Multidrop 10BASE-T1S Ethernet PHY with MAC Controller

Since mid of 2017, Canova Tech is actively contributing within IEEE to the standardization of the 10BASE-T1S Short Reach, Multidrop Ethernet PHY for automotive applications (see with the aim to cover low bandwidth Multidrop Ethernet communication targeting convergence toward a single network type within the car.
CT25206 is a physical layer plus a simplified MAC (MAC-PHY) for IEEE802.3cg Ethernet communication. The MAC-PHY implements the basic MAC functions (encapsulation, CRC, CSMA/CD), PLCA RS and the 10BASE-T1S PHY.
It is designed to be used in conjunction with standard MCUs interfaced via a simplified 5-pin SPI-like SSP (Synchronous Serial Port) currently under definition at Open Alliance TC6. A single MCU can be connected to multiple MAC-PHY, in this case sharing 3 of the 5 communication pins. If a single-port system is envisioned, communication can be performed using 3 pins. MAC-PHY clock could be provided by the MCU in order to save an additional external XTAL.

For more information, 

  • Compliant to IEEE 802.3cg Short Reach, Multidrop (last Standard release)
  • Designed to be compliant to EMI and EMC Automotive and Industrial requirements
  • SPI interface to HOST under definition at Open Alliance TC6
  • Reduced number of external components
  • Standard CMOS-BCD technology
  • Automotive Networking
  • Industrial in-cabinet networking
  • Proof of Concept under design
  • Silicon-Proven PHY section in 130nm Standard CMOS-BCD foreseen by Q1-2019
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