EP4CE40 datasheet(165/488 Pages) ALTERA

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CYIV-51008-1.7

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Cyclone IV Device Handbook,

Volume 1

May 2013

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8. Configuration and Remote System

Upgrades in Cyclone IV Devices

This chapter describes the configuration and remote system upgrades in Cyclone® IV

devices. Cyclone IV (Cyclone IV GX and Cyclone IV E) devices use SRAM cells to

store configuration data. You must download the configuration data to Cyclone IV

devices each time the device powers up because SRAM memory is volatile.

Cyclone IV devices are configured using one of the following configuration schemes:

■

Active serial (AS)

■

Active parallel (AP) (supported in Cyclone IV E devices only)

■

Passive serial (PS)

■

Fast passive parallel (FPP) (not supported in EP4CGX15, EP4CGX22, and

EP4CGX30 [except for the F484 package] devices)

■

JTAG

Cyclone IV devices offer the following configuration features:

■

Configuration data decompression (“Configuration Data Decompression” on

page 8–2)

■

Remote system upgrade (“Remote System Upgrade” on page 8–69)

System designers face difficult challenges, such as shortened design cycles, evolving

standards, and system deployments in remote locations. Cyclone IV devices help

overcome these challenges with inherent re-programmability and dedicated circuitry

to perform remote system upgrades. Remote system upgrades help deliver feature

enhancements and bug fixes without costly recalls, reduced time-to-market, and

extended product life.

Configuration

This section describes Cyclone IV device configuration and includes the following

topics:

■

“Configuration Features” on page 8–2

■

“Configuration Requirement” on page 8–3

■

“Configuration Process” on page 8–6

■

“Configuration Scheme” on page 8–8

■

“AS Configuration (Serial Configuration Devices)” on page 8–10

■

“AP Configuration (Supported Flash Memories)” on page 8–21

■

“PS Configuration” on page 8–32

May 2013

CYIV-51008-1.7

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