S32KのトピックRe: S32K Crystal Drive, Gain Control https://community.nxp.com/t5/S32K/S32K-Crystal-Drive-Gain-Control/m-p/913590#M4730 <HTML><HEAD></HEAD><BODY><P>Hi Patrick Langlois</P><P></P><P>Yes, there is an automatic control that will do this internally, customer has to connect the external resistors based in the crystal manufacture specifications.&nbsp; When high gain is selected, provides better noise immunity but does draw/ higher current, with low gain power consuption will be lower and customer can see a smaller signal in the pins due to the power saving.</P><P></P><P>Regards</P><P>Jorge Alcala</P></BODY></HTML> Tue, 18 Jun 2019 13:54:14 GMT jorge_a_vazquez 2019-06-18T13:54:14Z S32K Crystal Drive, Gain Control https://community.nxp.com/t5/S32K/S32K-Crystal-Drive-Gain-Control/m-p/913589#M4729 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>Looking at the datasheet, reference manual and application notes for the S32K microcontrollers, I can't understand if there is a minimum automatic gain control additionally to the programmable one (HI/LO gain) for an external crystal drive (SOSC).</P><P></P><P><EM> To be as clear as possible...</EM></P><P>For each range of crystal frequencies "covered" by each of both manual gain settings, is there some automatic control that will increase the crystal drive to provide a proper level of response on the inverter input?</P><P></P><P>Regards.</P></BODY></HTML> Wed, 12 Jun 2019 12:18:55 GMT https://community.nxp.com/t5/S32K/S32K-Crystal-Drive-Gain-Control/m-p/913589#M4729 patricklanglois 2019-06-12T12:18:55Z Re: S32K Crystal Drive, Gain Control https://community.nxp.com/t5/S32K/S32K-Crystal-Drive-Gain-Control/m-p/913590#M4730 <HTML><HEAD></HEAD><BODY><P>Hi Patrick Langlois</P><P></P><P>Yes, there is an automatic control that will do this internally, customer has to connect the external resistors based in the crystal manufacture specifications.&nbsp; When high gain is selected, provides better noise immunity but does draw/ higher current, with low gain power consuption will be lower and customer can see a smaller signal in the pins due to the power saving.</P><P></P><P>Regards</P><P>Jorge Alcala</P></BODY></HTML> Tue, 18 Jun 2019 13:54:14 GMT https://community.nxp.com/t5/S32K/S32K-Crystal-Drive-Gain-Control/m-p/913590#M4730 jorge_a_vazquez 2019-06-18T13:54:14Z