On the ARM7 based ADuC devices, debugging and downloading to Flash was via JTAG. On the ADuCRF101, JTAG is replaced with Serial Wire Debug.
What are the differences between Serial Wire Debug and JTAG ?
Do i need to get new tools, new emulator?
Serial Wire Debug (SWD) is an alternative to JTAG for debug. It was prefered to JTAG in the ADuCRF101 implementation because of its low pin requirement (2).
The tools currently used for the ARM7 based families also support serial wire debug, there is no need to purchase new emulator.
In terms of communication speed, SWD is as fast as JTAG. The speed limitation on products like ADuCRF101 comes from the on-chip Flash access time and not from the debug port.
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