I am trying to add device support for the uc3c164 AT32 part. There is already an entry for a AT32 part, the uc3a0512. Copying the definition and changing the signature etc has not worked (avrdude fails with sign-on command failed, no answer). After investigating the JTAG signals i discovered that the reset line is deasserted at the same time the TCK line is set high. The datasheet states that
The JTAG is enabled if TCK is low while the RESET_N pin is released.
From this I deduce that there is a wrong JTAG command sent or somewhat.
Programming through Atmel Studio works great.
Do you have a starting point for me?