Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
9–33
Configuration Features
Programming Parallel Flash Memories
Supported parallel flash memories are external non-volatile configuration devices.
They are industry standard microprocessor flash memories. For more information
about the supported families for the commodity parallel flash, refer to Table 9–11 on
page 9–24.
Cyclone III devices in a single- or multiple-device chains support in-system parallel
flash programming with the JTAG interface using the flash loader megafunction. For
Cyclone III devices, the board-intelligent host or download cable uses four JTAG pins
to program the parallel flash in system, even if the host or download cable cannot
access the configuration pins of the parallel flash.
f
1
For more information about using the JTAG pins on Cyclone III devices to program
the parallel flash in-system, refer to AN 478: Using FPGA-Based Parallel Flash Loader
(PFL) with the Quartus II Software.
In the AP configuration scheme, the default configuration boot address is 0×010000
when represented in 16-bit word addressing in the supported parallel flash memory
(Figure 9–13). In the Quartus II software, the default configuration boot address is
0x020000 because it is represented in 8-bit byte addressing. Cyclone III devices
configure from word address 0x010000, which is equivalent to byte address 0x020000.
The Quartus II software uses byte addressing for the default configuration boot
address. You must set the start address field to 0x020000.
August 2012 Altera Corporation
Cyclone III Device Handbook
Volume 1
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