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    <title>topic LPC824 Max board xtal oscillator not working in LPC Microcontrollers</title>
    <link>https://community.nxp.com/t5/LPC-Microcontrollers/LPC824-Max-board-xtal-oscillator-not-working/m-p/572405#M18573</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;STRONG&gt;Content originally posted in LPCWare by ECamino on Wed May 04 13:10:18 MST 2016&lt;/STRONG&gt;&lt;BR /&gt;&lt;SPAN&gt;Hi,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I removed 0-ohm resistors and solder-jumped SJ3 1&amp;amp;2 and SJ4 1&amp;amp;2.&amp;nbsp; &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I have continuity on Y2 to pins 17 and 18. &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Using LPCOpen project for LPC824 "periph_wwdt" &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;In file sysinit_8xx.c, line 68, comment "Chip_SetupIrcClocking();" and add line "Chip_SetupXtalClocking();"&amp;nbsp; &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Build, run debug (using LPCLink on an LPCxpresso 800 board) and I can see it hangs at sysinit_8xx.c, line 78: "while (!Chip_Clock_IsSystemPLLLocked()){}"&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I checked the Y2 signal with a scope, and there is no crystal signal from either Y2 pad.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;What do I have to do to enable the crystal clock on an LPC824 Max board?&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Thanks,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;EC&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Wed, 15 Jun 2016 20:11:47 GMT</pubDate>
    <dc:creator>lpcware</dc:creator>
    <dc:date>2016-06-15T20:11:47Z</dc:date>
    <item>
      <title>LPC824 Max board xtal oscillator not working</title>
      <link>https://community.nxp.com/t5/LPC-Microcontrollers/LPC824-Max-board-xtal-oscillator-not-working/m-p/572405#M18573</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;STRONG&gt;Content originally posted in LPCWare by ECamino on Wed May 04 13:10:18 MST 2016&lt;/STRONG&gt;&lt;BR /&gt;&lt;SPAN&gt;Hi,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I removed 0-ohm resistors and solder-jumped SJ3 1&amp;amp;2 and SJ4 1&amp;amp;2.&amp;nbsp; &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I have continuity on Y2 to pins 17 and 18. &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Using LPCOpen project for LPC824 "periph_wwdt" &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;In file sysinit_8xx.c, line 68, comment "Chip_SetupIrcClocking();" and add line "Chip_SetupXtalClocking();"&amp;nbsp; &lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Build, run debug (using LPCLink on an LPCxpresso 800 board) and I can see it hangs at sysinit_8xx.c, line 78: "while (!Chip_Clock_IsSystemPLLLocked()){}"&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I checked the Y2 signal with a scope, and there is no crystal signal from either Y2 pad.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;What do I have to do to enable the crystal clock on an LPC824 Max board?&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Thanks,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;EC&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 15 Jun 2016 20:11:47 GMT</pubDate>
      <guid>https://community.nxp.com/t5/LPC-Microcontrollers/LPC824-Max-board-xtal-oscillator-not-working/m-p/572405#M18573</guid>
      <dc:creator>lpcware</dc:creator>
      <dc:date>2016-06-15T20:11:47Z</dc:date>
    </item>
    <item>
      <title>Re: LPC824 Max board xtal oscillator not working</title>
      <link>https://community.nxp.com/t5/LPC-Microcontrollers/LPC824-Max-board-xtal-oscillator-not-working/m-p/572406#M18574</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;bump&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sun, 19 Jun 2016 01:09:59 GMT</pubDate>
      <guid>https://community.nxp.com/t5/LPC-Microcontrollers/LPC824-Max-board-xtal-oscillator-not-working/m-p/572406#M18574</guid>
      <dc:creator>lpcware</dc:creator>
      <dc:date>2016-06-19T01:09:59Z</dc:date>
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