9–34
Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
Configuration Features
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.
Figure 9–13. Configuration Boot Address in AP Flash Memory Map
Bottom Parameter Flash Memory
Top Parameter Flash Memory
128-Kb
parameter area
Other data/code
Other data/code
Cyclone III
Default
Boot
Cyclone III
Default
Boot
Address
Address
Configuration
Data
Configuration
Data
x010000 (1)
x00FFF
x010000 (1)
x00FFF
Other data/code
16-bit word
128-Kb
parameter area
16-bit word
x000000
x000000
bit[15]
bit[0]
bit[15]
bit[0]
Note to Figure 9–13:
(1) The default configuration boot address is x010000 when represented in 16-bit word addressing.
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
1
For more information about the PFL, refer to Parallel Flash Loader Megafunction User
Guide.
Cyclone III device family does not support enhanced configuration devices for PS or
FPP configurations.
Cyclone III Device Handbook
Volume 1
August 2012 Altera Corporation
ALTERA [ ALTERA CORPORATION ]
