SNLS663A December   2021  – December 2025 DP83TC814R-Q1 , DP83TC814S-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Timing Diagrams
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Diagnostic Tool Kit
        1. 7.3.1.1 Signal Quality Indicator
        2. 7.3.1.2 Electrostatic Discharge Sensing
        3. 7.3.1.3 Time Domain Reflectometry
        4. 7.3.1.4 Voltage Sensing
        5. 7.3.1.5 BIST and Loopback Modes
          1. 7.3.1.5.1 Data Generator and Checker
          2. 7.3.1.5.2 xMII Loopback
          3. 7.3.1.5.3 PCS Loopback
          4. 7.3.1.5.4 Digital Loopback
          5. 7.3.1.5.5 Analog Loopback
          6. 7.3.1.5.6 Reverse Loopback
      2. 7.3.2 Compliance Test Modes
        1. 7.3.2.1 Test Mode 1
        2. 7.3.2.2 Test Mode 2
        3. 7.3.2.3 Test Mode 4
        4. 7.3.2.4 Test Mode 5
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power Down
      2. 7.4.2 Reset
      3. 7.4.3 Standby
      4. 7.4.4 Normal
      5. 7.4.5 Media Dependent Interface
        1. 7.4.5.1 100BASE-T1 Leader and 100BASE-T1 Follower Configuration
        2. 7.4.5.2 Auto-Polarity Detection and Correction
        3. 7.4.5.3 Jabber Detection
        4. 7.4.5.4 Interleave Detection
      6. 7.4.6 MAC Interfaces
        1. 7.4.6.1 Media Independent Interface
        2. 7.4.6.2 Reduced Media Independent Interface
        3. 7.4.6.3 Reduced Gigabit Media Independent Interface
        4. 7.4.6.4 Serial Gigabit Media Independent Interface
      7. 7.4.7 Serial Management Interface
        1. 7.4.7.1 Direct Register Access
        2. 7.4.7.2 Extended Register Space Access
        3. 7.4.7.3 Write Operation (No Post Increment)
        4. 7.4.7.4 Read Operation (No Post Increment)
        5. 7.4.7.5 Write Operation (Post Increment)
        6. 7.4.7.6 Read Operation (Post Increment)
    5. 7.5 Programming
      1. 7.5.1 Strap Configuration
      2. 7.5.2 LED Configuration
      3. 7.5.3 PHY Address Configuration
  9. 8 Register Maps
    1. 8.1 Register Access Summary
    2. 8.2 DP83TC814 Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Physical Medium Attachment
          1. 9.2.1.1.1 Common-Mode Choke Recommendations
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 Signal Traces
        2. 9.4.1.2 Return Path
        3. 9.4.1.3 Metal Pour
        4. 9.4.1.4 PCB Layer Stacking
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4.7.5 Write Operation (Post Increment)

To write a register in the extended register set and automatically increment the address register to the next higher value following the write operation:

Instruction Example: Set reg 0x0170 = 0C50 & reg 0x0171 = 0x0011

1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.

Write register 0x0D to value 0x001F

2. Write the register address from register ADDAR.

Write register 0x0E to value 0x0170
3. Write the value 0x801F (data, post increment on reads and writes function field = 10, DEVAD = 31) or the value 0xC01F (data, post increment on writes function field = 11. DEVAD = 31) to register REGCR. Write register 0x0D to value 0x801F
4. Write the content of the desired extended register set register to register ADDAR.

Write register 0x0E to value 0x0C50
5. Subsequent writes to register ADDAR (step 4) writes the next higher addressed data register selected by the value of the address register; the address register is incremented after each access. Write register 0x0E to value 0x0011

Step 4 Writes register 0x0170 to 0x0C50 and because post increment is enabled, Step 5 writes register 0x0171 to 0x0011.