Altera Stratix IV GX FPGA Development Board - Manual (Page 35)

Chapter 2: Board Components 2–27
General User Input/Output
August 2012 Altera Corporation Stratix IV GX FPGA Development Board
Reference Manual
Board reference S2 is the CPU reset push button, CPU_RESETn, which is an input to
both the Stratix IV GX device and MAX
II CPLD EPM2210 System Controller. The
CPU_RESETn is the master reset signal for the FPGA design loaded into the Stratix IV
GX 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 2–23 lists the user-defined push button schematic signal names and their
corresponding Stratix IV GX device pin numbers.
Table 2–24 lists the user-defined push button component reference and the
manufacturing information.
User-Defined DIP Switch
Board reference S6 is an 8-pin DIP switch. This switch is user-defined and are
provided for additional FPGA input control. There is no board-specific function for
these switches.
Table 2–25 lists the user-defined DIP switch schematic signal names and their
corresponding Stratix IV GX pin numbers.
Table 2–23. User-Defined Push Button Schematic Signal Names and Functions
Board Reference Description
Schematic Signal
Name
I/O Standard
Stratix IV GX Device
Pin Number
S2
User-defined push button
CPU_RESETn
2.5-V
V34
S3 USER_PB2 M34
S4 USER_PB1 W32
S5 USER_PB0 AK35
Table 2–24. User-Defined Push Button Component Reference and Manufacturing Information
Board Reference Description Manufacturer
Manufacturer
Part Number
Manufacturer
Website
S2 to S5 Push button Panasonic Corporation EVQPAC07K www.panasonic.com
Table 2–25. User-Defined DIP Switch Schematic Signal Names and Functions
Board Reference Description
Schematic
Signal Name
I/O Standard
Stratix IV GX Device
Pin Number
SW3.1
User-defined DIP switch that
connects to the FPGA device. When
the switch is in the OPEN or OFF
position, a logic 1 is selected. When
the switch is in the CLOSED or ON
position, a logic 0 is selected.
USER_DIPSW0
2.5-V
AL35
SW3.2 USER_DIPSW1 AC35
SW3.3 USER_DIPSW2 J34
SW3.4 USER_DIPSW3 AN35
SW3.5 USER_DIPSW4 G33
SW3.6 USER_DIPSW5 K35
SW3.7 USER_DIPSW6 AG34
SW3.8 USER_DIPSW7 AG31