In the past I've used 20 and 14 pin JTAG but would like to reduce it to 10 to save board space (without going Tag-Connect) and fall in line with current recommendations.
This is for an LPC4078. Three options I can think of:
* Leave it floating
* Ground it
* Connect it to P2.10, the ISP enable pin (which currently has a weak 100k pullup on my board since I don't ever use the boot ROM).
I have a vague suspicion it's really intended for the third option... but if NOT and I connect it there it could make the board get stuck in the ISP on boot.
I can't seem to find ANY documentation discussing this...
Will OpenOCD ever use it?
Is it electrically connected when adapted to a 20 pin programmer like the Flyswatter 2?