AR# 53519 Vivado 2012.x - Vivado Synthesis - How does Vivado Synthesis treat KEEP or DONT_TOUCH on a state machine register upon turning on FSM extraction?

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Solution

How does Vivado Synthesis treat KEEP or DONT_TOUCH on a state machine register when FSM extraction is turned on?

When FSM extraction is turned on and there is a KEEP or DONT_TOUCH attribute on the state machine register, Vivado synthesis ignores the KEEP or DONT_TOUCH attribute.

To work around this issue, turn off FSM extraction to allow the KEEP or DONT_TOUCH to be used.

The fix to this issue will be determined in a future release ofVivado Synthesis.

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AR# 53519
Date Created	12/14/2012
Last Updated	12/14/2012
Status	Active
Type	Known Issues
Tools	Vivado

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AR# 53519 Vivado 2012.x - Vivado Synthesis - How does Vivado Synthesis treat KEEP or DONT_TOUCH on a state machine register upon turning on FSM extraction?

Description

Solution

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