Altera Cyclone V GX FPGA Development Board - Manual (Page 30)

2–22 Chapter 2: Board Components
General User Input/Output
Cyclone V GX FPGA Development Board May 2013 Altera Corporation
Reference Manual
PCI Express LEDs
Board references D8 through D10 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 GX device.
Table 2–18 lists the PCI Express LED schematic signal names and their corresponding
Cyclone V GX device pin numbers.
Character LCD
The development board includes a single 14-pin 0.1" pitch dual-row header that
interfaces to a 2 line × 16 character Lumex character LCD. The character LCD has a
14-pin receptacle that mounts directly to the board's 14-pin header, so it can be easily
removed for access to components under the display. You can also use the header for
debugging or other purposes.
Table 2–19 summarizes the character LCD pin assignments. The signal names and
directions are relative to the Cyclone V GX device.
Table 2–18. PCI Express LED Schematic Signal Names and Functions
Board
Reference
Schematic
Signal Name
Cyclone V GX
Pin Number
I/O Standard Description
D8 PCIE_LED_X1 AD28 2.5-V
Green LED. Configure this LED to display the
PCI Express link width x1.
D9 PCIE_LED_X4 AC29 2.5-V
Green LED. Configure this LED to display the
PCI Express link width x4.
D10 PCIE_LED_G1 AB28 2.5-V
Green LED. Configure this LED to display the
PCI Express Gen1 link.
Table 2–19. Character LCD Pin Assignments, Schematic Signal Names, and Functions
Board
Reference (J18)
Schematic Signal Name
Cyclone V GX
Pin Number
I/O Standard Description
7 LCD_DATA0 T10 2.5-V LCD data bus
8 LCD_DATA1 AH5 2.5-V LCD data bus
9 LCD_DATA2 AH4 2.5-V LCD data bus
10 LCD_DATA3 U8 2.5-V LCD data bus
11 LCD_DATA4 T9 2.5-V LCD data bus
12 LCD_DATA5 AH6 2.5-V LCD data bus
13 LCD_DATA6 AG6 2.5-V LCD data bus
14 LCD_DATA7 R12 2.5-V LCD data bus
4 LCD_D_Cn D17 2.5-V LCD data or command select
5 LCD_WEn E17 2.5-V LCD write enable
6 LCD_CSn C11 2.5-V LCD chip select