TRACEID | 31:0 | rwNormal read/write | 0x0 | Trace ID field. Sets the trace ID value for instruction trace.Bit[0] must be zero if data trace is enabled. If data trace is enabled then a trace unit sets the trace ID for data trace, to TRACEID+1.Bits [31:N] are RAZ/WI, where N is the value of IDR5.TRACEIDSIZE.If an implementation supports the CoreSight AMBA Trace Bus (ATB) then:The width of the field is 7 bits.Writing a reserved trace ID value causes UNPREDICTABLE behavior. See the AMBA 3 ATB Protocol Specification for information about which ATID bus values are reserved. |