EP4SE360F35I4 Datasheet, PDF (399/432 Pages) Altera Corporation – This section provides a complete overview of all features relating to the Stratix IV device family, which is the most architecturlly advanced

Chapter 10: Configuration, Design Security, and Remote System Upgrades in Stratix IV Devices
Quartus II Software Support
10–63
Quartus II Software Support
The Quartus II software provides the flexibility to include the remote system upgrade
interface between the Stratix IV device logic array and the dedicated circuitry,
generate configuration files for production, and allows remote programming of the
system configuration memory.
The ALTREMOTE_UPDATE megafunction is the implementation option in the
Quartus II software that you use for the interface between the remote system upgrade
circuitry and the device logic array interface. Using the megafunction block instead of
creating your own logic saves design time and offers more efficient logic synthesis
and device implementation.
ALTREMOTE_UPDATE Megafunction
The ALTREMOTE_UPDATE megafunction provides a memory-like interface to the
remote system upgrade circuitry and handles the shift register read and write
protocol in the Stratix IV device logic. This implementation is suitable for designs that
implement the factory configuration functions using a Nios II processor or user logic
in the device.
Figure 10–28 shows the interface signals between the ALTREMOTE_UPDATE
megafunction and Nios II processor or user logic.
Figure 10–28. Interface Signals between the ALTREMOTE_UPDATE Megafunction and the Nios II Processor
Nios II Processor or
User Logic
ALTREMOTE_UPDATE
read_param
write_param
param[2..0]
data_in[23..0]
reconfig
reset_timer
clock
reset
busy
data_out[23..0]
f For more information about the ALTREMOTE_UPDATE megafunction and the
description of ports shown in Figure 10–28, refer to the Remote Update Circuitry
(ALTREMOTE_UPDATE) Megafunction User Guide.
September 2012 Altera Corporation
Stratix IV Device Handbook
Volume 1