LPC MicrocontrollersのトピックISP via Infrared UART https://community.nxp.com/t5/LPC-Microcontrollers/ISP-via-Infrared-UART/m-p/541990#M12394 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by brownm on Tue Jun 10 01:29:41 MST 2014</STRONG><BR /><SPAN>Hi all </SPAN><BR /><BR /><SPAN>We are implementing ISP via an Infrared UART using a Vishay IRDA TFBS4711 Infrared transceiver </SPAN><BR /><BR /><SPAN>Datasheet here. </SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.mouser.com%2Fds%2F2%2F427%2Ftfbs4711-98544.pdf" rel="nofollow" target="_blank">http://www.mouser.com/ds/2/427/tfbs4711-98544.pdf</A></SPAN><BR /><BR /><BR /><SPAN>The datasheet states on page 7 </SPAN><BR /><BR /><SPAN>TFBS4711 echoes the TXD signal at the RXD output during</SPAN><BR /><SPAN>transmission. For communication this signal is to be correctly</SPAN><BR /><SPAN>ignored by the controller or the software. </SPAN><BR /><BR /><SPAN>Is this a problem for the 11U68 or 11E68 (or any other LPC for that matter) while the device is in ISP boot mode? The user manual documentation doesn't mention anything about it being a problem. </SPAN><BR /><BR /><SPAN>It's not a problem when the 11U68 is running as we can disable the RX interrupts when we are transmitting. </SPAN><BR /><BR /><SPAN>Regards</SPAN><BR /><BR /><SPAN>Marshall Brown</SPAN><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 19:41:52 GMT lpcware 2016-06-15T19:41:52Z ISP via Infrared UART https://community.nxp.com/t5/LPC-Microcontrollers/ISP-via-Infrared-UART/m-p/541990#M12394 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by brownm on Tue Jun 10 01:29:41 MST 2014</STRONG><BR /><SPAN>Hi all </SPAN><BR /><BR /><SPAN>We are implementing ISP via an Infrared UART using a Vishay IRDA TFBS4711 Infrared transceiver </SPAN><BR /><BR /><SPAN>Datasheet here. </SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.mouser.com%2Fds%2F2%2F427%2Ftfbs4711-98544.pdf" rel="nofollow" target="_blank">http://www.mouser.com/ds/2/427/tfbs4711-98544.pdf</A></SPAN><BR /><BR /><BR /><SPAN>The datasheet states on page 7 </SPAN><BR /><BR /><SPAN>TFBS4711 echoes the TXD signal at the RXD output during</SPAN><BR /><SPAN>transmission. For communication this signal is to be correctly</SPAN><BR /><SPAN>ignored by the controller or the software. </SPAN><BR /><BR /><SPAN>Is this a problem for the 11U68 or 11E68 (or any other LPC for that matter) while the device is in ISP boot mode? The user manual documentation doesn't mention anything about it being a problem. </SPAN><BR /><BR /><SPAN>It's not a problem when the 11U68 is running as we can disable the RX interrupts when we are transmitting. </SPAN><BR /><BR /><SPAN>Regards</SPAN><BR /><BR /><SPAN>Marshall Brown</SPAN><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 19:41:52 GMT https://community.nxp.com/t5/LPC-Microcontrollers/ISP-via-Infrared-UART/m-p/541990#M12394 lpcware 2016-06-15T19:41:52Z