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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/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/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>NRF52 default TX\RX rampup time</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/24408/nrf52-default-tx-rx-rampup-time</link><description>Hi,
I see that the nominal deafult rampup time is 140 us in NRF52.
However, I&amp;#39;m measuring it with logic (via GPIO+PPI) and I get 129.4 us.
Why there is such a difference? 
 Thanks.</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Mon, 21 Aug 2017 09:10:27 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/24408/nrf52-default-tx-rx-rampup-time" /><item><title>RE: NRF52 default TX\RX rampup time</title><link>https://devzone.nordicsemi.com/thread/96139?ContentTypeID=1</link><pubDate>Mon, 21 Aug 2017 09:10:27 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:7d2f0aeb-6f42-4d2a-ad0e-6a228aff8195</guid><dc:creator>Joakim Jakobsen</dc:creator><description>&lt;p&gt;Hi Hagay!&lt;/p&gt;
&lt;p&gt;I&amp;#39;ve been looking into your problem, but I&amp;#39;m afraid I don&amp;#39;t have a specific answer to solve your question.&lt;br /&gt;
You can take a look at Torbjørn&amp;#39;s answer in &lt;a href="https://devzone.nordicsemi.com/question/161265/nrf52832-ramp-up-time/"&gt;this post:&lt;/a&gt;&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;We haven&amp;#39;t characterized the max/min
values for these timings
unfortunately, so we don&amp;#39;t really
know.&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;That&amp;#39;s the best answer I can give you at the time. The 140us value in the specification is just the  typical value, but I will update my answer if we get any updates on the min/max values.&lt;/p&gt;
&lt;p&gt;Best regards,&lt;br /&gt;
Joakim.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52 default TX\RX rampup time</title><link>https://devzone.nordicsemi.com/thread/96137?ContentTypeID=1</link><pubDate>Sun, 20 Aug 2017 09:52:38 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:1660b8dd-1f56-4006-ae7e-90c2b56e978d</guid><dc:creator>Hagay H.</dc:creator><description>&lt;p&gt;No, I&amp;#39;m not using ESB.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52 default TX\RX rampup time</title><link>https://devzone.nordicsemi.com/thread/96138?ContentTypeID=1</link><pubDate>Thu, 17 Aug 2017 13:37:20 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:38b73362-1b8e-4b57-9942-20c4eff3a901</guid><dc:creator>Joakim Jakobsen</dc:creator><description>&lt;p&gt;Hi hagay h. Are you using ESB? If you are, I would recommend that you take a look at &lt;a href="https://devzone.nordicsemi.com/question/107970/keeping-radio-in-idle-in-between-transmissions-esb-mode/"&gt;this question&lt;/a&gt; and specifically the answer from Torbjørn.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>