CDPCLK4 datasheet(181/274 Pages) ALTERA

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Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family

9–23

Configuration Features

August 2012

Altera Corporation

Cyclone III Device Handbook

Volume 1

In production environments, serial configuration devices are programmed using

multiple methods. Altera programming hardware or other third-party programming

hardware is used to program blank serial configuration devices before they are

mounted onto PCBs. Alternatively, you can use an on-board microprocessor to

program the serial configuration device in-system by porting the reference C-based

SRunner software driver provided by Altera.

A serial configuration device is programmed in-system by an external microprocessor

using the SRunner software driver. The SRunner software driver is a software driver

developed for embedded serial configuration device programming, which is easily

customized to fit in different embedded systems. The SRunner software driver is able

to read a Raw Programming Data (.rpd) file and write to the serial configuration

devices. The serial configuration device programming time using the SRunner

software driver is comparable to the programming time with the Quartus II software.

f For more information about the SRunner software driver, refer to AN 418: SRunner:

An Embedded Solution for Serial Configuration Device Programming and the source code

at the Altera website (www.altera.com).

AP Configuration (Supported Flash Memories)

The AP configuration scheme is for Cyclone III devices only. In the AP configuration

scheme, Cyclone III devices are configured using commodity 16-bit parallel flash

memory. These external non-volatile configuration devices are industry standard

microprocessor flash memories. The flash memories provide a fast interface to access

the configuration data. The speed-up in configuration time is mainly due to the 16-bit

wide parallel data bus, which is used to retrieve data from the flash memory.

Some of the smaller Cyclone III devices or package options do not support the AP

configuration scheme and do not have the MSEL[3] pin. Table 9–10 lists the supported

AP configuration scheme for each Cyclone III device.

During device configuration, Cyclone III devices read configuration data using the

parallel interface and configure their SRAM cells. This scheme is referred to as the AP

configuration scheme because the device controls the configuration interface. This

scheme contrasts with the FPP configuration scheme, where an external host controls

the interface.

Table 9–10. Supported AP Configuration Scheme for Cyclone III Devices

Device

Package Options

E144

M164

Q240

F256

F324

F484

F780

U256

U484

EP3C5

———

——————

EP3C10

———

——————

EP3C16

—

——

EP3C25

—

————

EP3C40

—

EP3C55

—

EP3C80

—

EP3C120

———

——

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