lpcware

Pll not locked

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by boris on Tue Jul 17 05:53:00 MST 2012
Hi All .

I have problem with PLL.

my code:
[SIZE=2][COLOR=#3f7f5f]*/[/COLOR][/SIZE]
[SIZE=2][COLOR=#3f7f5f] [/COLOR][/SIZE]Input Freaq = 12 MHz, System will - 24MHz
[LEFT][SIZE=2][COLOR=#3f7f5f][SIZE=2][COLOR=#3f7f5f]*/[/COLOR][/SIZE][/COLOR][/SIZE][/LEFT]

[SIZE=2]LPC_SYSCON->
[/SIZE][LEFT][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]SYSPLLCTRL[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] = 0b01000001;[/SIZE][SIZE=2][COLOR=#3f7f5f][SIZE=2][COLOR=#3f7f5f]// 24MHZ [/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2][COLOR=#3f7f5f]
[LEFT][/COLOR][/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]while[/COLOR][/SIZE][/COLOR][/SIZE][/B][SIZE=2] (!(LPC_SYSCON->[/SIZE][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]SYSPLLSTAT[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] & 0x01)); [/SIZE][SIZE=2][COLOR=#3f7f5f][SIZE=2][COLOR=#3f7f5f]//Wait Until PLL Locked[/COLOR][/SIZE][/COLOR][/SIZE][/LEFT]

[LEFT][SIZE=2][COLOR=#3f7f5f][SIZE=2][COLOR=#3f7f5f]But PLL not LOCKED .:confused:[/COLOR][/SIZE][/COLOR][/SIZE][/LEFT]

[LEFT]Maybe someone knows, when could be the problem ?[/LEFT]

[LEFT]Thanks.[/LEFT]


[/LEFT]

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