EP2S15 Datasheet, PDF (121/238 Pages) Altera Corporation – Stratix II Device Family

Configuration & Testing
f
you need to support configuration input voltages of 1.8 V/1.5 V, you
should set the VCCSEL to a logic high and the V_CCIO of the bank that
contains the configuration inputs to 1.8 V/1.5 V.
For more information on multi-volt support, including information on
using TDO and nCEO in multi-volt systems, refer to the Stratix II
Architecture chapter in volume 1 of the Stratix II Device Handbook.
Configuration Schemes
You can load the configuration data for a Stratix II device with one of five
configuration schemes (see Table 3–5), chosen on the basis of the target
application. You can use a configuration device, intelligent controller, or
the JTAG port to configure a Stratix II device. A configuration device can
automatically configure a Stratix II device at system power-up.
You can configure multiple Stratix II devices in any of the five
configuration schemes by connecting the configuration enable (nCE) and
configuration enable output (nCEO) pins on each device.
Stratix II FPGAs offer the following:
■ Configuration data decompression to reduce configuration file
storage
■ Design security using configuration data encryption to protect your
designs
■ Remote system upgrades for remotely updating your Stratix II
designs
Table 3–5 summarizes which configuration features can be used in each
configuration scheme.
Table 3–5. Stratix II Configuration Features (Part 1 of 2)
Configuration
Scheme
Configuration Method
FPP
MAX II device or microprocessor and
flash device
Enhanced configuration device
AS
Serial configuration device
PS
MAX II device or microprocessor and
flash device
Enhanced configuration device
Download cable (4)
Design Security
Decompression
Remote System
Upgrade
v (1)
v (1)
v
v (2)
v
v
v
v (3)
v
v
v
v
v
v
v
v
Altera Corporation
May 2007
3–7
Stratix II Device Handbook, Volume 1