Base address register (bar) settings, Base address register (bar) settings -6 – Altera Arria 10 Avalon-MM User Manual
Page 32

Parameter
Value
Description
Size of address pages
4 KByte–4GByte Sets the size of the PCI Express system pages. All pages
must be the same size. This parameter is only necessary
for 32-bit addresses.
Related Information
Base Address Register (BAR) Settings
You can configure up to six 32-bit BARs or three 64-bit BARs.
Table 3-3: BAR Registers
Parameter
Value
Description
Type
Disabled
64-bit prefetchable memory
32-bit non-prefetchable memory
32-bit prefetchable memory
I/O address space
Defining memory as prefetchable allows data in the
region to be fetched ahead anticipating that the
requestor may require more data from the same
region than was originally requested. If you specify
that a memory is prefetchable, it must have the
following 2 attributes:
• Reads do not have side effects
• Write merging is allowed
The 32-bit prefetchable memory and I/O address
space BARs are only available for the Legacy
Endpoint.
Size
Not configurable
Specifies the memory size calculated from other
parameters you enter.
3-6
Base Address Register (BAR) Settings
UG-01145_avmm
2015.05.14
Altera Corporation
Parameter Settings