SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
The APACC instruction connects the associated APACC Data Register chain between TDI and TDO. This instruction provides read and write access to the APACC Register of the Arm DAP. Shifting the proper data into this register and reading the data output from this register allows read and write access to internal components and buses through the Debug Port. See Section 3.5.2.4 for more information.