Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
Configuration Features
9–43
You can perform the FPP configuration of Cyclone III device family with an intelligent
host, such as a MAX II device or microprocessor with flash memory. If your system
already contains a CFI flash memory, you can use it for the Cyclone III device family
configuration storage as well. The MAX II PFL feature in MAX II devices provides an
efficient method to program CFI flash memory devices through the JTAG interface
and the logic to control configuration from the flash memory device to the Cyclone III
device family. Both PS and FPP configuration schemes are supported using this PFL
feature.
f
For more information about the PFL, refer to
1
Cyclone III device family does not support enhanced configuration devices for PS or
FPP configurations.
FPP configuration is not supported in the E144 package of Cyclone III devices.
1
FPP Configuration Using an External Host
The FPP configuration using an external host provides a fast method to configure
Cyclone III device family. In the FPP configuration scheme, you can use an external
host device to control the transfer of configuration data from a storage device, such as
flash memory, to the target Cyclone III device family. You can store configuration data
in either an
.rbf, .hex,
or
.ttf
format. When using the external host, a design that
controls the configuration process, such as fetching the data from flash memory and
sending it to the device, must be stored in the external host device.
shows
the configuration interface connections between the Cyclone III device family and an
external device for single-device configuration.
Figure 9–20. Single-Device FPP Configuration Using an External Host
Memory
ADDR
DATA[7..0]
VCCIO(1) VCCIO(1) Cyclone III Device Family
10 k
10 k
MSEL[3..0]
CONF_DONE
nSTATUS
nCEO
nCE
(3)
External Host
(MAX II Device or
Microprocessor)
N.C. (2)
GND
DATA[7..0]
(4)
nCONFIG
DCLK
(4)
Notes to
(1) Connect the pull-up resistor to a supply that provides an acceptable input signal for the device. V
CC
must be high
enough to meet the V
IH
specification of the I/O on the device and the external host.
(2) The
nCEO
pin is left unconnected or used as a user I/O pin when it does not feed the
nCE
pin of another device.
(3) The MSEL pin settings vary for different configuration voltage standards and POR time. To connect
MSEL[3..0],
refer to
Connect the MSEL pins directly to V
CCA
or GND.
(4) All I/O inputs must maintain a maximum AC voltage of 4.1 V.
DATA[7..0]
and
DCLK
must fit the maximum overshoot
equation outlined in
After
nSTATUS
is released, the device is ready to receive configuration data and the
configuration stage begins. When
nSTATUS
is pulled high, the external host device
places the configuration data one byte at a time on the
DATA[7..0]pins.
August 2012
Altera Corporation
Cyclone III Device Handbook
Volume 1
ALTERA [ ALTERA CORPORATION ]
