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Download J-Link / J-Trace User Guide (UM08001)
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319 PIN SIGNAL 15 RESET 17 DBGRQ 19 5V-Supply TYPE Description Target CPU reset signal. Typically connected to the RESET pin of the target CPU, which is typically called "nRST", "nRESET" or "RESET". This pin is not connected in J-Link. It is reserved for compatibility with other equipment to be used as a debug NC request signal to the target system. Typically connected to DBGRQ if available, otherwise left open. This pin can be used to supply power to the target hardware. Older J-Links may not be able to supply power on this Output pin. For more information about how to enable/disable the power supply, please refer to Target power supply on page 320. I/O Table 11.1: J-Link / J-Trace pinout Pins 4, 6, 8, 10, 12, 14, 16, 18, 20 are GND pins connected to GND in J-Link. They should also be connected to GND in the target system. 11.1.1.1 Target board design We strongly advise following the recommendations given by the chip manufacturer. These recommendations are normally in line with the recommendations given in the table Pinout for JTAG on page 318. In case of doubt you should follow the recommendations given by the semiconductor manufacturer. You may take any female header following the specifications of DIN 41651. For example: Harting Molex Tyco Electronics J-Link / J-Trace (UM08001) part-no. 09185206803 part-no. 90635-1202 part-no. 2-215882-0 © 2004-2014 SEGGER Microcontroller GmbH & Co. KG
