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

2.2.1 Onboard Power Supply Operation

  • EVM can operate from a single supply connected to the turret or barrel jack connector through TP8 (TP9 is GND)
    • Wide Vin: 5 V to 30 V
  • Place shunts on J20, and J21 to enable LDOs for VDD3P3, and VDD1P0
  • Place shunt on VDDMAC. This supply can have adjustable voltages depending on location of shunt.
    • J1 for 3.3V operation
    • J3 for 1.8V operation
    • J5 for 2.5V operation
  • Place shunts on J23 and J10 (left and center) to enable VSLEEP LDO and keep WAKE pin high
Figure 2-3 Onboard Supply Connection and Jumpers
GUID-AE523515-3FAB-4A6D-932E-104080069B7C-low.gifFigure 2-4 VSLEEP and WAKE Jumpers
Note:
  • The board can be powered over USB by populating J9. Ensure external supply is not connected to TP8.
  • This header has a 5-V maximum limit