Humanoid robot wired communication and zone control

Build a scalable, deterministic communication backbone for sensors, actuators, and central compute in humanoid robots.

Overview

Humanoid robots need reliable data exchange between sensors, joint controllers, and central compute. Zonal architectures reduce cable weight and complexity by aggregating local traffic. Infineon offers products for scalable Ethernet, cost-efficient CAN/CAN FD, and designs using EtherCAT® technology, including microcontrollers, transceivers, PHYs, and switches.

Benefits

  • Reduce cable weight and complexity
  • Scale from 10 Mbps to 10 Gbps
  • Enable deterministic motion control
  • Synchronize sensors and actuators
  • Improve resilience and uptime
  • Connect cameras and joint nodes
  • Support zonal and central designs
  • Build on automotive-grade quality
  • Enable hybrid network architectures

Block diagram

About

Protect the battery bus, distributed power rails and loads

A humanoid robot can combine Ethernet, CAN/CAN FD, and EtherCAT® according to each zone’s requirements. Their distinct strengths make a hybrid network a cost-effective approach to communication and control.

  • Ethernet delivers the highest bandwidth and supports flexible switched topologies, making it well suited to cameras, sensor fusion, diagnostics, and a scalable backbone. It requires careful traffic management and may cost more at gigabit speeds.
  • CAN/CAN FD provides robust, cost-efficient connectivity for lower-data-rate sensors and actuators. As bus load grows, arbitration limits available bandwidth and update rates.
  • EtherCAT® enables deterministic communication and precise synchronization for motion-control nodes. Conventional 100 Mbit/s links, however, offer less bandwidth headroom than Gigabit Ethernet.

A practical architecture aggregates local traffic in each zone and connects zone controllers to central compute over high-speed Ethernet. Infineon offers communication solutions and microcontrollers for zone control, providing a comprehensive portfolio for humanoid robot communication and control. This streamlines integration and supports scalable, modular humanoids.

Scalable Ethernet for zonal control and high-bandwidth sensing

Ethernet scales from 10BASE-T1S and 100BASE-T1 to 1 Gbps and multi-gigabit links, enabling one network for control, sensor streams, diagnostics, and software updates. With TSN, QoS, and IEEE 1588 PTP, designers can prioritize control traffic, synchronize distributed devices, and achieve bounded latency. IEEE 802.1CB frame replication and elimination can improve resilience.

Advantages include high bandwidth, flexible topology, lightweight single-pair cabling, and easy scaling from zones to central compute. Trade-offs include added design effort for traffic scheduling and congestion control, plus potentially higher silicon cost at gigabit speeds.

Infineon solutions include BRIGHTLANE™ 88Q111x PHYs and 88Q5192 switches, together with AURIX™ TC3x microcontrollers for zonal control.

Learn about BRIGHTLANE™ Ethernet PHYs
View BRIGHTLANE™ Ethernet switches

CAN and CAN FD for robust, cost-efficient local communication

CAN and CAN FD are well suited to local sensors, actuators, and established control functions where moderate data rates are sufficient. Their strengths include proven robustness, simple shared-bus wiring, broad adoption, and attractive node cost. CAN FD supports up to 64 data bytes per frame and a faster data phase than Classical CAN.

The trade-off is limited bandwidth: as bus load and node traffic grow, arbitration and serialization reduce available update rates. CAN/CAN FD is therefore less suitable for high-resolution cameras, large sensor streams, or a unified high-speed backbone.

Infineon solutions include AURIX™ TC3x microcontrollers with CAN FD, PSOC™ Control C3 microcontrollers for real-time control, and automotive CAN transceivers, including the TLE935x family.

Discover automotive CAN transceivers
Learn about PSOC™ Control C3

Products for synchronized EtherCAT® multi-axis motion control

EtherCAT® is optimized for deterministic industrial control and precise synchronization across distributed joint and motor-control nodes. On-the-fly frame processing and distributed clocks enable high update rates with low jitter. It supports the line and daisy-chain topologies, and optional cable redundancy can improve availability.

The principal trade-off for conventional EtherCAT® is its 100 Mbit/s physical layer, which offers less bandwidth headroom than Gigabit Ethernet for cameras and converged traffic. EtherCAT® is therefore a strong choice for dedicated motion-control segments, while higher-speed Ethernet better suits bandwidth-intensive sensing and backbones.

Infineon XMC4300 and XMC4800 microcontrollers provide integrated EtherCAT® slave functionality for compatible real-time control designs.

EtherCAT® is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH.

View XMC4300 microcontrollers
View XMC4800 microcontrollers

Zone controllers for scalable, safe humanoid robot architectures

Zone controllers bring communication, control, and diagnostics closer to the robot’s limbs. Placed at shoulders, hips, or other regional hubs, they aggregate sensor and actuator traffic, coordinate local functions, and connect multiple joint controllers to central compute.

This reduces point-to-point cabling and allows time-critical local traffic to stay within the zone while higher-level commands and sensor data travel over a high-speed backbone. A zonal controller can bridge Ethernet with CAN/CAN FD, 10BASE-T1S, or EtherCAT® segments according to bandwidth, latency, and cost needs.

