Altera Cyclone II DSP Development Board - Manual (Page 65)

Altera Corporation Reference Manual 2–57
August 2006 Cyclone II DSP Development Board
Cyclone II DSP Development Board Components
Status LEDs &
Reset/Power
Switches This section describes the status LEDs and reset switches on the
Cyclone II DSP development board. Some of the switches are user-
defined.
Power (D1) & Status (D10) LEDs
The power LED (D1) turns on indicating that voltage is supplied to the
DC jack, J1, and is being distributed to the Cyclone II DSP development
board’s on-board power regulators. For information about powering up
the Cyclone II DSP development board, see
“Power Switch (SW1)” on
page 2–57 .
The Cyclone II DSP development board has one CONF DONE LED (D10)
that turns on to indicate successful configuration of the EP2C70 FPGA.
This LED is driven by the EP2C70(U12), pin R23 (CONF_DONE). See
Table 2–29 .
Power Switch (SW1)
SW1 is a power switch that connects the 9-20 V DC input from the DC
power jack, J1, to the on-board power regulators. When SW1 is in the ON
position, LED (D1) turns on.
User Defined Reset (SW6) Push-Button
SW6 is a USER RESET momentary-contact push button. It is used as
defined by the user, and could be used for initialization and reset of a user
design running on the Cyclone II DSP development board. This button
must first be defined by the user before it can be used. See
Table 2–30 .
Table 2–29. Status & Power LEDs Pin-Outs
LED Name Schematic Signal Name Description
D1 DC_IN DC Input Power OK
D10 EP2C_CONFIG_DONE Cyclone II DSP development board
successfully configured