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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>AMBA APB Why can&amp;#39;t we have 64 bits wide?</title><link>https://community.arm.com/developer/tools-software/tools/f/arm-compilers-forum/48002/amba-apb-why-can-t-we-have-64-bits-wide</link><description> Hi, I am using AMBA APB for my project. I need the width of data bus to be 64 bits , can I increase from 32 bits to 64 bits? 
 Why there is a constraint on data bus to be of size 32? </description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: AMBA APB Why can't we have 64 bits wide?</title><link>https://community.arm.com/thread/168786?ContentTypeID=1</link><pubDate>Tue, 24 Nov 2020 12:15:02 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:86f19a7c-71ac-4804-ab97-175c90e37920</guid><dc:creator>tv-pavan</dc:creator><description>&lt;p&gt;Thanks Jerome for your inputs.&lt;br /&gt;I have posted this question in soc design forum too, I am hoping I may get some more insight on this.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: AMBA APB Why can't we have 64 bits wide?</title><link>https://community.arm.com/thread/168763?ContentTypeID=1</link><pubDate>Mon, 23 Nov 2020 11:04:03 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:61ec977d-ee67-4343-8b74-c0a73a89768c</guid><dc:creator>Jerome Decamps - 杜尚杰</dc:creator><description>&lt;p&gt;not sure of this,&lt;br /&gt;I think you can not treat directly this data on the board.&lt;/p&gt;
&lt;p&gt;But maybe you can use it to transmit them.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: AMBA APB Why can't we have 64 bits wide?</title><link>https://community.arm.com/thread/168752?ContentTypeID=1</link><pubDate>Sun, 22 Nov 2020 12:15:11 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:523feac6-f021-4bba-8ea3-7c590750f5c9</guid><dc:creator>tv-pavan</dc:creator><description>&lt;p&gt;Thanks &lt;a href="/members/ackmicro" class="internal-link view-user-profile"&gt;Jerome Decamps - 杜尚杰&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;If my Peripheral requires 64 bit wide data, can I make the data bus size to 64 bit wide? will there be any constraints again?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: AMBA APB Why can't we have 64 bits wide?</title><link>https://community.arm.com/thread/168638?ContentTypeID=1</link><pubDate>Fri, 13 Nov 2020 14:15:20 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:8a8c36f2-2913-4ab8-96aa-e7f543bc2f75</guid><dc:creator>Oliver Beirne</dc:creator><description>&lt;p&gt;Super, thanks Jerome!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: AMBA APB Why can't we have 64 bits wide?</title><link>https://community.arm.com/thread/168637?ContentTypeID=1</link><pubDate>Fri, 13 Nov 2020 14:08:56 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:3dc4afd7-a553-4d6d-a152-eb98a37eb689</guid><dc:creator>Jerome Decamps - 杜尚杰</dc:creator><description>&lt;p&gt;Hi &lt;a href="/members/tv_2d00_pavan" class="internal-link view-user-profile"&gt;tv-pavan&lt;/a&gt;,&lt;br /&gt;&lt;br /&gt;Unfortunatly i this your answers is there :&amp;nbsp;&lt;a href="https://developer.arm.com/documentation/ihi0024/c/Signal-Descriptions/AMBA-APB-signals/Data-buses"&gt;https://developer.arm.com/documentation/ihi0024/c/Signal-Descriptions/AMBA-APB-signals/Data-buses&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&amp;quot;&lt;span&gt;APB supports low bandwidth transactions required to access configuration registers and low bandwidth data traffic in peripherals.&amp;quot;&lt;br /&gt;&lt;br /&gt; For me that&amp;#39;s mean you&amp;#39;re lock in 32bits with it. :( Sorry.&lt;br /&gt;&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: AMBA APB Why can't we have 64 bits wide?</title><link>https://community.arm.com/thread/168636?ContentTypeID=1</link><pubDate>Fri, 13 Nov 2020 14:06:05 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:24234a4b-92c5-4e52-9db1-ba83e93a4ad4</guid><dc:creator>Jerome Decamps - 杜尚杰</dc:creator><description>&lt;p&gt;Oliver you should move it in Arm compilers forum, i think it&amp;#39;s the good place.&lt;br /&gt;&lt;br /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: AMBA APB Why can't we have 64 bits wide?</title><link>https://community.arm.com/thread/168538?ContentTypeID=1</link><pubDate>Mon, 09 Nov 2020 13:32:40 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:0916f0e3-cbfe-4ffc-b06c-b32675a9b26f</guid><dc:creator>Oliver Beirne</dc:creator><description>&lt;p&gt;Hi &lt;a href="/members/tv_2d00_pavan" class="internal-link view-user-profile"&gt;tv-pavan&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Could you take a look at&amp;nbsp;&lt;a href="/developer/f"&gt;https://community.arm.com/developer/f&lt;/a&gt;&amp;nbsp;and tell me which forum I can move this question to please?&lt;/p&gt;
&lt;p&gt;Thanks&lt;/p&gt;
&lt;p&gt;Oli from the Community team&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>