AURIX™ microcontrollers support zonal coordination, functional safety, security, and deterministic communication, while PSOC™ Control C3 and MOTIX™ solutions can serve distributed motor-control nodes. Redundant Ethernet paths and TSN can further strengthen availability and synchronization.

Explore AURIX™ TC3x microcontrollers
View XMC4800 microcontrollers

Protect the battery bus, distributed power rails and loads

A humanoid robot can combine Ethernet, CAN/CAN FD, and EtherCAT® according to each zone’s requirements. Their distinct strengths make a hybrid network a cost-effective approach to communication and control.

  • Ethernet delivers the highest bandwidth and supports flexible switched topologies, making it well suited to cameras, sensor fusion, diagnostics, and a scalable backbone. It requires careful traffic management and may cost more at gigabit speeds.
  • CAN/CAN FD provides robust, cost-efficient connectivity for lower-data-rate sensors and actuators. As bus load grows, arbitration limits available bandwidth and update rates.
  • EtherCAT® enables deterministic communication and precise synchronization for motion-control nodes. Conventional 100 Mbit/s links, however, offer less bandwidth headroom than Gigabit Ethernet.

A practical architecture aggregates local traffic in each zone and connects zone controllers to central compute over high-speed Ethernet. Infineon offers communication solutions and microcontrollers for zone control, providing a comprehensive portfolio for humanoid robot communication and control. This streamlines integration and supports scalable, modular humanoids.

Scalable Ethernet for zonal control and high-bandwidth sensing

Ethernet scales from 10BASE-T1S and 100BASE-T1 to 1 Gbps and multi-gigabit links, enabling one network for control, sensor streams, diagnostics, and software updates. With TSN, QoS, and IEEE 1588 PTP, designers can prioritize control traffic, synchronize distributed devices, and achieve bounded latency. IEEE 802.1CB frame replication and elimination can improve resilience.

Advantages include high bandwidth, flexible topology, lightweight single-pair cabling, and easy scaling from zones to central compute. Trade-offs include added design effort for traffic scheduling and congestion control, plus potentially higher silicon cost at gigabit speeds.

Infineon solutions include BRIGHTLANE™ 88Q111x PHYs and 88Q5192 switches, together with AURIX™ TC3x microcontrollers for zonal control.

Learn about BRIGHTLANE™ Ethernet PHYs
View BRIGHTLANE™ Ethernet switches

CAN and CAN FD for robust, cost-efficient local communication

CAN and CAN FD are well suited to local sensors, actuators, and established control functions where moderate data rates are sufficient. Their strengths include proven robustness, simple shared-bus wiring, broad adoption, and attractive node cost. CAN FD supports up to 64 data bytes per frame and a faster data phase than Classical CAN.

The trade-off is limited bandwidth: as bus load and node traffic grow, arbitration and serialization reduce available update rates. CAN/CAN FD is therefore less suitable for high-resolution cameras, large sensor streams, or a unified high-speed backbone.

Infineon solutions include AURIX™ TC3x microcontrollers with CAN FD, PSOC™ Control C3 microcontrollers for real-time control, and automotive CAN transceivers, including the TLE935x family.

Discover automotive CAN transceivers
Learn about PSOC™ Control C3

Products for synchronized EtherCAT® multi-axis motion control

EtherCAT® is optimized for deterministic industrial control and precise synchronization across distributed joint and motor-control nodes. On-the-fly frame processing and distributed clocks enable high update rates with low jitter. It supports the line and daisy-chain topologies, and optional cable redundancy can improve availability.

The principal trade-off for conventional EtherCAT® is its 100 Mbit/s physical layer, which offers less bandwidth headroom than Gigabit Ethernet for cameras and converged traffic. EtherCAT® is therefore a strong choice for dedicated motion-control segments, while higher-speed Ethernet better suits bandwidth-intensive sensing and backbones.

Infineon XMC4300 and XMC4800 microcontrollers provide integrated EtherCAT® slave functionality for compatible real-time control designs.

EtherCAT® is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH.

View XMC4300 microcontrollers
View XMC4800 microcontrollers

Zone controllers for scalable, safe humanoid robot architectures

Zone controllers bring communication, control, and diagnostics closer to the robot’s limbs. Placed at shoulders, hips, or other regional hubs, they aggregate sensor and actuator traffic, coordinate local functions, and connect multiple joint controllers to central compute.

This reduces point-to-point cabling and allows time-critical local traffic to stay within the zone while higher-level commands and sensor data travel over a high-speed backbone. A zonal controller can bridge Ethernet with CAN/CAN FD, 10BASE-T1S, or EtherCAT® segments according to bandwidth, latency, and cost needs.

AURIX™ microcontrollers support zonal coordination, functional safety, security, and deterministic communication, while PSOC™ Control C3 and MOTIX™ solutions can serve distributed motor-control nodes. Redundant Ethernet paths and TSN can further strengthen availability and synchronization.

Explore AURIX™ TC3x microcontrollers
View XMC4800 microcontrollers
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