I.MX28 电源启动

dragon-426031 · 发表于 2013-4-10 11:51:40

请教：
我的I.MX287板子用外部5V电源启动不了；只能通过电池启动；
看电源管理手册上的HW_POWER_5VCTRL[ENABLE_DCDC] = 1 这个在哪儿设置呀；

我知道答案目前已有4人回答

FSL_TICS_Kan · 发表于 2013-4-10 14:12:43

照理说电源能启动，5V应该更没问题，你能把你的电源那块的原理图贴个图上来吗？

dragon-426031 · 发表于 2013-4-26 17:20:34

这是什么意思呀：HTLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
FLC
PowerPrep start initialize power...
Battery Voltage = 4.15V
5v source detected.Valid battery voltage detected
.Booting from battery voltage source.
LLLCJan 26 201118:15:19
FRAC 0x92925552
Wait for ddr ready 1power 0x00820616
Frac 0x92925552
start change cpu freq
hbus 0x00000003
cpu 0x00010001
start test memory accress
ddr2 0x40000000
finish simple test
LLLLLLLFLCLLJ
0x8020a014
0x8020a014
0x8020a014