topic Re: LPC177X JTAG Connection Problem - Confusion on pull-ups, pull-downs on JTAG pins in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/LPC177X-JTAG-Connection-Problem-Confusion-on-pull-ups-pull-downs/m-p/520279#M3561 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by MikeSimmonds on Tue Dec 02 03:13:42 MST 2014</STRONG><BR /><SPAN>This was asked recently (and answered). You didn't look very hard did you.</SPAN><BR /><BR /><SPAN>See </SPAN><A href="http://http://www.lpcware.com/content/forum/lpc1778-swd-swclk-pull-or-pull-down">here</A><SPAN>.</SPAN><BR /><BR /><SPAN>Regards, Mike</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:43:27 GMT lpcware 2016-06-15T17:43:27Z LPC177X JTAG Connection Problem - Confusion on pull-ups, pull-downs on JTAG pins https://community.nxp.com/t5/LPC-Microcontrollers/LPC177X-JTAG-Connection-Problem-Confusion-on-pull-ups-pull-downs/m-p/520278#M3560 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by cem.ayyildiz on Tue Dec 02 02:56:14 MST 2014</STRONG><BR /><SPAN>I think, there is a confusion on pull-up, pull down resistors connected to JTAG interface of LPC177X.</SPAN><BR /><SPAN><SPAN>In </SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.lpcware.com%2Fcontent%2Ffaq%2Flpcxpresso%2Fdebug-design" rel="nofollow" target="_blank">http://www.lpcware.com/content/faq/lpcxpresso/debug-design</A><SPAN> states that TCK pin should be connected to pull-down. In UM10470, it is connected to pull-up resistor.</SPAN></SPAN><BR /><SPAN>Which one is correct?</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:43:27 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC177X-JTAG-Connection-Problem-Confusion-on-pull-ups-pull-downs/m-p/520278#M3560 lpcware 2016-06-15T17:43:27Z Re: LPC177X JTAG Connection Problem - Confusion on pull-ups, pull-downs on JTAG pins https://community.nxp.com/t5/LPC-Microcontrollers/LPC177X-JTAG-Connection-Problem-Confusion-on-pull-ups-pull-downs/m-p/520279#M3561 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by MikeSimmonds on Tue Dec 02 03:13:42 MST 2014</STRONG><BR /><SPAN>This was asked recently (and answered). You didn't look very hard did you.</SPAN><BR /><BR /><SPAN>See </SPAN><A href="http://http://www.lpcware.com/content/forum/lpc1778-swd-swclk-pull-or-pull-down">here</A><SPAN>.</SPAN><BR /><BR /><SPAN>Regards, Mike</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:43:27 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC177X-JTAG-Connection-Problem-Confusion-on-pull-ups-pull-downs/m-p/520279#M3561 lpcware 2016-06-15T17:43:27Z