89HPEB383 Datasheet, PDF (54/264 Pages) Integrated Device Technology – Topics discussed include the following

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4. Addressing > Non-transparent Addressing
Figure 13: Memory Window Remapping Example
PCIe Address Space
C_FFFF_FFFF
NTMA Window
C_C000_0000
PCI Address Space
Prefetchable Window
1_FFFF_FFFF
C000_0000
A_FFFF_FFFF
9_C00_0000
BFFF_FFFF
8000_0000
Prefetchable Window
Non-prefetchable Window
7FFF_FFFF
NTMA Window
Non-prefetchable Window
4000_0000
3FFF_FFFF
0000_0000
I/O Address Remapping
The “PCI I/O Address Upper 16 Register” in the PEB383 configuration space indicates the number of
upper bits of the I/O address that are not used when forwarding downstream I/O space cycles to the PCI
bus. This allows I/O addresses to be translated down into the address range that is available on the PCI
bus. There is no enable bit for I/O address remapping; any non-zero value in this register remaps the
I/O transactions to a different address location, as described in this section.
PEB383 User Manual
July 25, 2011
Integrated Device Technology, Inc.
Confidential - NDA Required