Motorola MPC533 Reference Manual page 356

Bus Operations
9-40
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Table 9-7. Address Type Pins
Pin
STS 0 Special transfer
1 Normal transfer
TS 0 Start of transfer
1 No transfer
AT[0] Must equal zero on MPC533
AT[1] 0 Supervisor mode
1 User mode
AT[2] 0 Instruction
1 Data
AT[3] Reservation/Program Trace
PTR 0 Program trace
1 No program trace
RSV 0 Reservation data
1 No reservation
MPC533 Reference Manual
Function
MOTOROLA