Article ID: 000084257 Content Type: Troubleshooting Last Reviewed: 09/11/2012

Can a long rise time on CONF_DONE cause configuration to fail?

Environment

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Description If the rise time of CONF_DONE is too slow, the FLEX device could register CONF_DONE while it is transitioning, causing the device's internal statemachine to enter an illegal state. To avoid this illegal state, make sure the CONF_DONE signal has a fast rise time by placing a smaller pull-up resistor on the signal. This solution applies to all configuration modes.

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Flex® 10K