SLVUC11 EVM User's guide

SLVUC11 April 2021 DP83561-SP

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3.4 MAC Interface Breakout Connectors

The DP83561EVM comes with two MAC interface breakout boards, and RGMII back-to-back connector board, and a MAC interface breakout board. When configuring the DP83561-SP for MII mode, the MAC interface breakout board must be used to access the MII pins.

RGMII Back-to-Back Configuration

Connect J4 of the main DP83561EVM board to J22 of the RGMII back-to-back connector
Connect J19 of the RGMII back-to-back connector to a second DP83561EVM or other RGMII MAC

Note: RGMII back-to-back connector is reversible, RGMII back-to-back breakout connector can be conneted to a DP83561EVM on either J19 or J22.

Figure 3-3 DP83561EVM RGMII Back-to-Back Connection Diagram

MAC Interface Breakout Board Configuration

The MAC Interface Breakout Board can be used to directly access the MII pins of the DP83561-SP. This board can be used for configurations such as configuring the DP83561EVM for RGMII external loopback tests as described by RGMII BER Testing - External Loopback Configuration, or connecting an MII MAC.

Connect J4 of the main DP83561EVM board to J1 of the MAC interface breakout board
MAC interface pins can be accessed via J2 of the MAC interface breakout board connector.

Figure 3-4 MAC Interface Breakout Board Connection