IBM 750GL, 750GX manual 14

User’s Manual
IBM PowerPC 750GX and 750GL RISC Microprocessor
Figure 8-5.	First Level Address Pipelining ..............................................................................................	287
Figure 8-6.	Address-Bus Arbitration ........................................................................................................	290
Figure 8-7.	Address-Bus Arbitration Showing Bus Parking ....................................................................	291
Figure 8-8.	Address-Bus Transfer ...........................................................................................................	293
Figure 8-9.	Snooped Address Cycle with ARTRY ..................................................................................	301
Figure 8-10.	Data-Bus Arbitration .............................................................................................................	302
Figure 8-11.	Normal Single-Beat Read Termination .................................................................................	304
Figure 8-12.	Normal Single-Beat Write Termination .................................................................................	305
Figure 8-13.	Normal Burst Transaction .....................................................................................................	305
Figure 8-14.	Termination with DRTRY ......................................................................................................	306
Figure 8-15.	Read Burst with TA Wait States and DRTRY .......................................................................	307
Figure 8-16.	MEI Cache-CoherencyProtocol—State Diagram (WIM = 001) ...........................................	309
Figure 8-17.	Fastest Single-Beat Reads ...................................................................................................	310
Figure 8-18.	Fastest Single-Beat Writes ...................................................................................................	311
Figure 8-19.	Single-Beat Reads Showing Data-Delay Controls ...............................................................	312
Figure 8-20.	Single-Beat Writes Showing Data-Delay Controls ................................................................	313
Figure 8-21.	Burst Transfers with Data-Delay Controls ............................................................................	314
Figure 8-22.	Use of Transfer Error Acknowledge (TEA) ...........................................................................	315
Figure 8-23.	32-BitData-Bus Transfer (8-Beat Burst) ..............................................................................	317
Figure 8-24.	32-BitData-Bus Transfer (2-Beat Burst with DRTRY) ..........................................................	317
Figure 8-25.	IEEE 1149.1a-1993 Compliant Boundary-Scan Interface ....................................................	320
Figure 8-26.	Data-BusWrite-Only Transaction .........................................................................................	320
Figure 9-1.	L2 Cache ..............................................................................................................................	327
Figure 10-1.	750GX Power States ............................................................................................................	336
Figure 10-2.	Dual PLL Block Diagram ......................................................................................................	342
Figure 10-3.	Dual PLL Switching Example, 3X to 4X ................................................................................	343
Figure 10-4.	Thermal Assist Unit Block Diagram ......................................................................................	344
Figure 10-5.	Instruction Cache Throttling Control SPR Diagram ..............................................................	347
Figure 11-1.	750GX IEEE 1149.1a-1993/COP Organization ....................................................................	358
Figure 11-2.	Reset Sequence ...................................................................................................................	360

List of Figures	750gx_umLOF.fm.(1.2)
Page 14 of 377	March 27, 2006