topic LPC4320 can't DFU boot from USB0 ,help me in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/LPC4320-can-t-DFU-boot-from-USB0-help-me/m-p/574069#M18947 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by g_turing on Tue May 13 10:21:44 MST 2014</STRONG><BR /><BR /><BR /><SPAN>hello,i'm using lpc4320FBD144 try to boot from USB0,can't enumeration,D+ D- voltage is zero. USB0_RREF voltage is 1.2v. P1_1 voltage is vcc ,3.3v. my soild temperature is 280 centi degree. where is wrong,somebody can tell me,thanks a lot! </SPAN><BR /><SPAN><SPAN>[img=1861x1237]</SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fv2.freep.cn%2F3tb_140514011334jswo512293.jpg%5B%2Fimg%5D" rel="nofollow" target="_blank">http://v2.freep.cn/3tb_140514011334jswo512293.jpg[/img]</A></SPAN></BODY></HTML> Wed, 15 Jun 2016 18:58:24 GMT lpcware 2016-06-15T18:58:24Z LPC4320 can't DFU boot from USB0 ,help me https://community.nxp.com/t5/LPC-Microcontrollers/LPC4320-can-t-DFU-boot-from-USB0-help-me/m-p/574069#M18947 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by g_turing on Tue May 13 10:21:44 MST 2014</STRONG><BR /><BR /><BR /><SPAN>hello,i'm using lpc4320FBD144 try to boot from USB0,can't enumeration,D+ D- voltage is zero. USB0_RREF voltage is 1.2v. P1_1 voltage is vcc ,3.3v. my soild temperature is 280 centi degree. where is wrong,somebody can tell me,thanks a lot! </SPAN><BR /><SPAN><SPAN>[img=1861x1237]</SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fv2.freep.cn%2F3tb_140514011334jswo512293.jpg%5B%2Fimg%5D" rel="nofollow" target="_blank">http://v2.freep.cn/3tb_140514011334jswo512293.jpg[/img]</A></SPAN></BODY></HTML> Wed, 15 Jun 2016 18:58:24 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC4320-can-t-DFU-boot-from-USB0-help-me/m-p/574069#M18947 lpcware 2016-06-15T18:58:24Z Re: LPC4320 can't DFU boot from USB0 ,help me https://community.nxp.com/t5/LPC-Microcontrollers/LPC4320-can-t-DFU-boot-from-USB0-help-me/m-p/574070#M18948 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by embd02161991 on Wed May 14 16:00:13 MST 2014</STRONG><BR /><SPAN>Hi ,</SPAN><BR /><BR /><SPAN>The boot mode is determined by the states of the boot pins P2_9, P2_8, P1_2, and P1_1. </SPAN><BR /><SPAN>Please make sure the boot pins are in the following states to boot from USB0: </SPAN><BR /><BR /><SPAN>P2_9 - LOW</SPAN><BR /><SPAN>P2_8 - HIGH</SPAN><BR /><SPAN>P1_2 - LOW</SPAN><BR /><SPAN>P1_1 - HIGH</SPAN><BR /><BR /><SPAN>Refer to the following Application note for boot pin configuration to boot from various sources.</SPAN><BR /><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.nxp.com%2Fdocuments%2Fapplication_note%2FAN11239.pdf" rel="nofollow" target="_blank">http://www.nxp.com/documents/application_note/AN11239.pdf</A></SPAN><BR /><BR /><SPAN>Thanks,</SPAN><BR /><SPAN>NXP Technical Support </SPAN></BODY></HTML> Wed, 15 Jun 2016 18:58:25 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC4320-can-t-DFU-boot-from-USB0-help-me/m-p/574070#M18948 lpcware 2016-06-15T18:58:25Z