Specifications

2–18 Chapter 2: Board Components
Configuration, Status, and Setup Elements
Cyclone III 3C120 Development Board Reference Manual © March 2009 Altera Corporation
Ta bl e 2–9 lists the board-specific LEDs component reference and manufacturing
information.
Power Display (U28)
The power being measured by the MAX II CPLD and associated A/D is displayed on
a dedicated 7-segment display connected to the MAX II device called Power Display.
Although the 7-segment display is connected to the MAX II CPLD, it is also
register-controllable from the FPGA using the FSM bus.
Setup Elements
The development board includes user, JTAG control, and board-specific DIP switches.
The board also includes system reset and configuration push button switches as well
as rotary switches. This section discusses:
■ JTAG control DIP switch
■ MAX II device control DIP switch
■ System reset and configuration push buttons
D1 10 MB Illuminates when Ethernet PHY is using the 10 Mbps connection speed. Driven by the
Marvell 88E1111 PHY.
D3 100 MB Illuminates when Ethernet PHY is using the 100 Mbps connection speed. Driven by the
Marvell 88E1111 PHY.
D4 1000 M Illuminates when Ethernet PHY is using the 1000 Mbps connection speed. Driven by the
Marvell 88E1111 PHY. Also connects to Cyclone III FPGA.
D6 Duplex Illuminates when Ethernet PHY is both sending and receiving data. Driven by the
Marvell 88E1111 PHY.
D18 HSMC Port A
present
Illuminates when HSMC Port A has a board or cable plugged such that pin 160 becomes
grounded.
D19 HSMC Port B
present
Illuminates when HSMC Port B has a board or cable plugged such that pin 160 becomes
grounded.
D17 SRAM active Illuminates when SRAM is being accessed with a read or write transaction. Driven by the
MAX II CPLD.
D23 Flash active Illuminates when flash memory is being accessed with a read or write transaction. Driven by
the MAX II CPLD.
Table 2–8. Board-Specific LEDs (Part 2 of 2)
Board
Reference LED Name Description
Table 2–9. Board-Specific LEDs Component Reference and Manufacturing Information
Board Reference Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
D1, D3, D4, D6-D8,
D17-D19, D20, D22-D25
Green LED, 1206, SMT, clear lens,
2.1 V
Lumex, Inc SML-LX1206GC-TR www.lumex.com
D5 Blue LED, 1206, SMT, clear lens,
3.5 V
Lumex, Inc SML-LX1206USBC-TR www.lumex.com
D21 Red LED, 1206, SMT, clear lens,
2.0 V
Lumex, Inc SML-LX1206IC-TR www.lumex.com