https://community.nxp.com/t5/i-MX-Processors/XTALOSC-SYS-OSCNML-CTL0-frequency-selection/m-p/2325789#M244267 <P>According to the <STRONG>i.MX8M Min</STRONG>i Reference Manual, the <STRONG>XTALOSC_SYS_OSCNML_CTL0</STRONG> register allows selecting Frequency0 or Frequency1 (SF0/SF1 fields), but the manual does not provide further explanation of what these frequencies represent. Could you please indicate which documents provide more details about these settings?</P><P>During RF testing, we observed a 600 MHz emission peak, which appeared strongest near the 24 MHz oscillator. We suspect this may be caused by a resonance on the PCB traces and would like to investigate it further using software-based configuration options.</P> Tue, 03 Mar 2026 23:02:34 GMT alexandersamuti 2026-03-03T23:02:34Z https://community.nxp.com/t5/i-MX-Processors/XTALOSC-SYS-OSCNML-CTL0-frequency-selection/m-p/2325789#M244267 <P>According to the <STRONG>i.MX8M Min</STRONG>i Reference Manual, the <STRONG>XTALOSC_SYS_OSCNML_CTL0</STRONG> register allows selecting Frequency0 or Frequency1 (SF0/SF1 fields), but the manual does not provide further explanation of what these frequencies represent. Could you please indicate which documents provide more details about these settings?</P><P>During RF testing, we observed a 600 MHz emission peak, which appeared strongest near the 24 MHz oscillator. We suspect this may be caused by a resonance on the PCB traces and would like to investigate it further using software-based configuration options.</P> Tue, 03 Mar 2026 23:02:34 GMT https://community.nxp.com/t5/i-MX-Processors/XTALOSC-SYS-OSCNML-CTL0-frequency-selection/m-p/2325789#M244267 alexandersamuti 2026-03-03T23:02:34Z https://community.nxp.com/t5/i-MX-Processors/XTALOSC-SYS-OSCNML-CTL0-frequency-selection/m-p/2325879#M244271 <P>how about your design? do you use external clock?</P> Wed, 04 Mar 2026 02:27:34 GMT https://community.nxp.com/t5/i-MX-Processors/XTALOSC-SYS-OSCNML-CTL0-frequency-selection/m-p/2325879#M244271 joanxie 2026-03-04T02:27:34Z https://community.nxp.com/t5/i-MX-Processors/XTALOSC-SYS-OSCNML-CTL0-frequency-selection/m-p/2326556#M244309 <DIV class="">&nbsp;</DIV><DIV class="">&nbsp;</DIV><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="image (2).png" style="width: 269px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/378343iD0E6A5692212F07E/image-size/large?v=v2&amp;px=999" role="button" title="image (2).png" alt="image (2).png" /></span></P> Wed, 04 Mar 2026 18:53:53 GMT https://community.nxp.com/t5/i-MX-Processors/XTALOSC-SYS-OSCNML-CTL0-frequency-selection/m-p/2326556#M244309 alexandersamuti 2026-03-04T18:53:53Z