Active Serial Multi-Device Configuration - Altera Cyclone V Device Handbook

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Active Serial Multi-Device Configuration

You can configure multiple Cyclone V devices that are connected to a chain. Only AS x1 mode supports

multi-device configuration.

The first device in the chain is the configuration master. Subsequent devices in the chain are configuration

Pin Connections and Guidelines

Observe the following pin connections and guidelines for this configuration setup:

Hardwire the

subsequent devices in the chain, hardwire their

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Tie the following pins of all devices in the chain together:

By tying the

at the same time. If any device in the chain detects an error, configuration stops for the entire chain and

you must reconfigure all the devices. For example, if the first device in the chain flags an error on the

pin, it resets the chain by pulling its

Using Multiple Configuration Data

To configure multiple Cyclone V devices in a chain using multiple configuration data, connect the devices

to an EPCS or EPCQ device, as shown in the following figure.

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pins of the first device in the chain to select the AS configuration scheme. For

devices that support the PS configuration can also be part of the chain as a configuration

are buffered every fourth device to prevent signal integrity and clock skew

Configuration, Design Security, and Remote System Upgrades in Cyclone V Devices

pins to select the PS configuration scheme. Any

pins together, the devices initialize and enter user mode

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