nRF5340 HFCLKAUDIO clock settings

RE: nRF5340 HFCLKAUDIO clock settings

dejans — Fri, 27 Sep 2024 07:11:51 GMT

Hi,

Yes, the value 39846 (0x9BA6) is even more accurate.

Best regards,
Dejan

RE: nRF5340 HFCLKAUDIO clock settings

dejans — Tue, 24 Sep 2024 14:11:12 GMT

Hi,

I have got an update on the status of reported issue. Your understanding is correct. In order to get precise output frequency of 12.2880000 MHz, HFCLKAUDIO.FREQUENCY is better to be setup as 0x00009BA5. There will be a product specification update to make the register value and frequency table more accurate.

Best regards,
Dejan

RE: nRF5340 HFCLKAUDIO clock settings

dejans — Fri, 20 Sep 2024 14:13:47 GMT

Hi,

The value of 39854 was chosen and calculated to represent 12.2883300781250 MHz but we think that the value of 39845 is better to be used for generating the center frequency closer to 12.288000 MHz. I have reported this internally.

Best regards,
Dejan

RE: nRF5340 HFCLKAUDIO clock settings

Marte Myrvold — Mon, 16 Sep 2024 11:21:54 GMT

Hi,

Dejan is out of office, and I have been assigned to your ticket.

I have forwarded your question internally.

Best regards,
Marte

RE: nRF5340 HFCLKAUDIO clock settings

dejans — Mon, 15 Jul 2024 11:16:45 GMT

Hi,

Thank you for the update.

This is rounding issue. For example, if more precise value of 12.28833 is used instead of 12.288 for calculations, the reg value should be as expected.

Best regards,
Dejan

RE: nRF5340 HFCLKAUDIO clock settings

dejans — Fri, 12 Jul 2024 09:07:57 GMT

Hi,

I am very aware that almost 2 weeks have passed already. Unfortunately, due to vacation time there is no update on this issue yet, but I have reached out to relevant people in the effort to speed up the process. I hope to be able to provide an update by the end of the next week.

Thank you for your patience.

Best regards,
Dejan

RE: nRF5340 HFCLKAUDIO clock settings

dejans — Fri, 05 Jul 2024 12:17:43 GMT

Hi,

[quote user="ace.johnny"]I realize that much of Nordic is on summer break at the moment, but have you received any update on this issue?[/quote]

Yes, it is summer vacation period and delayed replies can be expected. I have not got any update yet, but I am expecting to get it during next week.

Thank you for your understanding and patience.

Best regards,
Dejan

RE: nRF5340 HFCLKAUDIO clock settings

dejans — Mon, 01 Jul 2024 14:56:57 GMT

Hi,

Thank you for reporting this issue.

I have calculated the register value for the center frequency, and I got the value 39845.888 (or 39846 after rounding). I have reported this internally and asked for clarification. I will get back to you by the end of this week.

Best regards,
Dejan