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AURIX™ Forum Discussions

User9635
Level 4
Level 4
50 replies posted 50 questions asked 25 replies posted
Hello Support,
In Aurix 2G TC3xx [TC387] devices, LBIST can be run when the CPU is put into 300MHz PLL Clock mode instead of default Back-up clock?
If no, then please point me to the User Manual Section/Page number where it is mentioned that should not be done at all.
I am assuming before LBIST execution one can configure PLL to 300MHz and switch the CPU clock without any adverse effect.
Please confirm.
Best Regards
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2 Replies
cwunder
Employee
Employee
25 likes received 25 solutions authored 100 sign-ins
The user's manual clearly states the LBIST clock is supplied from the backup clock and must be scaled down for a stable LBIST execution. See the SCU chapter 9-50. Review the LBISTCTRL1.LBISTFREQU settings.
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NeMa_4793301
Level 6
Level 6
10 likes received 10 solutions authored 5 solutions authored
Running the LBIST after PLL initialization will also result in various SMU alarms. Follow the startup sequence application note to avoid headaches.
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