User manual

9 Ethernet PHY
The Arty Z7 uses a Realtek RTL8211E-VL PHY to implement a 10/100/1000 Ethernet port for
network connection. The PHY connects to MIO Bank 501 (1.8V) and interfaces to the Zynq-
7000 APSoC via RGMII for data and MDIO for management. The auxiliary interrupt (INTB)
and reset (PHYRSTB) signals connect to MIO pins MIO10 and MIO9, respectively.
Figure 9.1. Ethernet PHY signals
After power-up the PHY starts with Auto Negotiation enabled, advertising 10/100/1000 link
speeds and full duplex. If there is an Ethernet-capable partner connected, the PHY automatically
establishes a link with it, even with the Zynq not configured.
Two status indicator LEDs are on-board near the RJ-45 connector that indicate traffic (LD9) and
valid link state (LD8). Table 9.1 shows the default behavior.
Function Designator State Description
LINK LD8
c Link 10/100/1000
Blinking 0.4s ON, 2s OFF Link, Energy Efficient Ethernet (EEE) mode
ACT LD9 Blinking Transmitting or Receiving
Table 9.1. Ethernet status LEDs.