Content originally posted in LPCWare by embd02161991 on Thu Apr 30 16:27:56 MST 2015
Hi,
In LPC43xx devices, when the DBGEN pin is HIGH, the ARM debug mode is entered. This is required for debugging using JTAG.
When the DBGEN pin is LOW, JTAG BSDL is entered.
Thanks
NXP Technical Support