Terasic Mercury A2700 User Manual page 82

10/100/1000 Mbps Gigabit Ethernet transceiver also supports RGMII MAC interface.
Figure 2-32 shows the connections between the HPS, Gigabit Ethernet PHY, and
RJ-45 connector.
For more information about the KSZ9031RN PHY chip and its datasheet, as well as the
application notes, which are available on the manufacturer's website.
Figure 2-32 Connections between the HPS of Apollo Agilex and RGMII MAC
There are two LEDs, a green LED (LEDG) and a yellow LED (LEDY), which represent
the status of the Ethernet PHY (KSZ9031RN). The LED control signals are connected
to the LEDs on the RJ45 connector. The state and the definition of LEDG and LEDY
are listed in Table
established once the LEDG lights on.
LED (State)
LEDG LEDY
H H
L H
Toggle H
H L
H Toggle
L L
2-27. For instance, the connection from board to Gigabit Ethernet is
Table 2-27 State and Definition of LED Mode Pins
LED (Definition)
LEDG
OFF
ON
Blinking
OFF
OFF
ON
MA27
User Manual
Link /Activity
LEDY
OFF Link off
OFF 1000 Link / No Activity
OFF 1000 Link / Activity (RX, TX)
ON 100 Link / No Activity
Blinking 100 Link / Activity (RX, TX)
ON 10 Link/ No Activity
82 www.terasic.com
February 17,
2024