Specifications

Chapter 2: Board Components 2–21
Configuration, Status, and Setup Elements
© March 2009 Altera Corporation Cyclone III 3C120 Development Board Reference Manual
Ta bl e 2–15 lists the push-button switch component reference and manufacturing
information.
f For information about user-defined push buttons, refer to “User-Defined Push Button
Switches” on page 2–26.
POWER SELECT Rotary Switch
A 16-position rotary switch, board reference SW4, is used to select the current power
rail whose power is being measured and displayed on the power display. The rotary
switch is connected to the MAX II CPLD, but it also registers readable by the FPGA
using the FSM shared bus (flash, SRAM, and MAX II device). Table 2–16 lists the
power select rotary switch number, name, power pin, and description.
Table 2–14. Push Button Switch Signal Name and Function
Board
Reference Description
I/O
Standard
Schematic
Signal Name
Cyclone III
Device
Pin Number
MAX II
Device
Pin Number
S7 User defined push button 1.8 V FACTORY_CONFIG —A10
S6 User defined push button 1.8 V RESET_CONFIGn —R16
S5 User defined push button 1.8 V CPU_RESET T21 M9
Table 2–15. Push-Button Switch Component Reference and Manufacturing Information
Board
Reference Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
S5-S7 Push button switch Panasonic EVQAPAC07K www.panasonic.com
Table 2–16. Power Select Rotary Switch Number, Name, Pin, and Description (Part 1 of 2)
Number
Schematic
Signal Name Power Pin Name Description
0 1.2V_INT VCCINT FPGA core power
1 1.2V_VCCD VCCD_PLL FPGA PLL digital power
2 2.5V_VCCA VCCA FPGA PLL analog power and auxiliary circuit
power
3 1.8V_IO_B3_B4 VCCIO3, VCCIO4 FPGA I/O power banks 3, 4
4 1.8V_IO_B7_B8 VCCIO7, VCCIO8 FPGA I/O power banks 7, 8
5 2.5V_IO_B1_B2 VCCIO1, VCCIO2 FPGA I/O power banks 1, 2
6 2.5V_IO_B5_B6 VCCIO5, VCCIO6 FPGA I/O power banks 5, 6
7 1.2V — All non-FPGA 1.2-V power
(Ethernet)
8 1.8V — All non-FPGA 1.8-V power
(SRAM, Flash, MAX II, and DDR2 devices)
9 2.5V — All non-FPGA 2.5-V power
(Ethernet, LEDs, LCD)
A 3.3V — All 3.3-V power (voltage only) (1)
B 5.0V — All 5.0-V power (voltage only) (1)