https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=Category%3ACortex_Debug 2026-06-07T01:39:17Z Revision history for this page on the wiki MediaWiki 1.37.2 https://w.electrodragon.com/w/index.php?title=Category:Cortex_Debug&diff=30378&oldid=prev 2021-03-17T17:49:43Z

<p></p> <p><b>New page</b></p><div>[[File:Ulinkpro jtag 10pin swm.gif|thumb|right]]<br /> == Jtag ==<br /> JTAG Signals<br /> Signal Connects to...<br /> * TMS Test Mode State pin — Use 100K Ohm pull-up resistor to VCC.<br /> * TDO Test Data Out pin.<br /> * TDI Test Data In pin — Use 100K Ohm pull-up resistor to VCC.<br /> * TCLK Test CLocK pin — Use 100K Ohm pull-down resistor to GND.<br /> * VCC Positive Supply Voltage — Power supply for JTAG interface drivers.<br /> * GND Digital ground.<br /> * nRESET nRESET pin — Connect this pin to the (active low) reset input of the target CPU. Use 100K Ohm pull-up resistor to VCC. This is an open-collector/open-drain output.<br /> == Serial Wire == <br /> The Serial Wire mode is a different operating mode for the JTAG port, where only two pins are used for the communication. A third pin can be used optionally to trace data. JTAG pins and SW pins are shared.<br /> * TCLK is SWCLK (Serial Wire Clock)<br /> * TMS is SWDIO (Serial Wire debug Data Input/Output)<br /> * TDO is SWO (Serial Wire trace Output)<br /> Signal Connects to...<br /> * SWDIO Data I/O pin. Use 100K Ohm pull-up resistor to VCC.<br /> * SWO Optional trace output pin.<br /> * SWCLK Clock pin. Use 100K Ohm pull-down resistor to GND.<br /> * VCC Positive Supply Voltage — Power supply for JTAG interface drivers.<br /> * GND Digital ground.<br /> * nRESET nRESET pin — Connect this pin to the (active low) reset input of the target CPU. Use 100K Ohm pull-up resistor to VCC. This is an open-collector/open-drain output.<br /> <br /> == Reference ==<br /> * https://www.keil.com/support/man/docs/ulinkpro/ulinkpro_hw_if_jtag10.htm<br /> <br /> <br /> [[category: Debug Interface]]</div>

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