Altera Stratix IV E FPGA Development Board - Manual (Page 33)

Chapter 2: Board Components 2–25
General User Input/Output
May 2011 Altera Corporation Stratix IV E FPGA Development Board Reference Manual
The board reference S4 is the CPU reset push-button switch, CPU_RESETn, which is an
input to the Stratix IV E FPGA device. The CPU_RESETn is intended to be the master
reset signal for the FPGA design loaded into the Stratix IV E device. The CPU_RESETn
signal must be enabled within the Quartus II software for this reset function to work.
Otherwise, the CPU_RESETn acts as a regular I/O pin. When enabled in the Quartus II
software, and then pulled high on the board, this switch resets every register within
the FPGA.
Table 2–24 lists the user-defined push-button switch schematic signal names and their
corresponding Stratix IV E FPGA device pin numbers.
Table 2–25 lists the user-defined push-button switch component reference and the
manufacturing information.
User-Defined LEDs
The development board includes general 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 2–15 .
Table 2–24. User-Defined Push-Button Switch Schematic Signal Names and Functions
Board
Reference
Description
Schematic Signal
Name
I/O
Standard
Stratix IV E
Device Pin
Number
Other
Connections
S1
Reset configuration push-button switch.
Driven to the MAX II CPLD System
Controller to reconfigure the FPGA from
flash memory.
RESET_CONFIGn
2.5-V
— U10.R16
S2
Factory configuration push-button
switch. Driven to the MAX II CPLD
System Controller to reconfigure the
FPGA to the default factory design.
FACTORY_CONFIGn — U10.A10
S3
User-defined push-button switch. Driven
to the MAX II CPLD System Controller.
MAX_PB (Labeled as
USER_1/USER_2 on
the board)
— U10.D4
S4
CPU reset push-button switch. Driven to
the Stratix IV E device to reset the FPGA.
CPU_RESETn Y4 —
S5
User-defined reset push-button switch.
Driven to MAX II CPLD and Stratix IV E
device for logic reset.
SYS_RESETn U31 U10.M9
S6
User-defined push-button switch. Driven
to the Stratix IV E device.
USER_PB0 L17 —
S7 USER_PB1 F16 —
S8 USER_PB2 E16 —
S9 USER_PB3 K17 —
Table 2–25. User-Defined Push-button Switch Component Reference and Manufacturing Information
Board
Reference
Description Manufacturer
Manufacturer
Part Number
Manufacturer Website
S1-S9
Push-Button
Switch
Panasonic EVQPAC07K
www.panasonic.com/industrial/components/components.
html