Altera cyclone V Technical Reference page 455

cv_5v4
2016.10.28
(6)
The following peripherals can master the interconnect:
• Ethernet MACs
• USB-2 OTG controllers
• NAND controllers
• ETR
• SD/MMC controller
For the MPU master, either the boot ROM or on-chip RAM maps to address 0x0 and obscures the lowest
64 KB of SDRAM.
At boot time, the MPU does not have access to the SDRAM address space from 0x00010000 to
0x00100000. This is because the MPU's SDRAM access is controlled by the MPU L2 filter registers, which
only have a granularity of 1 MB. After booting completes, the MPU can change address filtering to use the
lowest 1 MB of SDRAM.
For non-MPU masters, either the on-chip RAM or the SDRAM maps to address 0x0. When mapped to
address 0x0, the on-chip RAM obscures the lowest 64 KB of SDRAM for non-MPU masters.
Related Information
remap
• on page 7-32
Description of the
Cortex-A9 MPU Subsystem Register Implementation
•
More information about MPU register implementation, including the SCU and L2 cache registers
The SDRAM Region
•
More information about using L2 address filtering to control SDRAM access
Address Remapping
•
Information about controlling the system interconnect memory maps
L3 Address Space
The L3 address space is 4 GB and applies to all L3 masters except the MPU subsystem.
The L3 address space configurations contain the regions shown in the following table:
Table 7-1: L3 Address Space Regions
Description
SDRAM window
(without on-chip RAM)
On-chip RAM
SDRAM window (with
on-chip RAM)
ACP window
HPS-to-FPGA
(14) For details about the
System Interconnect
Send Feedback
register
remap
on page 9-11
on page 7-11
Condition
When
remap.nonmpuzero
is clear
When
remap.nonmpuzero
is set
When
remap.nonmpuzero
is set
Always visible
When
remap.hps2fpga
set. Not visible to FPGA-to-
HPS bridge.
register, refer to "Bit Fields for Modifying the Memory Map"
remap
on page 9-70
Base Address End Address
(14) 0x00000000 0xBFFFFFFF 3 GB
0x00000000 0x0000FFFF
(14)
(14) 0x00010000 0xBFFFFFFF 3145664 KB
0x80000000 0xBFFFFFFF 1 GB
is 0xC0000000 0xFBFFFFFF 960 MB
(14)
7-7
L3 Address Space
Size
64 KB
= 3 GB - 64 KB
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