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

2–22 Chapter 2: Board Components
General User Input/Output
Cyclone IV GX FPGA Development Board May 2013 Altera Corporation
Reference Manual
User-Defined LEDs
The development board includes general user-defined LEDs and HSMC user-defined
LEDs. This section describes all user-defined LEDs. For information on board-specific
or status LEDs, refer to
“Status Elements” on page 2–16 .
General User-Defined LEDs
Board references D7–D10 and D12–D15 are eight user-defined LEDs which allow
status and debugging signals to be driven to the LEDs from the FPGA designs loaded
into the Cyclone IV GX device. The LEDs illuminate when a logic 0 is driven, and
turns off when a logic 1 is driven. There is no board-specific function for these LEDs.
Table 2–20 lists the user-defined LED schematic signal names and their corresponding
Cyclone IV GX pin numbers.
Table 2–21 lists the user-defined LED component reference and the manufacturing
information.
HSMC User-Defined LEDs
The HSMC port A and B have two LEDs located nearby. There are no board-specific
functions for the HSMC LEDs. However, the LEDs are labeled TX and RX, and are
intended to display data flow to and from the connected HSMC cards. The LEDs are
driven by the Cyclone IV GX device.
Table 2–20. User-Defined LED Schematic Signal Names and Functions
Board Reference Description
Schematic
Signal Name
I/O Standard
Cyclone IV GX Device
Pin Number
D15
User-defined LEDs.
Driving a logic 0 on the I/O port turns
the LED ON. Driving a logic 1 on the
I/O port turns the LED OFF.
USER_LED0
2.5-V
E4
D14 USER_LED1 C7
D13 USER_LED2 A4
D12 USER_LED3 F6
D10 USER_LED4 D4
D9 USER_LED5 J9
D8 USER_LED6 D12
D7 USER_LED7 B6
Table 2–21. User-Defined LED Component Reference and Manufacturing Information
Board Reference Device Description Manufacturer Manufacturer Part Number Manufacturer Website
D7–D10, D12–D15 Green LEDs Lumex, Inc. SML-LXT0805GW-TR www.lumex.com