Where is IRCTRIM Documented?

lpcware — Wed, 15 Jun 2016 21:28:52 GMT

Content originally posted in LPCWare by MikeSimmonds on Tue Sep 18 01:34:37 MST 2012
[FONT=Tahoma][SIZE=2]The (NXP checked!)[/SIZE][/FONT][FONT=Tahoma][SIZE=2] LPC17x_178x.h[/SIZE][/FONT][FONT=Tahoma][SIZE=2] system header file has an entry for "IRCTRIM" at address 0x400F C1A4. WTF is this and where the hell is it documented. I did a search in the UM UM10470 and the datasheet. Absolutely bloody nothing!

So maybe NXP would like to comment.

Or -- more likey -- someone on the forum has relevent info.

Ciao [/SIZE][/FONT]

Re: Where is IRCTRIM Documented?

lpcware — Wed, 15 Jun 2016 21:28:53 GMT

Content originally posted in LPCWare by cfb on Wed Sep 19 06:04:08 MST 2012
[FONT=Arial][SIZE=2][COLOR=black]IRCTRIM is mentioned in the LPC23xx (UM10211) and LPC24xx (UM10237) user manuals, but they don't say much:[/COLOR][/SIZE][/FONT]
[SIZE=2][SIZE=2][SIZE=4][SIZE=4][/SIZE][/SIZE][/SIZE][/SIZE]
[SIZE=2][SIZE=2][SIZE=4][SIZE=4][FONT=Arial][SIZE=2][COLOR=black]"This register is used to trim the on - chip 4 MHz oscillator."[/COLOR][/SIZE][/FONT]

[FONT=Arial][SIZE=2][COLOR=black]The equivalent for the LPC1xxx family is the IRCCTRL register (0x4004 8028). However, I have only seen it in the LPC111x/LPC11Cxx (UM10398) and [/COLOR][/SIZE][/FONT]
[FONT=Arial][SIZE=2][COLOR=black]LPC1311/13/42/43 (UM10375) user manuals:[/COLOR][/SIZE][/FONT]

[FONT=Arial][SIZE=2][COLOR=black]"This register is used to trim the on-chip 12 MHz oscillator. The trim value is factory-preset and written by the boot code."[/COLOR][/SIZE][/FONT][/SIZE][/SIZE][/SIZE][/SIZE][SIZE=2][SIZE=2]
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LPCXpresso IDE中的主题 Where is IRCTRIM Documented?

Where is IRCTRIM Documented?

Re: Where is IRCTRIM Documented?