SNLU292A November   2020  – March 2022 DP83TC812R-Q1 , DP83TC812S-Q1 , DP83TC814R-Q1 , DP83TC814S-Q1

 

  1. 1Revision History
    1.     Trademarks
  2. 2Introduction
    1. 2.1 Key Features
    2. 2.2 Operation – Quick Setup
      1. 2.2.1 Onboard Power Supply Operation
      2. 2.2.2 SMI Connection and Communication
        1. 2.2.2.1 On-board MSP Connection
        2. 2.2.2.2 Downloading USB2MDIO for SMI
        3. 2.2.2.3 SMI Interface
      3. 2.2.3 Master and Slave Mode Selection – DP83TC812
      4. 2.2.4 Wake Selection – DP83TC812
      5. 2.2.5 LED Indication
  3. 3Board Setup Details
    1. 3.1 Block Diagram
    2. 3.2 Configuration Options
      1. 3.2.1 Clock Configuration
  4. 4Definitions
  5. 5Schematics
    1. 5.1 Main Block Schematic
    2. 5.2 DP83867 Schematic
    3. 5.3 Power Schematic
    4. 5.4 AFE Schematic
    5. 5.5 Comms Schematic
    6. 5.6 Hardware Schematic
  6. 6Layout

2.2.2.3 SMI Interface

Note:
  • DP83TC812 PHY_ID on EVM is 10
  • DP83867 PHY_ID on EVM is 01
After installing and enabling the USB2MDIO tool, power on the EVM and connect to the computer through the micro-USB port. Verify communication on each PHY by reading register 0x0001.
  • DP83TC812 will read 0x1 = 0x0061 with no link partner and 0x1 = 0x0065 with a link partner connected
  • DP83867 will read 0x1 = 0x7949 with no link partner and 0x1 = 0x796D with a link partner connected
  • To enable analog loopback on the DP83TC812, write 0x0108 to address 0x0016