In previous postings, two different and contradictory answers where given for the question: What to do with the unused JTAG pins?
In one answer, it is recommended to add external pull-ups to the JTAG pins TMS, TCK, and TDI (as called for in the datasheet, under pins’ descriptions).
http://ez.analog.com/message/14442#14442
In the other posting, it is recommended to connect TMS, TCK, TDI directly to VDD, and leave the TDO pin open.
http://ez.analog.com/message/111250#111250
Can we please have a definitive answer?
A related question: In the thread “ADUC7061: PIN nTRST”
http://ez.analog.com/message/127829#127829
it is confirmed that the nTRST pin is in fact connected to P0.7 GPIO pin. After RESET it could possibly be used as I/O (of course, considering that it must have an external pull-up that will make its state high at the time of RESET, or some other circuit arrangement).
The question is: are any of the JTAG pins are likewise connected to GPIO port(s), and could possibly be used as I/O (or ONLY output pins, or ONLY input pins, correspondingly)?