios, TSN bridge testing
Switch Icon
Switch
Primary Role: Compact TSN switch
Core Function: Multi-port, mixed-media TSN switching
Main Interfaces: 1× T1-S, 3× T1, 2× BASE-T, 1× CAN
Key Strengths: Multi-port TSN control, orchestration-ready, timing aligned
Best For: Small network emulation, SDV testbeds, orchestrated TSN setups