Altera Transceiver Signal Integrity Development Kit, Stratix IV GT Edition - Manual (Page 27)

Chapter 2: Board Components 2–17
General User Input/Output
November 2011 Altera Corporation Transceiver Signal Integrity Development Kit,
Stratix IV GT Edition Reference Manual
User LEDs
A bank of eight green, surface mount LEDs (SM1206 type) are provided for general
purpose use. The cathodes of these LEDs each connects to an FPGA I/O pin while the
anodes are pulled to 2.5 V through a current limiting resistor. Driving the
corresponding FPGA I/O pin low illuminates the LED. Driving the pin high turns the
LED off.
Table 2–13 lists the assignment for each user LED.
LCD
The development board includes a 16 character × 2 line LCD. The display connects
directly to the FPGA device.
Table 2–14 lists the LCD pin assignments.
Table 2–13. User LED Pin-Out (Green)
Board
Reference
Description
Schematic
Signal Name
I/O Standard
Stratix IV GT
Device
Pin Number
Other
Connections
D8
General purpose green
surface mount (type 1206)
User 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.
USR_LED0
2.5-V CMOS
U33 pin AW29 160 Ω to 2.5 V
D9 USR_LED1 U33 pin AV29 160 Ω to 2.5 V
D10 USR_LED2 U33 pin AU29 160 Ω to 2.5 V
D11 USR_LED3 U33 pin AT29 160 Ω to 2.5 V
D12 USR_LED4 U33 pin AW30 160 Ω to 2.5 V
D13 USR_LED5 U33 pin AT30 160 Ω to 2.5 V
D14 USR_LED6 U33 pin AP30 160 Ω to 2.5 V
D15 USR_LED7 U33 pin AN30 160 Ω to 2.5 V
Table 2–14. Seven-Segment Display Pin-Out
Board
Reference
Description
Schematic
Signal Name
I/O Standard
Stratix IV GT
Device
Pin Name
Other
Connections
LCD LCD DATA 0 LCD_DATA0
2.5-V CMOS
U33 pin B17 J24 pin 7
LCD LCD DATA 1 LCD_DATA1 U33 pin B19 J24 pin 8
LCD LCD DATA 2 LCD_DATA2 U33 pin D21 J24 pin 9
LCD LCD DATA 3 LCD_DATA3 U33 pin D22 J24 pin 10
LCD LCD DATA 4 LCD_DATA4 U33 pin D23 J24 pin 11
LCD LCD DATA 5 LCD_DATA5 U33 pin E22 J24 pin 12
LCD LCD DATA 6 LCD_DATA6 U33 pin E23 J24 pin 13
LCD LCD DATA 7 LCD_DATA7 U33 pin F23 J24 pin 14
LCD LCD enable signal LCD_EN U33 pin C22 J24 pin 6
LCD LCD data/control signal LCD_D_Cn U33 pin A18 J24 pin 4
LCD LCD write enable strobe LCD_Wen U33 pin A17 J24 pin 5