Altera Transceiver Signal Integrity Development Kit, Stra Manual de usuario descargar pdf (Pagina 40)

2–32 Chapter 2: Board Components

Components and Interfaces

Transceiver Signal Integrity Development Kit May 2014 Altera Corporation

Stratix V GT Edition Reference Manual

Components and Interfaces

This section describes the development board's communication ports and interface

cards relative to the Stratix V GT device. The development board supports the

following components and interfaces:

■ 10/100/1000 Ethernet

■ Transceiver interfaces

■ XFP interface

■ Small Form-Factor Pluggable (SFP+) interface

10/100/1000 Ethernet

The development board supports a 10/100/1000 BASE-T Ethernet connection using a

Marvell 88E1111 PHY device and the Altera Triple-Speed Ethernet MegaCore MAC

function. The device is an auto-negotiating Ethernet PHY with an SGMII interface to

the FPGA. The Stratix V GT device can communicate with the LVDS interfaces at up

to 1.25 Gbps. The MAC function must be provided in the FPGA for typical

networking applications. The Marvell 88E1111 PHY uses 2.5-V and 1.2-V power rails

and requires a 25-MHz reference clock driven from a dedicated oscillator. It interfaces

to an RJ-45 with internal magnetics that can be used for driving copper lines with

Ethernet traffic.

Figure 2–9 shows the SGMII interface between the FPGA (MAC) and Marvell 88E1111

PHY.

Table 2–31 lists the Ethernet PHY interface pin assignments.

Figure 2–9. SGMII Interface between FPGA (MAC) and Marvell 88E1111 PHY

MAC

88E1111

Device

Transformer

RJ45

SGMII Interface

S_IN

S_OUT ±

CAT 5 UTP:

- 10BASE-T

- 100BASE-TX

- 1000BASE-T

Table 2–31. Ethernet PHY Pin Assignments, Signal Names and Functions (Part 1 of 2)

Board

Reference (U22)

Schematic Signal Name I/O Standard

Stratix V GT

Device Pin Number

Description

ENET_INTN

2.5-V AL14 Management bus Interrupt

ENET_LED_DUPLEX

2.5-V — Duplex LED

ENET_LED_LINK10

2.5-V — 10-Mb link LED

ENET_LED_LINK100

2.5-V — 100-Mb link LED

ENET_LED_LINK1000

2.5-V — 1000-Mb link LED

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 51 52

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Altera Transceiver Signal Integrity Development Kit, Stra Manual de usuario Pagina 40

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