AM2632: Are both R5F cores in one CPU cluster and can operate in lockstep mode?

Robert Finger

Part Number: AM2632

Team,

From the datasheet it's not clear if the two R5F cores are from the same cluster, or from separate ones. So can the two R5F cores in AM2632 operate in lockstep mode?

Thanks,
Robert

over 1 year ago

0 Kowshik Gudimetla over 1 year ago

TI__Genius 15435 points

Hi,

Please expect the delay in response due to weekend.

Thanks

0 Sri Vidya Gunturi over 1 year ago in reply to Kowshik Gudimetla

TI__Expert 7580 points

Hi Robert

There are two R5 clusters:

R50 and R51.

R50 cluster has two cores:

R50_0 and R50_1

Lockstep mode:

When this cluster is configured for lockstep mode, only one core can be used - R50_0.

R50_1 is disabled and cannot be connected.

Same is applicable for he R51 cluster in lockstep mode.

More information is available here:

e2e.ti.com/.../faq-am2634-how-to-choose-setup-the-dual-core-with-lockstep-feature

Thanks & regards

Sri Vidya

0 Robert Finger over 1 year ago in reply to Sri Vidya Gunturi

TI__Genius 16202 points

Hi Sri Vidya,

The question is about AM2632! This device only has two cores.

So are the two cores from one cluster and can operate in lockstep mode?

Or are the two AM2632 A53 cores from different clusters and therefore can't be use in lockstep?

Thanks,
Robert

+1 Sri Vidya Gunturi over 1 year ago in reply to Robert Finger

TI__Expert 7580 points

Hi Robert

The two cores in AM2632 belong to two different clusters.

Hence the two cores are always and only in lockstep mode. It is a Dual Lockstep core.

Thanks & Regards

Sri Vidya

Processors

Processors forum

AM2632: Are both R5F cores in one CPU cluster and can operate in lockstep mode?