Terminology » Protocols » 100Base-T1 vs 1000Base-T1: Key Differences Explained

100Base-T1 vs 1000Base-T1: Key Differences Explained

automotive ethernet data communication networking basics communication protocol ieee standard

This article highlights the distinctions between 100Base-T1 and 1000Base-T1, two prominent Ethernet bus technologies employed in the automotive sector.

Overview

Let’s dive into the similarities and differences between these two technologies:

  • 100Base-T1: Designed to transmit data at 100 Mbps over a single twisted-pair cable.
  • 1000Base-T1: Engineered to facilitate data transfer at 1000 Mbps (1 Gbps) also using a single twisted-pair cable.

Key Similarities

  • Both standards leverage multi-level PAM-3 coding. This enables high data rates within a bandwidth of approximately 600MHz.
  • Both adhere to the same minimum and maximum frame sizes as defined by the IEEE 802.3 standard.
  • Both operate exclusively in full-duplex mode.
  • Both maintain a Bit Error Rate (BER) of 10^-10 at the MAC/PLS interface.

Key Differences

Feature100Base-T11000Base-T1
Data Rate100 Mbps1 Gbps
StandardIEEE 802.3bpIEEE 802.3bw
Connection TypePoint-to-pointPoint-to-point
CableSingle twisted pairSingle twisted pair (copper), also supports optical fiber
DistanceUp to 15 meters15 meters (copper), up to 40 meters (optical fiber)
Energy EfficiencyNot definedDefines energy-efficient Ethernet as optional specifications for manufacturers

More information

For a deeper understanding, consider exploring:

  • Features of automotive Ethernet and its requirements in automotive vehicles.
  • Comparison of other communication protocols like CAN, TTCAN, RS232, RS422, RS485, LIN, FlexRay, and MOST.
  • Details on interface types like RS232, RS485, RS422, SPI, CAN, and DigRF.
  • Fundamentals of microcontrollers, microprocessors, and microcontroller programming.