Altera Stratix IV E FPGA Development Board - Manual (Page 34)

2–26 Chapter 2: Board Components
General User Input/Output
Stratix IV E FPGA Development Board Reference Manual May 2011 Altera Corporation
General User-Defined LEDs
Board references D23 through D30 are eight user-defined LEDs which allow status
and debugging signals to be driven to the LEDs from the designs loaded into the
Stratix IV E FPGA 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 2–26 lists the user-defined LED schematic signal names and their corresponding
Stratix IV E FPGA pin numbers.
Table 2–27 lists the user-defined LED component reference and the manufacturing
information.
HSMC User-Defined LEDs
The HSMC port A and B have three LEDs located nearby. The LEDs are labeled TX,
RX, and PSNTn. The PSNTn LED illuminates when a daughtercard is plugged into
the respective HSMC port. There are no board-specific functions for the TX and RX
LEDs but they are intended to display data flow to and from the connected
daughtercards and are driven by the Stratix IV E FPGA device.
Table 2–26. User-Defined LED Schematic Signal Names and Functions
Board
Reference
Description
Schematic
Signal Name
I/O
Standard
Stratix IV E Device
Pin Number
D30
User-defined LEDs.
Driving a logic 0 on the I/O pin turns the LED ON.
Driving a logic 1 on the I/O pin turns the LED OFF.
USER_LED0
2.5-V
F21
D29 USER_LED1 C23
D28 USER_LED2 B23
D27 USER_LED3 A23
D26 USER_LED4 D19
D25 USER_LED5 C19
D24 USER_LED6 F19
D23 USER_LED7 E19
Table 2–27. User-Defined LED Component Reference and Manufacturing Information
Board Reference
Device
Description
Manufacturer
Manufacturer
Part Number
Manufacturer Website
D23-D30 Green LEDs Lumex Inc. SML-LX1206GC-TR www.lumex.com