Provisional ID

Each I3C device connected to the I3C bus must be uniquely identifiable to receive a Dynamic Address. For this purpose, the Target module contains a 48-bit Provisional ID available via I3CxPID0 through I3CxPID5 registers. The Controller uses this 48-bit Provisional ID to assign a Dynamic Address to the device. The Controller can also request for this data using the GETPID Common Command Code (CCC).

The Provisional ID is composed of three parts:

The MIPI Manufacturer ID is a two-byte Hexadecimal ID that is assigned by MIPI Alliance, Inc. and is available on the “MIPI Alliance Manufacturer ID Page” at https://mid.mipi.org/. Only the 15 Least Significant bits are used in PID[47:33]. The most significant bit is discarded.

The Provisional ID Type Selector (PID[32]) determines whether PID[31:0] is a Vendor Fixed Value or a Random Value.

If PID[32] = 1, PID[31:0] is a 32-bit value randomly generated by the user software.

If PID[32] = 0, PID[31:0] is a 32-bit Vendor Fixed Value composed of three parts: