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Intel
®
82845 MCH for SDR Datasheet 7
Figures
Figure 1. Intel
®
MCH Simplified Block Diagram.................................................................20
Figure 2. PAM Register Attributes .....................................................................................60
Figure 3. Addressable Memory Space ..............................................................................97
Figure 4. DOS Compatible Area Address Map..................................................................98
Figure 5. Extended Memory Range Address Map ............................................................98
Figure 6. Intel
®
82845 MCH Ballout Diagram (Top View—Left Side)..............................126
Figure 7. Intel
®
82845 MCH Ballout Diagram (Top View—Right Side)............................127
Figure 8. Intel
®
MCH FC-BGA Package Dimensions (Top and Side View).....................134
Figure 9. Intel
®
MCH FC-BGA Package Dimensions (Bottom View)...............................135
Figure 10. XOR Tree Chain.............................................................................................137
Tables
Table 1. General Terminology...........................................................................................11
Table 2. Data Type Notation..............................................................................................12
Table 3. Number Format Notation.....................................................................................12
Table 4. Memory Capacity.................................................................................................16
Table 5. Intel
®
MCH Clock Ratio Table .............................................................................17
Table 6. Intel
®
MCH Internal Device Assignments ............................................................32
Table 7. Memory-mapped Register Address Map.............................................................36
Table 8. Intel
®
MCH Configuration Space (Device 0)........................................................43
Table 9. PAM Register Attributes ......................................................................................61
Table 10. Intel
®
MCH Configuration Space (Device 1)......................................................80
Table 11. SMM Space Address Ranges .........................................................................104
Table 12. Supported DIMM Configurations .....................................................................109
Table 13. Data Bytes on DIMM Used for Programming DRAM Registers ......................110
Table 14. Address Translation and Decoding .................................................................111
Table 15. AGP Commands Supported by the Intel
®
MCH When Acting as
an AGP Target .................................................................................................113
Table 16. Data Rate Control Bits.....................................................................................115
Table 17. PCI Commands Supported by the Intel
®
MCH (When Acting
as a FRAME# Target) ......................................................................................115
Table 18. Absolute Maximum Ratings.............................................................................119
Table 19. Power Characteristics......................................................................................119
Table 20. Signal Groups..................................................................................................120
Table 21. DC Characteristics...........................................................................................122
Table 22. Intel
®
82845 MCH Ballout Listed Alphabetically by Signal Name ....................128
Table 23. XOR Chain 0 ...................................................................................................138
Table 24. XOR Chain 1 ...................................................................................................140
Table 25. XOR Chain 2 ...................................................................................................141
Table 26. XOR Chain 3 ...................................................................................................142
Table 27. XOR Chain 4 ...................................................................................................143
Table 28. XOR Chain 5 ...................................................................................................144
Table 29. XOR Chain 6 ...................................................................................................146
Table 30. XOR Chain 7 ...................................................................................................147