EP4CE40 datasheet(196/488 Pages) ALTERA

196 / 488 page

8–32

Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices

Configuration

Cyclone IV Device Handbook,

May 2013

Altera Corporation

Volume 1

The default configuration boot address 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. Figure 8–12 shows the configuration boot address in the AP

configuration scheme. You can change the default configuration default boot address

0×010000 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 8–57.

PS Configuration

You can perform PS configuration on Cyclone IV devices 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 IV device through DATA[0] at each rising edge

of DCLK.

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

use it for Cyclone IV device configuration storage as well. The MAX II PFL feature

provides an efficient method to program CFI flash memory devices through the JTAG

interface and the logic to control the configuration from the flash memory device to

the Cyclone IV device.

f For more information about the PFL, refer to AN 386: Using the Parallel Flash Loader

with the Quartus II Software.

1 Cyclone IV devices do not support enhanced configuration devices for PS

configuration.

Figure 8–12. Configuration Boot Address in AP Flash Memory Map

Note to Figure 8–12:

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

Other data/code

Configuration

Data

128-Kbit

parameter area

Cyclone IV E

Default

Boot

Address

x010000 (1)

x00FFFF

x000000

Other data/code

Configuration

Data

Other data/code

Cyclone IV E

Default

Boot

Address

x010000

(1)

x00FFFF

x000000

128-Kbit

parameter area

Bottom Parameter Flash Memory

Top Parameter Flash Memory

16-bit word

bit[15]

bit[0]

16-bit word

bit[15]

bit[0]

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