topic Re: MFRC631 in NFC https://community.nxp.com/t5/NFC/MFRC631/m-p/642430#M1558 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>&nbsp; I couldn't confirm how you knew 1 byte had been lost, if you found data recieved lost 1 byte, Possible reason is that signal of <SPAN>the receiving end</SPAN> is weaker than noraml , So SNR is smaller, you can refter to antenna document to debug it. see the link:</P><P><A class="link-titled" href="http://www.nxp.com/products/identification-and-security/nfc-and-reader-ics/nfc-frontend-solutions/high-performance-multi-protocol-nfc-frontend:CLRC66302HN?fpsp=1&amp;tab=Documentation_Tab" title="http://www.nxp.com/products/identification-and-security/nfc-and-reader-ics/nfc-frontend-solutions/high-performance-multi-protocol-nfc-frontend:CLRC66302HN?fpsp=1&amp;tab=Documentation_Tab">High-performance multi-protocol NFC frontend|NXP</A>&nbsp;</P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 10.0pt;">&nbsp;</SPAN></P><TABLE style="border: none;"><TBODY><TR><TD style="border: solid windowtext 1.0pt; background: white; padding: 0in 2.25pt 0in 2.25pt;" width="492"><P style="margin-bottom: .0001pt; text-indent: -.25in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;"><A href="http://www.nxp.com/documents/application_note/AN11019.pdf?fasp=1&amp;WT_TYPE=Application%20Notes&amp;WT_VENDOR=FREESCALE&amp;WT_FILE_FORMAT=pdf&amp;WT_ASSET=Documentation&amp;fileExt=.pdf"><SPAN style="font-size: 10.5pt; color: #5e89c1;">CLRC663, MFRC630, MFRC631, SLRC610 Antenna Design Guide</SPAN></A>&nbsp;<STRONG>(REV 1.3)</STRONG></SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">&nbsp;PDF&nbsp;&nbsp;</SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">(2.2 MB)&nbsp;&nbsp;</SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">AN11019&nbsp;&nbsp;</SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">[English]</SPAN></P></TD><TD style="border: solid windowtext 1.0pt; border-left: none; background: white; padding: 0in 2.25pt 0in 2.25pt;" width="75"><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 9.0pt; color: #333333;">12 May 2016</SPAN></P></TD></TR></TBODY></TABLE><P style="margin: 2.0pt 0in 2.0pt 0in;"><SPAN style="font-size: 10.0pt; color: black;">&nbsp;</SPAN></P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 10.0pt;">&nbsp;</SPAN></P><P>Best Regards,</P><P>Weidong</P></BODY></HTML> Thu, 13 Oct 2016 02:45:00 GMT weidong_sun 2016-10-13T02:45:00Z MFRC631 https://community.nxp.com/t5/NFC/MFRC631/m-p/642429#M1557 <HTML><HEAD></HEAD><BODY><P>Send the packet will be lost 1 byte</P></BODY></HTML> Fri, 23 Sep 2016 02:42:46 GMT https://community.nxp.com/t5/NFC/MFRC631/m-p/642429#M1557 colinzou 2016-09-23T02:42:46Z Re: MFRC631 https://community.nxp.com/t5/NFC/MFRC631/m-p/642430#M1558 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>&nbsp; I couldn't confirm how you knew 1 byte had been lost, if you found data recieved lost 1 byte, Possible reason is that signal of <SPAN>the receiving end</SPAN> is weaker than noraml , So SNR is smaller, you can refter to antenna document to debug it. see the link:</P><P><A class="link-titled" href="http://www.nxp.com/products/identification-and-security/nfc-and-reader-ics/nfc-frontend-solutions/high-performance-multi-protocol-nfc-frontend:CLRC66302HN?fpsp=1&amp;tab=Documentation_Tab" title="http://www.nxp.com/products/identification-and-security/nfc-and-reader-ics/nfc-frontend-solutions/high-performance-multi-protocol-nfc-frontend:CLRC66302HN?fpsp=1&amp;tab=Documentation_Tab">High-performance multi-protocol NFC frontend|NXP</A>&nbsp;</P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 10.0pt;">&nbsp;</SPAN></P><TABLE style="border: none;"><TBODY><TR><TD style="border: solid windowtext 1.0pt; background: white; padding: 0in 2.25pt 0in 2.25pt;" width="492"><P style="margin-bottom: .0001pt; text-indent: -.25in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;"><A href="http://www.nxp.com/documents/application_note/AN11019.pdf?fasp=1&amp;WT_TYPE=Application%20Notes&amp;WT_VENDOR=FREESCALE&amp;WT_FILE_FORMAT=pdf&amp;WT_ASSET=Documentation&amp;fileExt=.pdf"><SPAN style="font-size: 10.5pt; color: #5e89c1;">CLRC663, MFRC630, MFRC631, SLRC610 Antenna Design Guide</SPAN></A>&nbsp;<STRONG>(REV 1.3)</STRONG></SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">&nbsp;PDF&nbsp;&nbsp;</SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">(2.2 MB)&nbsp;&nbsp;</SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">AN11019&nbsp;&nbsp;</SPAN></P><P style="text-indent: -.25in; margin: 5.0pt 0in 5.0pt 0in;"><SPAN style="font-size: 10.0pt; color: #333333;">·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN><SPAN style="font-size: 9.0pt; color: #333333;">[English]</SPAN></P></TD><TD style="border: solid windowtext 1.0pt; border-left: none; background: white; padding: 0in 2.25pt 0in 2.25pt;" width="75"><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 9.0pt; color: #333333;">12 May 2016</SPAN></P></TD></TR></TBODY></TABLE><P style="margin: 2.0pt 0in 2.0pt 0in;"><SPAN style="font-size: 10.0pt; color: black;">&nbsp;</SPAN></P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 10.0pt;">&nbsp;</SPAN></P><P>Best Regards,</P><P>Weidong</P></BODY></HTML> Thu, 13 Oct 2016 02:45:00 GMT https://community.nxp.com/t5/NFC/MFRC631/m-p/642430#M1558 weidong_sun 2016-10-13T02:45:00Z