43
Table 3-26 Pin Assignments for LEDs, Switches and Buttons
Signal Name
HPS GPIO
Register/bit
Function
HPS_KEY
GPIO54
GPIO1[25]
I/O
HPS_LED
GPIO53
GPIO1[24]
I/O
3
3
.
.
7
7
.
.
2
2
G
G
i
i
g
g
a
a
b
b
i
i
t
t
E
E
t
t
h
h
e
e
r
r
n
n
e
e
t
t
The board provides Ethernet support via an external Micrel KSZ9021RN PHY chip and HPS
Ethernet MAC function. The KSZ9021RN chip with integrated 10/100/1000 Mbps Gigabit Ethernet
transceiver support RGMII MAC interfaces.
Figure 3-30
shows the connection setup between the
Gigabit Ethernet PHY and Cyclone V SoC FPGA.
The associated pin assignments are listed in
Table 3-27
. For detailed information on how to use the
KSZ9021RN refers to its datasheet and application notes, which are available on the manufacturer’s
website.
Figure 3-30 Connections between Cyclone V SoC FPGA and Ethernet
Table 3-27 Pin Assignments for Ethernet PHY
Signal Name
FPGA Pin No.
Description
I/O Standard
HPS_ENET_TX_EN
PIN_A20
GMII and MII transmit enable
3.3V
HPS_ENET_TX_DATA[0]
PIN_F20
MII transmit data[0]
3.3V
Summary of Contents for DE1-SOC
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