Altera Stratix III Development Board - Manual (Page 47)

Chapter 2: Board Components 2–39
Components and Interfaces
May 2013 Altera Corporation Stratix III 3SL150 Development Board
Reference Manual
Components and Interfaces
This section describes the board’s communication ports and interface cards relative to
the Stratix III device. The board supports the following communication ports:
■ “USB 2.0 MAC/PHY” on page 2–39
■ “10/100/1000 Ethernet” on page 2–39
■ “High-Speed Mezzanine Cards” on page 2–41
USB 2.0 MAC/PHY
The board incorporates the FTDI USB 2.0 PHY chip. The device interfaces to J5, a
Type B USB connector. The maximum speed of the interface is 12 Mbps. Typical
application speeds are around 1.5 Mbps; however, actual system speed may vary.
The primary usage for the USB device is to provide JTAG programming of on-board
devices such as the FPGA and flash memory. The interface is also the default
connection between the FPGA and the host PC applications such as SignalTap
® II,
DSP Builder, and the Nios © II JTAG universal asynchronous receiver/transmitter
(UART).
f For more information about the data sheet and related documentation, contact FTDI
at
www.ftdichip.com .
Table 2–38 lists the FTDI USB interface component reference and manufacturing
information.
10/100/1000 Ethernet
A Marvell 88E1111 device is used for 10/100/1000 base-T Ethernet connection. The
device is an auto-negotiating Ethernet PHY with a GMII, RGMII, or SGMII interface
to the FPGA. Stratix III devices can communicate with LVDS interfaces at up to
1.25 Gbps, which is well above the 1.0 Gbps SGMII requirement. The MAC function
must be provided in the FPGA for typical networking applications. The Marvell PHY
uses 2.5-V and 1.1-V power rails and requires a 25-MHz reference clock driven from a
dedicated oscillator. It interfaces to a HALO HFJ11-1G02E model RJ-45 with internal
magnetics that can be used for driving copper lines with Ethernet traffic.
Table 2–38. FTDI Interface Component Reference and Manufacturing Information
Board Reference Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
U11 FTDI USB device FTDI Ltd. FT245BL www.ftdichip.com