<?xml version="1.0" encoding="UTF-8" ?>
<?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>Terminal Count  interrupt usage.</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/32728/terminal-count-interrupt-usage</link><description> 
Hi, 

 
I am using LPC4330 based board. I am trying to do DMA to transfer
data from I2S to Memory. 

 
While trying to understand the working of the DMA, I came across
Terminal Count Interrupt. 

 
My question stems from a lack of understanding of when</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Terminal Count  interrupt usage.</title><link>https://community.arm.com/thread/82406?ContentTypeID=1</link><pubDate>Tue, 17 Feb 2015 04:48:58 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:962ef36b-f49f-4887-9f44-9dc2103c7f7d</guid><dc:creator>Milind Mishra</dc:creator><description>&lt;p&gt;&lt;p&gt;
Hi Per,&lt;/p&gt;

&lt;p&gt;
Thanks for the quick reply.&lt;/p&gt;

&lt;p&gt;
Just need a clarity on your reply.&lt;/p&gt;

&lt;p&gt;
When the DMA is being configured, the transfer size is set in the
CCONTROL register of a channel.&lt;/p&gt;

&lt;p&gt;
When the DMA is doing the flow control, is it this value which is
taken as the terminal count and is decremented?&lt;/p&gt;

&lt;p&gt;
And is the interrupt generated after this value is decremented to
zero?&lt;/p&gt;

&lt;p&gt;
Regards,&lt;br /&gt;
Milind.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Terminal Count  interrupt usage.</title><link>https://community.arm.com/thread/69082?ContentTypeID=1</link><pubDate>Tue, 17 Feb 2015 03:53:35 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:aa47580c-2a1f-4fce-8353-c9f99aec2dbe</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
Terminal count is when the DMA is doing the flow control to signal
that it has performed the specified number of transfers.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>