8 DSU.DID vs SW-DP ID
The SW-DP ID is a 32-bit ID comprised of an 11-bit JEDEC Manufacturer’s ID Code (assigned to Microchip), the 20-bit Device ID and a fixed LSB of 1. The SW-DP ID can be read through the SWD interface using the ARM IDCODE command. The device ID to be used by the external debugger or programmers must be within the DSU [DSU.DID register] located at address 0x4100_00118 (external address). Only the lower 16 bits of this register are used for the purpose of external tools to identify the device; the upper 16 bits must be masked off on read.
Many of the fields in the SW-DP ID and the DSU.DID register are the same but positioned differently.
Refer to the following figure for how the SW-DP ID and DSU.DID are correlated, and refer to the PIC32CX-BZ3/PIC32CX-BZ36 and WBZ35x Module Family Data Sheet (DS70005541) for the specific variant part number values.
