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2.2 Power Requirements
The AM2x EVM Industrial Ethernet PHY Add-on Board is powered from a 3.3V input from the DF40GB 48-pin
connector that interfaces the DP83826-EVM-AM2 with the main MCU EVM. The following sections describe
the power distribution network topology that supply the AM2x EVM Industrial Ethernet PHY Add-on Board,
supporting components, and reference voltages.
2.2.1 Power Tree
The DP83826-EVM-AM2 power is supplied from the main Sitara AM2x EVM via the DF40GB connector.
3.3V (VDDIO) is connected to pin 44 and 46 on the DF40GB connector, and is passed to the source inputs on
the DP83826ERHBT Industrial Ethernet PHY through a pair of ferrite beads (one per supply net).
Figure 2-3
shows the power connections of DP83826-EVM-AM2.
4
AM2x Evaluation Module for Industrial Ethernet PHY Add-on Board
Figure 2-3. Power Tree
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SPRUJA8 – JANUARY 2024
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