Altera Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board - Manual (Page 35)

Altera Corporation Reference Manual 2–25
May 2006 Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Board Components & Interfaces
Power Supply The power supply block distributes clean power to the Stratix II GX
device. You can either power-up using an on-board regulator or an
external power supply via banana jacks. However, if the Stratix II GX
device’s power consumption is above 4 W, you should use an external
power supply and a heat sink.
The board has two types of voltage regulators:
■ Switching regulators
■ Linear regulators
Switching regulators are used for digital circuits and linear regulators are
used for analog circuits.
Table 2–19 lists board regulators’ specifications.
Table 2–19. Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board Regulators
Board
Reference
Type
Voltage
Output
Provides Power To Manufacturer
Manufacturer Part
Number
U12 Switching
regulator 16 V to 5 V ● USB UART
● Regulators
Texas
Instruments PTN78020W
U11 Dual output
switching
regulator 5 V to
3.3 V ● VCCIO for FPGA
● 7-segment display
● LEDs
● Push buttons
● EPCS64 device
Texas
Instruments PTH05060W
U13 Dual output
switching
regulator 5 V to
1.2 V ● VCCINT for FPGA Texas
Instruments PTH05060W
U14 Linear
regulator 5 V to
3.3 V ● FPGA transceiver block
(VCCA pins)
● Clock circuitry
Texas
Instruments TPS78633KTTR
U15 Dual output
linear
regulator 3.3 V to
1.5 V/1.2 V ● FPGA transceiver block
(VCCH pins) National
Semiconductor LP38842MR-ADJ
U16 Linear
regulator 3.3 V to
1.2 V ● FPGA transceiver block
(VCCT, VCCR, and VCCL
pins) National
Semiconductor LP3883ES-1.2