LPC MicrocontrollersのトピックHaving Problem working on SPI... https://community.nxp.com/t5/LPC-Microcontrollers/Having-Problem-working-on-SPI/m-p/845029#M33616 <HTML><HEAD></HEAD><BODY><P>I am working on LPC1768, Interfaced with CS5463.</P><P>Getting Clock and MOSI pulses of 3.3V even making it open drain, As of my knowledge CS5463 needs Pulses having 4.8V for High Logic, Alias I am getting to 3.3V only That is why my SPI is malfunctioning, Readings are not stable and even not precised..</P><P></P><P>So how can i get upto 5V pulses from SPI pins.</P><P></P><P>Regards Nisarg.</P></BODY></HTML> Fri, 07 Dec 2018 06:26:19 GMT nisargnyk 2018-12-07T06:26:19Z Having Problem working on SPI... https://community.nxp.com/t5/LPC-Microcontrollers/Having-Problem-working-on-SPI/m-p/845029#M33616 <HTML><HEAD></HEAD><BODY><P>I am working on LPC1768, Interfaced with CS5463.</P><P>Getting Clock and MOSI pulses of 3.3V even making it open drain, As of my knowledge CS5463 needs Pulses having 4.8V for High Logic, Alias I am getting to 3.3V only That is why my SPI is malfunctioning, Readings are not stable and even not precised..</P><P></P><P>So how can i get upto 5V pulses from SPI pins.</P><P></P><P>Regards Nisarg.</P></BODY></HTML> Fri, 07 Dec 2018 06:26:19 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Having-Problem-working-on-SPI/m-p/845029#M33616 nisargnyk 2018-12-07T06:26:19Z Re: Having Problem working on SPI... https://community.nxp.com/t5/LPC-Microcontrollers/Having-Problem-working-on-SPI/m-p/845030#M33617 <HTML><HEAD></HEAD><BODY><P>Hi, Nisarg,</P><P>I copy part of the data sheet of CS5463, from the description, the VA+ is 5V, but the VD+ can be from 3.3V to 5V, I suggest you connect 3.3V power supply to VD+ pin, in this way, all digital logic will be 3.3V, it is easy for the the LPC1768 to interface with.</P><P>If you do want to connect VD+ to 5V power supply, I suppose that a transceiver chip is required, one side is 5V, another side is 3.3V.</P><P>Hope it can help you</P><P>BR</P><P>XiangJun Rong</P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/63648iFAA3138E2870CE59/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P></BODY></HTML> Mon, 10 Dec 2018 03:13:55 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Having-Problem-working-on-SPI/m-p/845030#M33617 xiangjun_rong 2018-12-10T03:13:55Z