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 issue is fixed in 2013.1 release of Vivado Synthesis.
| AR# 53519 | |
|---|---|
| 日期 | 06/21/2013 |
| 状态 | Active |
| Type | 已知问题 |
| Tools | |