EP3C80 datasheet(192/274 Pages) ALTERA

192 / 274 page

9–34

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

Configuration Features

Cyclone III Device Handbook

August 2012

Altera Corporation

Volume 1

The default configuration boot addressing allows the system to use special parameter

blocks in the flash memory map. Parameter blocks are at the top or bottom of the

memory map. The configuration boot address in the AP configuration scheme is

shown in Figure 9–13. You can change the default configuration default boot address

0x010000

to any desired address using the APFC_BOOT_ADDR JTAG instruction. For

more information about the APFC_BOOT_ADDR JTAG instruction, refer to “JTAG

Instructions” on page 9–60.

PS Configuration

You can perform PS configuration on Cyclone III device family with an external

intelligent host, such as a MAX II device, microprocessor with flash memory, or a

download cable. In the PS scheme, an external host controls the configuration.

Configuration data is clocked into the target Cyclone III device family using the

DATA[0]

pin at each rising edge of DCLK.

If your system already contains a common flash interface (CFI) flash memory, you can

use it for the Cyclone III device family configuration storage as well. The MAX II PFL

feature provides an efficient method to program CFI flash memory devices through

the JTAG interface and provides the logic to control the configuration from the flash

memory device to the Cyclone III device family. Both PS and FPP configuration

schemes are supported using the PFL feature.

f For more information about the PFL, refer to Parallel Flash Loader Megafunction User

Guide.

1 Cyclone III device family does not support enhanced configuration devices for PS or

FPP configurations.

Figure 9–13. Configuration Boot Address in AP Flash Memory Map

Note to Figure 9–13:

(1) The default configuration boot address is x010000 when represented in 16-bit word addressing.

Other data/code

Configuration

Data

Configuration

Data

128-Kb

parameter area

x000000

Other data/code

x010000 (1)

x00FFF

x000000

128-Kb

parameter area

Bottom Parameter Flash Memory

Top Parameter Flash Memory

16-bit word

bit[15]

bit[0]

16-bit word

bit[15]

Cyclone III

Default

Boot

Address

x010000 (1)

x00FFF

Cyclone III

Default

Boot

Address

bit[0]

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