The JTAG-DP supplied with the DAP is an implementation of the JTAG-DP defined in ADIv5.1, which also contains a detailed explanation of its programmers model, capabilities and features.

JTAG-DP contains a debug port state machine (JTAG) that controls the JTAG-DP operation, including controlling the scan chain interface that provides the external physical interface to the JTAG-DP. It is based closely on the JTAG TAP State Machine, see IEEE Std 1149.1-2001.

This section contains the following: