i.MX Processors中的主题 VDDHIGH Voltage Range https://community.nxp.com/t5/i-MX-Processors/VDDHIGH-Voltage-Range/m-p/456423#M71232 <HTML><HEAD></HEAD><BODY><P>I am using a I.MX 6 SoloX processor with a MMPF0200 PMIC. I would like to use the pre-programmed Device F0. My problem is now, that there is no default voltage which fits the requirements for the VDD_HIGH voltage Domain.</P><UL><LI>SW1 is used for Core Voltage</LI><LI>SW2 should be used for 3.3V Peripheral Interfaces of the i.MX</LI><LI>SW3 is used for DDR</LI><LI>VGEN1 delivers 1.5V (not in use)</LI><LI>VGEN2 delivers 1.5V (not in use)</LI><LI>VGEN3 delivers 2.5V and sould bes used for Ethernet logic interface</LI><LI>VGEN4 delivers 1.8V and sould bes used for low-power Mode for eMMC interface</LI><LI>VGEN5 delivers 2.8V (not in use)</LI><LI>VGEN6 delivers 3.3V <EM>VDD_HIGH?</EM></LI></UL><P></P><P>Now, I am able to use VGEN1,2,5 or 6. The problem is now, that the VDD_HIGH-Domain powers the clock generation. So, the voltage has to be correct at startup an cannot be overwritten in Software. VGEN1&amp;2 can't be used because the voltage would be too low. VGEN5&amp;6 are right on the limits of the recommended power levels. So, if the level would wobble a bit (which they always will) it is possbile that both voltages violate the Voltage contraints. VGEN5 cant be used because the maximum current is a bit too low (100mA when max. 125mA needed, chapter 4.1.5)</P><P>But: In the IM.X 6 SoloX Industrial Application Datasheet Chapter 4.1.6 all test cases use 3.3V to Power VDD_HIGH.</P><P>So my question is: Is it guaranteed that the Processor will start up if I apply VGEN6 with 3.3V to this Input even if it may be a bit higher?</P></BODY></HTML> Thu, 17 Sep 2015 06:33:16 GMT DBMicro 2015-09-17T06:33:16Z VDDHIGH Voltage Range https://community.nxp.com/t5/i-MX-Processors/VDDHIGH-Voltage-Range/m-p/456423#M71232 <HTML><HEAD></HEAD><BODY><P>I am using a I.MX 6 SoloX processor with a MMPF0200 PMIC. I would like to use the pre-programmed Device F0. My problem is now, that there is no default voltage which fits the requirements for the VDD_HIGH voltage Domain.</P><UL><LI>SW1 is used for Core Voltage</LI><LI>SW2 should be used for 3.3V Peripheral Interfaces of the i.MX</LI><LI>SW3 is used for DDR</LI><LI>VGEN1 delivers 1.5V (not in use)</LI><LI>VGEN2 delivers 1.5V (not in use)</LI><LI>VGEN3 delivers 2.5V and sould bes used for Ethernet logic interface</LI><LI>VGEN4 delivers 1.8V and sould bes used for low-power Mode for eMMC interface</LI><LI>VGEN5 delivers 2.8V (not in use)</LI><LI>VGEN6 delivers 3.3V <EM>VDD_HIGH?</EM></LI></UL><P></P><P>Now, I am able to use VGEN1,2,5 or 6. The problem is now, that the VDD_HIGH-Domain powers the clock generation. So, the voltage has to be correct at startup an cannot be overwritten in Software. VGEN1&amp;2 can't be used because the voltage would be too low. VGEN5&amp;6 are right on the limits of the recommended power levels. So, if the level would wobble a bit (which they always will) it is possbile that both voltages violate the Voltage contraints. VGEN5 cant be used because the maximum current is a bit too low (100mA when max. 125mA needed, chapter 4.1.5)</P><P>But: In the IM.X 6 SoloX Industrial Application Datasheet Chapter 4.1.6 all test cases use 3.3V to Power VDD_HIGH.</P><P>So my question is: Is it guaranteed that the Processor will start up if I apply VGEN6 with 3.3V to this Input even if it may be a bit higher?</P></BODY></HTML> Thu, 17 Sep 2015 06:33:16 GMT https://community.nxp.com/t5/i-MX-Processors/VDDHIGH-Voltage-Range/m-p/456423#M71232 DBMicro 2015-09-17T06:33:16Z Re: VDDHIGH Voltage Range https://community.nxp.com/t5/i-MX-Processors/VDDHIGH-Voltage-Range/m-p/456424#M71233 <HTML><HEAD></HEAD><BODY><P>Hi DBMicro</P><P></P><P>yes it will start up, however for longterm reliability it is not recommended to</P><P>use higher voltages than recommended by datsheet.</P><P></P><P>Best regards</P><P>igor</P><P>-----------------------------------------------------------------------------------------------------------------------</P><P>Note: If this post answers your question, please click the Correct Answer button. Thank you!</P><P>-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Thu, 17 Sep 2015 08:17:29 GMT https://community.nxp.com/t5/i-MX-Processors/VDDHIGH-Voltage-Range/m-p/456424#M71233 igorpadykov 2015-09-17T08:17:29Z