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2–24
Chapter 2: Board Components
General User Input/Output
Cyclone V GT FPGA Development Board
August 2017
Altera Corporation
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.