EP4CE40 datasheet(265/488 Pages) ALTERA

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CYIV-51011-1.3

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Cyclone IV Device Handbook,

Volume 1

May 2013

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ISO

9001:2008

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11. Power Requirements for Cyclone IV

Devices

This chapter describes information about external power supply requirements,

hot-socketing specifications, power-on reset (POR) requirements, and their

implementation in Cyclone IV devices.

This chapter includes the following sections:

■

“External Power Supply Requirements” on page 11–1

■

“Hot-Socketing Specifications” on page 11–2

■

“Hot-socketing Feature Implementation” on page 11–3

■

“Power-On Reset Circuitry” on page 11–3

External Power Supply Requirements

This section describes the different external power supplies required to power

Cyclone IV devices. Table 11–1 and Table 11–2 list the descriptions of external power

supply pins for Cyclone IV GX and Cyclone IV E devices, respectively.

f For each Altera recommended power supply’s operating conditions, refer to the

Cyclone IV Device Datasheet chapter.

f For power supply pin connection guidelines and power regulator sharing, refer to the

Cyclone IV Device Family Pin Connection Guidelines.

Table 11–1. Power Supply Descriptions for the Cyclone IV GX Devices (Part 1 of 2)

Power Supply Pin

Nominal Voltage Level (V)

Description

VCCINT

1.2

Core voltage, PCI Express (PCIe) hard IP block, and

transceiver physical coding sublayer (PCS) power

supply

VCCA (1)

2.5

PLL analog power supply

VCCD_PLL

1.2

PLL digital power supply

VCCIO (2)

1.2, 1.5, 1.8, 2.5, 3.0, 3.3

I/O banks power supply

VCC_CLKIN (3), (4)

1.2, 1.5, 1.8, 2.5, 3.0, 3.3

Differential clock input pins power supply

VCCH_GXB

2.5

Transceiver output (TX) buffer power supply

VCCA_GXB

2.5

Transceiver physical medium attachment (PMA) and

auxiliary power supply

May 2013

CYIV-51011-1.3

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