Content originally posted in LPCWare by g_turing on Tue May 13 10:21:44 MST 2014
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! [img=1861x1237]http://v2.freep.cn/3tb_140514011334jswo512293.jpg[/img]
Content originally posted in LPCWare by embd02161991 on Wed May 14 16:00:13 MST 2014 Hi ,
The boot mode is determined by the states of the boot pins P2_9, P2_8, P1_2, and P1_1. Please make sure the boot pins are in the following states to boot from USB0:
P2_9 - LOW P2_8 - HIGH P1_2 - LOW P1_1 - HIGH
Refer to the following Application note for boot pin configuration to boot from various sources.
