Altera Cyclone II DSP Development Board - Manual (Page 73)

Altera Corporation Reference Manual 2–65
August 2006 Cyclone II DSP Development Board
Cyclone II DSP Development Board Components
Cyclone II DSP Development Board Power-Up
The Cyclone II DSP development board can be powered up in two ways:
■ 9-20 V DC power input jack (J1).
■ Bench power supplies (banana jacks), which requires removing fuses
to isolate the bench power supplies from the on-board regulators. See
“Bench Power Supplies Using Banana Jacks” on page 2–67 .
c
Before you connect a bench power supply, remove fuses on the
Cyclone II DSP development board. All fuses are LITTLEFUSE
154 007 and are 7 A. The fuses do not protect the board from
power surges.
f
For additional information about connecting cables and powering up the
Cyclone II DSP development board, see the Connecting the Cables to the
Board and PC section in the DSP Development Kit, Cyclone II Edition Getting
Started Guide.
Voltage Limiter Switches (U13-U15, U18 & U19)
Each signal passes through analog switches to protect the EP2C70 from 5-
V logic levels. Analog switches are permanently enabled. These voltage
limiters combine with J15, J22, and J23, which make up the Expansion
Prototype Connector. See
“Expansion Prototype Connector (J15, J22 &
J23)” on page 2–43 and “Power Supply” on page 2–65 .