Programming interface for Segger w/ Segger JLink

[lifejustice]

Hello-

I am developing my first project with the nRF9160.  It is on a custom board.  I am planning on using Segger studio with the Segger JLink programmer with the 10-Pin connector.  Could I get a sanity check that the following is how I should set up the interface to the nRF9160?

1) Does nReset need a pull-up resistor?  (10K?)

2) Does SWO need a pull-up resistor?

3)  My nRF9160 VDD is 3.3V.  My VDD_GPIO is 1.8V.  Should I make PIn1 of the Segger Connector be 1.8V to match the GPIO, or 3.3V to match VDD?

Any advice would be appreciated!

[Jared]

Hi,

1. No. From the product specification: "nRESET pin has an always-on internal pull-up resistor connected to nRF9160 internal voltage typically of 2.2 V level. The value of the pull-up resistor is given in Pin reset"
2. SWO is not supported for the nRF9160.
3. Yes, the VDD on the 10 pin connector should be the same as the voltage for the GPIO interface i.e it should be VDD_GPIO. 

best regards

Jared