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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>LPC2368 device not recognise by JTAG, PLL value to big</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/24702/lpc2368-device-not-recognise-by-jtag-pll-value-to-big</link><description> 
Hi, 

 
Does any one know how to reprogram device (LPC2368) that
previously has been programmed with PLL multiplier = 20 and crystal
freq 12MHz. 

 
I am using JTAG Keil-Ulink2, and Realview MDK-ARM Version:
3.20. 

 
The background: 
I develop board</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: LPC2368 device not recognise by JTAG, PLL value to big</title><link>https://community.arm.com/thread/77106?ContentTypeID=1</link><pubDate>Sun, 25 Jan 2009 16:52:55 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:49405b81-6273-4b9d-932e-25b8ff2f4cfd</guid><dc:creator>Rudy Moniaga</dc:creator><description>&lt;p&gt;&lt;p&gt;
hi Per Westermark,&lt;/p&gt;

&lt;p&gt;
thank you very much. It works.&lt;/p&gt;

&lt;p&gt;
I did, connect pin 53 (EINT0) to ground and program the chip using
ULINK2.&lt;/p&gt;

&lt;p&gt;
best regards,&lt;br /&gt;
Rudy&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: LPC2368 device not recognise by JTAG, PLL value to big</title><link>https://community.arm.com/thread/55260?ContentTypeID=1</link><pubDate>Sat, 24 Jan 2009 01:13:02 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:807b640e-f8e1-4370-a3cc-36ff137bd2d8</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
Switch to the monitor available on com0 and use FlashMagic to
erase the chip. This monitor is using the built-in RC oscillator, so
it isn&amp;#39;t affected by the PLL configuration. You activate the monitor
by keeping the /EINT0 signal low when the chip leaves reset.&lt;/p&gt;

&lt;p&gt;
Possibly, you may also be able to use the JTAG interface by
keeping the /EINT0 signal low when trying the JTAG communication.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>