Chapter 2: Board Components
2–27
Components and Interfaces
May 2013
Altera Corporation
Cyclone V GX FPGA Development Board
Reference Manual
HSMC
The development board supports a HSMC interface. This physical interface provides
four channels of 3.125 Gbps-capable transceivers. The HSMC interface also supports a
full SPI4.2 interface (17 LVDS channels), three input and output clocks, as well as
JTAG and SMB signals. The LVDS channels can be used for CMOS signaling or LVDS.
1
The HSMC is an Altera-developed open specification, which allows you to expand
the functionality of the development board through the addition of daughtercards
(HSMCs).
f
For more information about the HSMC specification such as signaling standards,
signal integrity, compatible connectors, and mechanical information, refer to the
High
Speed Mezzanine Card (HSMC) Specification
manual.
24
ENET_MDIO
D18
2.5-V CMOS
Management bus data
28
ENET_RESETN
J17
2.5-V CMOS
Device reset
2
ENET_RX_CLK
G17
2.5-V CMOS
RGMII receive clock
95
ENET_RX_D0
AF8
2.5-V CMOS
RGMII receive data bus
92
ENET_RX_D1
AB9
2.5-V CMOS
RGMII receive data bus
93
ENET_RX_D2
AA9
2.5-V CMOS
RGMII receive data bus
91
ENET_RX_D3
AH7
2.5-V CMOS
RGMII receive data bus
94
ENET_RX_DV
D19
2.5-V CMOS
RGMII receive data valid
11
ENET_TX_D0
AG7
2.5-V CMOS
RGMII transmit data bus
12
ENET_TX_D1
AB8
2.5-V CMOS
RGMII transmit data bus
14
ENET_TX_D2
AA8
2.5-V CMOS
RGMII transmit data bus
16
ENET_TX_D3
AG8
2.5-V CMOS
RGMII transmit data bus
9
ENET_TX_EN
K20
2.5-V CMOS
RGMII transmit enable
55
ENET_XTAL_25MHZ
—
2.5-V CMOS
25-MHz RGMII transmit clock
29
MDI_P0
—
2.5-V CMOS
Media dependent interface
31
MDI_N0
—
2.5-V CMOS
Media dependent interface
33
MDI_P1
—
2.5-V CMOS
Media dependent interface
34
MDI_N1
—
2.5-V CMOS
Media dependent interface
39
MDI_P2
—
2.5-V CMOS
Media dependent interface
41
MDI_N2
—
2.5-V CMOS
Media dependent interface
42
MDI_P3
—
2.5-V CMOS
Media dependent interface
43
MDI_N3
—
2.5-V CMOS
Media dependent interface
Table 2–23. Ethernet PHY Pin Assignments, Signal Names and Functions (Part 2 of 2)
Board
Reference (U10)
Schematic Signal Name
Cyclone V GX
Pin Number
I/O Standard
Description