SuperH (SH) 64-bit RISC Series SH-5 System Architecture, Volume ...

PRELIMINARY DATA
240 DBUS protocol
Purge - purge a physical address
Forces any data held by a module and associated with a physical address to be made
coherent with the actual data held at the physical address whilst removing any
copies of the data held in the target module.
Request
OPC[7:0]
ADDR[31:0]
SRC[7:0]
TID[7:0]
DUMMY[7:0]
DATA[63:0]
Response
R_OPC[7:0]
R_SRC[7:0]
R_TID[7:0]
Opcode Purge (0x8).
Address, where ADDR[31:24] identifies the module.
ADDR[23:3] specifies the offset within the module.
ADDR[2:0] is not significant.
Source identifier, defined by the system not the module.
Transaction identifier, defined by the module not the system.
Dummy bits.
Address to be purged.
Response type, either 0x80 for Success, or 0x81 for Failure.
Copy of SRC.
Copy of TID.
D R A FT
SuperH, Inc.
SH-5 System Architecture, Volume 3: Debug 05-SA-10003 v1.0