Altera Corporation
12–5
September 2004
Stratix Device Handbook, Volume 2
Remote System Configuration with Stratix & Stratix GX Devices
Figure 12–4. Local Configuration Mode
In local configuration mode, one application configuration is available to
the device. For remote or local configuration mode selection, see
Remote System Configuration Components
The following components are used in Stratix and Stratix GX devices to
support remote and local configuration modes:
■
Page mode feature
■
Factory configuration
■
Application configuration
■
Watchdog timer
■
Remote update sub-block
■
Remote configuration registers
A description of each component follows.
Page Mode Feature
The page mode feature enables Stratix and Stratix GX devices to select a
location to read back data for configuration. The enhanced configuration
device can receive and store up to eight different configuration files (one
factory and seven application files). Selection of pages to read from is
performed through the PGM[2..0] pins on the Stratix or Stratix GX
device and enhanced configuration devices. These pins in the Stratix or
Stratix GX device can be designated user I/O pins during standard
configuration mode, but in remote system configuration mode, they are
dedicated output pins.
Figure 12–5 shows the page mode feature in
Stratix or Stratix GX devices and enhanced configuration devices.
Power Up or
nCONFIG Assertion
nCONFIG
Configuration
Error
Configuration Error
Application
Configuration
PGM[001]
Factory
Configuration
PGM[000]