By default, VBUS capacitance is 4.7 µF. Jumper JP1 may be shorted while in host
mode in order to increase VBUS capacitance by 150 µF. Jumper JP2 must be installed
for the Eclypse to power VBUS for host or embedded host applications. These
requirements give three possible configurations for the two jumpers, as presented in
Table 10.1.
Whether the Eclypse Z7 is configured as an embedded host or a general purpose host,
it can provide at least 500 mA on the 5V VBUS line. More than 500 mA of current can
potentially be provided depending on the system configuration and how much power is
drawn by installed Zmods. See the
Table 10.1: USB Mode Jumper Positions
Mode
JP1 Shorted
JP2 Shorted
Embedded Host
No
Yes
General Purpose Host
Yes
Yes
Peripheral Device
No
No
11. Ethernet
The Eclypse 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 AP SoC via RGMII for data and MDIO for management.
The auxiliary interrupt (INTB) and reset (PHYRSTB) signals connect to PS pins to be
accessed through the MIO GPIO peripheral via MIO48 and MIO9 respectively. The
connection diagram can be seen on Figure 11.1.
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.
