The Atmel AVR XMEGA OCD is otherwise known as PDI (Program and Debug
Interface). Two physical interfaces (JTAG and PDI physical) provide access to the same
OCD implementation within the device. It supports the following features:
- Complete program flow control
- Full access to all registers and
memory areas
- One dedicated program address
comparator or symbolic breakpoint (reserved)
- Four hardware comparators
- Unlimited number of user program
breakpoints (using BREAK instruction)
- No limitation on system clock
frequency