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Functional Description
2
MPC Bus Address
8 0 8 0 1 2 3 4
0
15
16
31
Decode is
>=
and
<=
MSADDx Register
7 0 8 0 9 0 0 0
0
15
16
31
Figure 2-2. MPC to PCI Address Decoding
There are no limits imposed by Raven on how large of an address space a
map decoder can represent. There is a lower limit of a minimum of 64KB
due to the resolution of the address compare logic.
For each map, there is an associated set of attributes. These attributes are
used to enable read accesses, enable write accesses, enable write posting,
and define the PCI transfer characteristics.
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2-5
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