Altera Stratix V GX FPGA Development Board - Manual (Page 11)

Chapter 2: Board Components 2–3
Board Overview
October 2014 Altera Corporation Stratix V GX FPGA Development Board
Reference Manual
SW6 PCI Express DIP switch
Controls the PCI Express lane width by connecting prsnt pins
together on the PCI Express edge connector. This switch is located at
the back of the board.
S3 Program select push button
Toggles the program LEDs which selects the program image that loads
from flash memory to the FPGA.
S2 Program load push button
Configures the FPGA from flash memory image based on the program
LEDs.
D4, D5, D6 Program LEDs
Illuminates to show the LED sequence that determines which flash
memory image loads to the FPGA when you press the program load
push button.
D17 Configuration done LED Illuminates when the FPGA is configured.
D15 Load LED Illuminates during FPGA configuration.
D16 Error LED Illuminates when the FPGA configuration from flash fails.
D24 Power LED Illuminates when 5-V power is present.
D25, D26 System Console TX/RX LEDs
Indicate the transmit or receive activity of the System Console USB
interface. The TX and RX LEDs would flicker if the link is in use and
active. The LEDs are either off when not in use or on when in use but
idle.
D27, D28 JTAG TX/RX LEDs
Indicate the transmit or receive activity of the JTAG chain. The TX and
RX LEDs would flicker if the link is in use and active. The LEDs are
either off when not in use or on when in use but idle.
D29, D30, D31,
D32
Ethernet LEDs Indicate the connection speed as well as transmit or receive activity.
D3, D13 HSMC port A LEDs You can configure these LEDs to indicate transmit or receive activity.
D1 HSMC port A Present LED Illuminates when a daughtercard is plugged into the HSMC port A.
D11, D14 HSMC port B LEDs You can configure these LEDs to indicate transmit or receive activity.
D2 HSMC port B Present LED Illuminates when a daughtercard is plugged into the HSMC port B.
D33, D34 PCI Express Gen2/Gen3 LED
You can configure these LEDs to illuminate when PCI Express is in
Gen2 or Gen3 mode.
D35, D36, D37 PCI Express Link LEDs
You can configure these LEDs to display the PCI Express link width
(x1, x4, x8).
Clock Circuitry
X1 125 M oscillator
125.000-MHz crystal oscillator for Gigabit Ethernet, Serial RapidIO™
(SRIO), or PCI Express.
U38 Quad-output oscillator
Programmable oscillator with default frequencies of 100 MHz,
156.25 MHz, 625 MHz, and 270 MHz.
U46 Quad-output oscillator
Programmable oscillator with default frequencies of 125 MHz,
644.53125 MHz, 282.5 MHz, and 125 MHz.
X6 148.5 M oscillator
148.500-MHz voltage controlled crystal oscillator for SDI video. This
oscillator is programmable to any frequency between 20-810 MHz.
X4 100 M oscillator
100.000-MHz (programmable to any frequency between 20–810 MHz)
crystal oscillator for PCI Express or general use such as memories.
Multiplex with CLKIN_SMA_P or CLKIN_SMA_N based on CLK_SEL
switch value.
Table 2–1. Stratix V GX FPGA Development Board Components (Part 2 of 4)
Board Reference Type Description