i.MX ProcessorsのトピックRe: 0ohm registor at DRAM_SDCLK https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177153#M6866 <HTML><HEAD></HEAD><BODY><P>Hi...</P><P></P><P>Totally agree with Yuri, those are access points and&nbsp;possibly&nbsp;resistor to compensate the signals due the pcb fabrication,so, &nbsp;I do not recommend to remove them.</P></BODY></HTML> Wed, 25 Jul 2012 13:05:24 GMT NicolasIzquierd 2012-07-25T13:05:24Z 0ohm registor at DRAM_SDCLK https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177151#M6864 <HTML><HEAD></HEAD><BODY><P><SPAN>Hi</SPAN></P><P><SPAN>&nbsp;</SPAN></P><P><SPAN>We design our custom board based on MCIMX53-START-R &amp;&nbsp;MCIMX53SMD.&nbsp;DRAM_SDCLK has&nbsp;<SPAN>a series&nbsp;<SPAN>&nbsp;terminator (0ohm).&nbsp;What meaning does this have?&nbsp; If not necessary,&nbsp;I want to remove the resistor for space of the board.</SPAN></SPAN></SPAN></P><P></P><P>regurds,</P><P></P><P><SPAN><SPAN><SPAN><span class="lia-inline-image-display-wrapper" image-alt="53-ddr.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/118852i50106C5BDC878950/image-size/large?v=v2&amp;px=999" role="button" title="53-ddr.jpg" alt="53-ddr.jpg" /></span></SPAN></SPAN></SPAN></P></BODY></HTML> Wed, 25 Jul 2012 02:13:26 GMT https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177151#M6864 T_I 2012-07-25T02:13:26Z Re: 0ohm registor at DRAM_SDCLK https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177152#M6865 <HTML><HEAD></HEAD><BODY><P>First - the resistors may serve as test points for probe to analyze waveforms.<BR />Next - if real (SDCLK) signal on the board appears to be not very "good" - it will be possible<BR />to improve situation by locating more suitable termination resistors.<BR />So, it may be recommended to use them at least for prototype design.&nbsp;</P></BODY></HTML> Wed, 25 Jul 2012 02:49:32 GMT https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177152#M6865 Yuri 2012-07-25T02:49:32Z Re: 0ohm registor at DRAM_SDCLK https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177153#M6866 <HTML><HEAD></HEAD><BODY><P>Hi...</P><P></P><P>Totally agree with Yuri, those are access points and&nbsp;possibly&nbsp;resistor to compensate the signals due the pcb fabrication,so, &nbsp;I do not recommend to remove them.</P></BODY></HTML> Wed, 25 Jul 2012 13:05:24 GMT https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177153#M6866 NicolasIzquierd 2012-07-25T13:05:24Z Re: 0ohm registor at DRAM_SDCLK https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177154#M6867 <HTML><HEAD></HEAD><BODY><P><SPAN>Hi</SPAN></P><P><SPAN>Thanks for the reply.</SPAN></P><P>I understand their meaning.&nbsp;</P></BODY></HTML> Fri, 27 Jul 2012 03:02:16 GMT https://community.nxp.com/t5/i-MX-Processors/0ohm-registor-at-DRAM-SDCLK/m-p/177154#M6867 T_I 2012-07-27T03:02:16Z