Figure 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
2.2.2 SMI Connection and Communication
2.2.2.1 On-board MSP Connection
• To connect the DP83TC812 and DP83867 to the on-board MSP430 for MDIO and MDC communication:
– Populate J14 as indicated in figure below
Note
• To use external MSP connection, please remove jumpers on J14 and connect MDC to top-left most
pin and MDIO to top-right most pin
• Cross-connection rewrok required for Rev A board not required for Rev B (current) board
Figure 2-5. On-board MSP connections for MDIO and MDC
2.2.2.2 Downloading USB2MDIO for SMI
The on-board MSP430 comes pre-programmed and ready to use. When using this EVM for the first time on a
Windows 10 PC, MSP430 drivers and USB-2-MDIO software utility need to be installed. USB-2-MDIO software
can be used for accessing the PHY's registers. The software is available to download along with its user's guide
in the link.
Introduction
SNLU292A – NOVEMBER 2020 – REVISED MARCH 2022
DP83TC812EVM-MC User's Guide
5
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