SLUAAA9A October   2020  – May 2021 DP83TD510E

 

  1.   Trademarks
  2. 1Introduction
  3. 2Terminology
  4. 3Establishing a Link
    1. 3.1 Auto-Negotiation
    2. 3.2 Forcing Host-Client Configuration
      1. 3.2.1 AN_CONTROL (address = 0x7200) [reset = 0x1000]
      2. 3.2.2 PMA_PMD_CTRL (address = 0x1834) [reset = 0x4000]
    3. 3.3 1.0 Vpp vs. 2.4 Vpp Operating Mode
  5. 410Base-T1L Cable Parameters
    1. 4.1 Characteristic Impedance
    2. 4.2 Insertion Loss
    3. 4.3 Return Loss
    4. 4.4 Maximum Delay Link
    5. 4.5 Electromagnetic Classifications
    6. 4.6 Differential to Common Mode Conversion
    7. 4.7 Coupling Attenuation
    8. 4.8 DP83TD510 Cable Reach Performance
  6. 5Revision History

1 Introduction

The 10Base-T1L standard allows connected devices in building and factory automation, monitoring stations, and sensing applications to reach new lengths through single-pair Ethernet. Designing a robust system to handle the challenges of communicating over 1,000 meters requires careful consideration of the capabilities of an Ethernet PHY and the specifications of the cable. The DP83TD510E Single-Pair Ethernet (SPE) PHY is a 10Base-T1L, IEEE 802.3cg compliant Ethernet transceiver. The DP83TD510E’s 1.0 Vpp and 2.4 Vpp operating modes offer design flexibility in maximizing cable reach for building, factory and process automation, including intrinsic safety applications. The following sections discuss each of these features or tools.

Cable length considerations:

  • Establishing link through Auto-negotiation and forced modes
  • Establishing link in 1.0 Vpp and 2.4 Vpp output operating modes
  • Adjusting external MDI terminations to optimize cable impedance
  • Understanding medium requirements for cable selection

Each section provides background into the functionality of the PHY and guidance on how to design for each mode of operation.