Hsmc Leds; Pci Express Leds - Altera Cyclone V Reference Manual

2–24
Table 2–18. PCI Express LED Schematic Signal Names and Functions
Board
Reference
D35, D44
D34, D45
Cyclone V GT FPGA Development Board
Reference Manual
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Table 2–16 lists the general 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
D18
USER_LED0
D17
USER_LED1
D16
USER_LED2
D15
USER_LED3
D11
USER_LED4
D10
USER_LED5
D9
USER_LED6
D8
USER_LED7

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.
Table 2–17. HSMC LED Schematic Signal Names and Functions
Board Reference
D19
HSMA_RX_LED
D20
HSMA_TX_LED
D3
HSMB_RX_LED
D4
HSMB_TX_LED

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
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.
Schematic Cyclone V GT
Signal Name Pin Number
PCIE_LED_X1
PCIE_LED_X4
Schematic Signal Name Cyclone V GT Pin Number
Schematic Signal Name Cyclone V GT Pin Number
I/O Standard
Green LED. Configure this LED to display the
AK19 2.5-V
PCI Express link width x1.
Green LED. Configure this LED to display the
AD22 2.5-V
PCI Express link width x4.
Chapter 2: Board Components
General User Input/Output
I/O Standard
1.5-V
AM23
1.5-V
AE25
1.5-V
AK29
1.5-V
AL31
1.5-V
AF25
1.5-V
AJ27
1.5-V
AC22
1.5-V
AH27
I/O Standard
D12 2.5-V
B3 2.5-V
B30 2.5-V
C24 2.5-V
Table 2–18. The LEDs are
Description
August 2017 Altera Corporation