Altera Cyclone III Development Board - Manual (Page 27)

Chapter 2: Board Components 2–17
Configuration, Status, and Setup Elements
© March 2009 Altera Corporation Cyclone III 3C120 Development Board Reference Manual
Flash Programming over USB Interface
The flash memory can be programmed at any time the board is powered up by using
the USB 2.0 interface and the Quartus II Programmer ’s JTAG mode.
The development kit implements the Altera PFL megafunction for flash
programming. The PFL is a block of logic that is programmed into an Altera
programmable logic device (FPGA or CPLD). The PFL functions as a utility for
writing to a compatible flash device. The development kit ships with a pre-built PFL
design called cycloneIII_3c120_dev_pfl. The PFL design is programmed onto the
FPGA whenever the flash is to be written using the Quartus II software.
f For more information about:
■ PFL megafunction, refer to AN386: Using the Parallel Flash Loader with the Quartus II
Software .
■ Basic flash programming instructions for the development board, refer to the
Programming the Flash Device section of the
Cyclone III Development User Guide .
Status Elements
The development board includes general user, board specific, and HSMC user LEDs.
This section discusses board-specific LEDs as well as the power display device.
f
For information about general and HSMC user-defined LEDS, refer to “User-Defined
LEDs” on page 2–27 .
Board Specific LEDs
There are 14 board-specific LEDs, which are factory designated. Table 2–8 lists the
LED board reference, name, and description.
Table 2–8. Board-Specific LEDs (Part 1 of 2)
Board
Reference LED Name Description
D5 Power Illuminates when board power switch SW2 is on.
(Requires 14 V to 20 V input to DC input jack J2)
D25 CONF DONE Illuminates when FPGA is successfully configured. Driven by Cyclone III FPGA.
D20 Loading Illuminates when MAX II CPLD is actively configuring the FPGA. Driven by the MAX II CPLD.
D21 Error Illuminates when MAX II CPLD fails to successfully configure the FPGA. Driven by the
MAX II CPLD.
D24 Factory Illuminates when FPGA is configured with the default factory FPGA design. Driven by the
MAX II CPLD.
D22 User Illuminates when FPGA is configured with a design other than the default factory FPGA
design. Driven by the MAX II CPLD.
D7 ENET TX Illuminates when transmit data is active from the Ethernet PHY. Driven by the
Marvell 88E1111 PHY.
D8 ENET RX Illuminates when receive data is active from the Ethernet PHY. Driven by the
Marvell 88E1111 PHY.