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Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family

9–75

Remote System Upgrade

August 2012

Altera Corporation

Cyclone III Device Handbook

Volume 1

Functional Description

The dedicated remote system upgrade circuitry in Cyclone III device family manages

remote configuration and provides error detection, recovery, and status information.

User logic or a Nios II processor implemented in the Cyclone III device family logic

array provides access to the remote configuration data source and an interface to the

configuration memory.

1 Configuration memory refers to serial configuration devices (EPCS) or supported

parallel flash memory, and depends on the configuration scheme that you use.

The remote system upgrade process of Cyclone III device family involves the

following steps:

1. A Nios II processor (or user logic) implemented in the Cyclone III device family

logic array receives new configuration data from a remote location. The connection

to the remote source is a communication protocol such as the transmission control

protocol/Internet protocol (TCP/IP), peripheral component interconnect (PCI),

user datagram protocol (UDP), universal asynchronous receiver/transmitter

(UART), or a proprietary interface.

2. The Nios II processor (or user logic) writes this new configuration data into a

configuration memory.

3. The Nios II processor (or user logic) starts a reconfiguration cycle with the new or

updated configuration data.

4. The dedicated remote system upgrade circuitry detects and recovers from any

error that might occur during or after the reconfiguration cycle, and provides error

status information to the user design.

Figure 9–32 shows the steps required for performing remote configuration updates

(the numbers in Figure 9–32 coincide with steps 1–4).

Figure 9–32. Functional Diagram of Cyclone III Device Family Remote System Upgrade

Development

Location

Device Configuration

Cyclone III

Device Family

Control Module

Data

Configuration

Memory

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