nRF52810 ic not recognized by segger J link

[redanb]

SWDIO,SWDCLK,VCC AND GND have been taken out from the nrf52810 ic and proper connections have been made to the jtag end of the j link device (connecting all grounds also) but the target is not recognized by the j link commander.Please guide how to program the nrf52810 ic using J link.

[awneil]

Show a full schematic of your system.

Is the target powered?

The J-Link doesn't provide power to the target.

[redanb]

Yes i supplied power 3.3v to the target ic separetely and made the grounds common too.I also connected 3.3v to the vref of the j link jtag. that is pin no.1.

                            20 PIN JTAG and their connections:

3.3------------->     pin1o o  2NOT USED

NOT USED---->       3o o4 GND

NOT USED              5 o o6GND

SWDIO-------->        7o o8GND

SWDCLK ---->         9 o o10GND

 NOT USED             11 o o12GND

 NOT USED             13 o o14GND

3.3 ------------->         15 o o16GND

 NOT USED             17  o o18GND

NOT USED              19  o o20GND

https://electronics.stackexchange.com/questions/358652/is-it-possible-to-have-5v-power-and-vtref-in-swd-programmer-for-arm