Specifications

17 January 1997 – Subject to Change
System Address Mapping A–27
21164 Address Space
Figure A–13 Byte/Word PCI Space
Each of these regions operates identically as follows:
•
Byte and word instructions issue a single byte/word read or write PCI
transaction.
•
Longword instructions issue a single longword read transaction, and up to eight
longword write transactions.
•
Quadword instructions issue up to four quadword read or write transactions.
39 38 37 36 35 34 33 32 31 012
39 38 37 36 35 34 33 32 31 0
PCI Memory Space - 4GB
PCI I/O Space - 4GB
39
39
38
38
37
37
36
36
35
35
34
34
33
33
32
32
31
31
0
0
1
1
2
2
PCI Type 0 Configuration Space - 4GB
PCI Type 1 Configuration Space - 4GB
MK1455-24
1 00Size 01000 PCI Memory Address <31:2>
1 Size 01001 PCI I/O Address
1 00Size 01010 PCI Configuration Address <31:2>
1 10Size 01011 PCI Configuration Address <31:2>