Altera Cyclone V GT FPGA Development Board - Manual (Page 31)

Chapter 2: Board Components 2–23
General User Input/Output
September 2014 Altera Corporation Cyclone V GT FPGA Development Board
Reference Manual
Table 2–16 lists the general LED schematic signal names and their corresponding
Cyclone V GT device pin numbers.
HSMC LEDs
Board references D3, D4, D19, and D20 are LEDs for the HSMC port. There are no
board-specific functions for the HSMC LEDs. The LEDs are labeled TX and RX, and
are intended to display data flow to and from the connected daughtercards. The LEDs
are driven by the Cyclone V GT device.
Table 2–17 lists the HSMC LED schematic signal names and their corresponding
Cyclone V GT device pin numbers.
PCI Express LEDs
Board references D34, D45, D35, and D44 are PCI Express LEDs for link width
indication. There are no board-specific functions for the PCI Express LEDs. You can
configure the LEDs to display the functions as listed in
Table 2–18 . The LEDs are
driven by the Cyclone V GT device.
Table 2–18 lists the PCI Express LED schematic signal names and their corresponding
Cyclone V GT device pin numbers.
Table 2–16. General LED Schematic Signal Names and Functions
Board Reference Schematic Signal Name Cyclone V GT Pin Number I/O Standard
D18 USER_LED0 AM23 2.5-V
D17 USER_LED1 AE25 2.5-V
D16 USER_LED2 AK29 2.5-V
D15 USER_LED3 AL31 2.5-V
D11 USER_LED4 AF25 2.5-V
D10 USER_LED5 AJ27 2.5-V
D9 USER_LED6 AC22 2.5-V
D8 USER_LED7 AH27 2.5-V
Table 2–17. HSMC LED Schematic Signal Names and Functions
Board Reference Schematic Signal Name Cyclone V GT Pin Number I/O Standard
D19 HSMA_RX_LED D12 2.5-V
D20 HSMA_TX_LED B3 2.5-V
D3 HSMB_RX_LED B30 2.5-V
D4 HSMB_TX_LED C24 2.5-V
Table 2–18. PCI Express LED Schematic Signal Names and Functions
Board
Reference
Schematic
Signal Name
Cyclone V GT
Pin Number
I/O Standard Description
D35, D44 PCIE_LED_X1 AK19 2.5-V
Green LED. Configure this LED to display the
PCI Express link width x1.
D34, D45 PCIE_LED_X4 AD22 2.5-V
Green LED. Configure this LED to display the
PCI Express link width x4.