i.MX ProcessorsのトピックRe: iMX536 NVCC_SRTC Abnormal https://community.nxp.com/t5/i-MX-Processors/iMX536-NVCC-SRTC-Abnormal/m-p/277368#M31184 <HTML><HEAD></HEAD><BODY><P>Check the following signals in your schematic:</P><P>CKIL, ECKIL, PMIC_ON_REQ, PMIC_STBY_REQ.</P><P>These signals also use NVCC_SRTC_POW as power source.</P><P>Probably, you had one of these signals connected to IC that uses 1.8V level,</P><P>and it got leaked to NVCC_SRTC_POW pin.</P></BODY></HTML> Fri, 18 Oct 2013 01:53:48 GMT DonnyChiu 2013-10-18T01:53:48Z iMX536 NVCC_SRTC Abnormal https://community.nxp.com/t5/i-MX-Processors/iMX536-NVCC-SRTC-Abnormal/m-p/277367#M31183 <HTML><HEAD></HEAD><BODY><P>&nbsp;&nbsp;&nbsp;&nbsp; Hello，I come here for your help！&nbsp;&nbsp;&nbsp; </P><P>&nbsp;&nbsp;&nbsp;&nbsp; <BR />&nbsp;&nbsp;&nbsp;&nbsp; It is like this： Use LTC3589-1 as a PMIC For iMX536, connet LDO1 to NVCC_SRTC_1V3. When not Powrn ON, the LDO1 out is 1.3V,after power on,LDO1 changes to 1.8V.when I Cut off the connectiong between NVCC_SRTC_1V3 and LTC3589-1's LDO1,NVCC_SRTC_1V3's voltage is 1.8V,and LDO1's voltage is 1.3V.</P><P>&nbsp;&nbsp;&nbsp;&nbsp; Is there something settings wrong?</P><P></P><P>&nbsp;&nbsp;&nbsp;&nbsp; PS: LDO power input VDD_REG is measured as 2.5V.</P></BODY></HTML> Mon, 14 Oct 2013 07:28:13 GMT https://community.nxp.com/t5/i-MX-Processors/iMX536-NVCC-SRTC-Abnormal/m-p/277367#M31183 xiaobingtang 2013-10-14T07:28:13Z Re: iMX536 NVCC_SRTC Abnormal https://community.nxp.com/t5/i-MX-Processors/iMX536-NVCC-SRTC-Abnormal/m-p/277368#M31184 <HTML><HEAD></HEAD><BODY><P>Check the following signals in your schematic:</P><P>CKIL, ECKIL, PMIC_ON_REQ, PMIC_STBY_REQ.</P><P>These signals also use NVCC_SRTC_POW as power source.</P><P>Probably, you had one of these signals connected to IC that uses 1.8V level,</P><P>and it got leaked to NVCC_SRTC_POW pin.</P></BODY></HTML> Fri, 18 Oct 2013 01:53:48 GMT https://community.nxp.com/t5/i-MX-Processors/iMX536-NVCC-SRTC-Abnormal/m-p/277368#M31184 DonnyChiu 2013-10-18T01:53:48Z