ColdFire/68K Microcontrollers and ProcessorsのトピックMCF52223 ADC https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF52223-ADC/m-p/193124#M8484 <HTML><HEAD></HEAD><BODY><DIV><SPAN style="font-size: 5;">Hello everybody,</SPAN></DIV><DIV><SPAN style="font-size: 5;">When i use mcf52223 adc to do my work, i noticed that the "MCF52223 ColdFire® Integrated Microcontroller Reference Manual" page 25-33 tells the ADC clock is gated by ADC bit of SIM_PCE register of SIM module. But I can not find the description on SIM_PCE register. Is it an error or useless register. Does it affect the ADC operation?</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN style="font-size: 5;">Thanks millions on any hints</SPAN></DIV><DIV><SPAN style="font-size: 5;">best regards,</SPAN></DIV></BODY></HTML> Mon, 13 Oct 2008 16:36:04 GMT Archaiwy 2008-10-13T16:36:04Z MCF52223 ADC https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF52223-ADC/m-p/193124#M8484 <HTML><HEAD></HEAD><BODY><DIV><SPAN style="font-size: 5;">Hello everybody,</SPAN></DIV><DIV><SPAN style="font-size: 5;">When i use mcf52223 adc to do my work, i noticed that the "MCF52223 ColdFire® Integrated Microcontroller Reference Manual" page 25-33 tells the ADC clock is gated by ADC bit of SIM_PCE register of SIM module. But I can not find the description on SIM_PCE register. Is it an error or useless register. Does it affect the ADC operation?</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN style="font-size: 5;">Thanks millions on any hints</SPAN></DIV><DIV><SPAN style="font-size: 5;">best regards,</SPAN></DIV></BODY></HTML> Mon, 13 Oct 2008 16:36:04 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF52223-ADC/m-p/193124#M8484 Archaiwy 2008-10-13T16:36:04Z Re: MCF52223 ADC https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF52223-ADC/m-p/193125#M8485 <HTML><HEAD></HEAD><BODY><DIV></DIV><DIV>From other Freescale manuals, I believe the register being described is:</DIV><DIV><FONT face="Times New Roman" size="3"><FONT face="Times New Roman" size="3"></FONT></FONT><BLOCKQUOTE><P align="left">Finally, the SIM_PCE register contains a bit per peripheral to enable clocking to that peripheral. This is useful for power management. These controls are referenced in peripheral-related restrictions later in this document.</P></BLOCKQUOTE></DIV><DIV>Which would actually be the CDADC bit of PPMRH in the 52223 (section 6.2.1).&nbsp; The clock is enabled (i.e., not disabled) by default.</DIV><DIV>&nbsp;</DIV><DIV>This (documentation error) is also speculated here:</DIV><DIV>&nbsp;</DIV><DIV><A href="http://forums.freescale.com/freescale/board/message?board.id=CFCOMM&amp;thread.id=4246" target="_blank">http://forums.freescale.com/freescale/board/message?board.id=CFCOMM&amp;thread.id=4246</A></DIV><DIV>&nbsp;</DIV></BODY></HTML> Tue, 14 Oct 2008 05:11:51 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF52223-ADC/m-p/193125#M8485 RichTestardi 2008-10-14T05:11:51Z