Altera Stratix II GX EP2SGX90 Transceiver Signal Integrit Manual de usuario descargar pdf (Pagina 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

Tex as

Instruments

PTN78020W

U11

Dual output

switching

regulator

5 V to

3.3 V

● VCCIO for FPGA

● 7-segment display

● LEDs

● Push buttons

● EPCS64 device

Tex as

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

Tex as

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

1 2 ... 30 31 32 33 34 35 36 37 38 39 40

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