RE: nRF54L15 Errata 39 question

Kazi Afroza Sultana — Thu, 20 Mar 2025 06:08:34 GMT

Hello,

If the START task and the STOP task are triggered at the same time, meaning within the same period of PCLK, the STOP task is prioritized.

I think we should use separate DPPI channels for PLLSTART and XOSTART and have to ensure PLLSTART has triggered first followed by XOSTART.

''If the first option is not ok but only the second option, how many microseconds (or nanoseconds) earlier? Would one single 16 MHz cycle be enough? And same question about XOSTOP and PLLSTOP. The number of DPPI channels in the low power domain is extremely limited (4) so it would be nice if XOSTART and PLLSTART could share the same channel.''

I have asked team about this timing requirements and 16MHz cycle you mentioned. I will come back to you shortly.

Thanks.

BR
Kazi